Top 6 Quantum Mechanics Popular Science Books in India (2023), Check Out the List

 Are you looking for popular science books on Quantum Mechanics to be delivered to your doorstep?

If yes, then explore this article where we share some of the most acclaimed books in the world of Quantum Mechanics. So, if you are interested in studying the fundamental theory in physics that describes the behaviour of particles at the smallest scales, such as atoms, molecules, and subatomic particles, then we would suggest you start reading these books.

"Quantum Mechanics: Concepts and Applications" by Nouredine Zettili is a comprehensive and well-regarded textbook that offers a thorough exploration of quantum mechanics. Zettili presents the fundamental principles and mathematical framework of the subject in a clear and concise manner. With numerous examples, illustrations, and exercises, the book aids in understanding the core concepts and their practical applications. It covers a wide range of topics, including wave-particle duality, quantum ..

"Quantum Mechanics and Path Integrals" by Richard P. Feynman and Albert R. Hibbs is a seminal work that provides a unique and insightful perspective on quantum mechanics. The book explores the concept of path integrals, a powerful mathematical tool for understanding quantum phenomena. Feynman's exceptional ability to convey complex concepts in a clear and engaging manner shines through, making this book accessible to both beginners and advanced readers. It offers a deep exploration of quantum th ..

"Quantum: A Guide for the Perplexed" by Jim Al-Khalili is a captivating and accessible book that unravels the mysteries of quantum physics. Al-Khalili skillfully navigates complex concepts, making them understandable for readers with little to no background in the subject. He explores the historical development of quantum theory, its counterintuitive principles, and its practical applications. With engaging explanations and real-world examples, Al-Khalili takes readers on a journey through the q ..

"The Fabric of the Cosmos: Space, Time, and the Texture of Reality" by Brian Greene is a mind-expanding exploration of the fundamental nature of the universe. Greene takes readers on an exhilarating journey through cutting-edge discoveries and mind-boggling concepts in modern physics. From the nature of space and time to the mind-bending theories of quantum mechanics and general relativity, Greene presents complex ideas in a clear and engaging manner. With vivid storytelling and thought-provokin ..




International Conference On Mechanics of Functional Materials and Structures

Website Link: https://mechanics-conferences.sciencefather.com/

Member Nomination: https://x-i.me/soumemb

Award Nomination: https://x-i.me/mecnom


Facebook : https://www.facebook.com/people/Julie... Twitter : https://twitter.com/anastas75466916 Blogger : https://anastasiadavis147.blogspot.com/ Tumblr : https://www.tumblr.com/blog/anastasia147 Pinterest: https://in.pinterest.com/mechanicscon... Reedit: https://www.reddit.com/submit
#AviationFuture #AeroInnovators #AircraftMaintenance #MechanicalMastery #EngineeringSolutions #AeroTechAdvancements #TechInAviation #FutureOfFlight #MechanicLife #StructuralSolutions#StructuralMechanicsInnovator #InnovativeStructuresAward #StructuralEngineeringExcellence
# Mechanics # Sciencefather # Shorts # Technology # Conference #Awards #Research #Engineering #Tools # Metals #Torque.

The marvellous mechanics of flying

Watch a heron coming into land on a water body, or a formation of geese descending smoothly in a mass landing, or for that matter, a black kite riding the skies with consummate ease and you cannot help but feel a pang of envy.
                                  

 If only… As for insects, most of them fly too fast for us to notice exactly what’s happening, their gossamer wings are simply a blur though one does wonder how butterflies, with their erratic twists and turns manage pinpoint landings on the blossom they have chosen. Bats too, the only mammals that can truly fly, astound us flickering hither and thither, or flying by with the dignity of birds, using ‘wings’ that look like thin skeins of leather attached to them.

Well, we’ve looked at birds and insects very hard, and have borrowed their technology for our own flying machines

International Conference On Mechanics of Functional Materials and Structures

Website Link: https://mechanics-conferences.sciencefather.com/

Member Nomination: https://x-i.me/soumemb

Award Nomination: https://x-i.me/mecnom


Facebook : https://www.facebook.com/people/Julie... Twitter : https://twitter.com/anastas75466916 Blogger : https://anastasiadavis147.blogspot.com/ Tumblr : https://www.tumblr.com/blog/anastasia147 Pinterest: https://in.pinterest.com/mechanicscon... Reedit: https://www.reddit.com/submit
#AviationFuture #AeroInnovators #AircraftMaintenance #MechanicalMastery #EngineeringSolutions #AeroTechAdvancements #TechInAviation #FutureOfFlight #MechanicLife #StructuralSolutions#StructuralMechanicsInnovator #InnovativeStructuresAward #StructuralEngineeringExcellence
# Mechanics # Sciencefather # Shorts # Technology # Conference #Awards #Research #Engineering #Tools # Metals #Torque.

WestJet flight cancellations halted as mechanics, airline return to bargaining

The airline announced late Wednesday that the Aircraft Mechanics Fraternal Association had rescinded its strike notice, as both parties had "mutually agreed to return to the bargaining table," and that there was no need to cancel additional flights.

WestJet and its aircraft mechanics have agreed to continue bargaining, halting flight cancellations that had been underway.

The airline announced late Wednesday that the Aircraft Mechanics Fraternal Association had rescinded its strike notice, as both parties had “mutually agreed to return to the bargaining table,” and that there was no need to cancel additional flights.

Earlier Wednesday, WestJet president Diederik Pen had said the company was waiting to hear from the Canadian Industrial Relations Board on whether it would direct the airline and the union representing aircraft maintenance engineers and technical operations workers to arbitration to come up with a collective agreement.


The company had cancelled 40 flights affecting 6,500 customers so that planes wouldn’t be stranded if the 670 AMFA members made good on their threat to strike Thursday evening.


The latest development comes following months of negotiation.


Pen had said their latest offer would make the aircraft maintenance engineers the highest paid in Canada, with a take-home pay increase of between 30 and 40 per cent in the first year of the proposed agreement.


The union said Monday it opposes WestJet’s request for arbitration because the process could undermine aircraft maintenance engineers’ bid for greater contract gains.


“If adopted by the Canada Industrial Relations Board, it would utterly frustrate the AMEs’ goal of reaching an industry-changing contract because arbitrators are generally driven by industry ‘norms’ — the same norms that have kept AMEs under the heel of management and industrial unions which favour the unskilled majority,” the negotiating committee claimed in a statement Monday.0

International Conference On Mechanics of Functional Materials and Structures

Website Link: https://mechanics-conferences.sciencefather.com/

Member Nomination: https://x-i.me/soumemb

Award Nomination: https://x-i.me/mecnom


Facebook : https://www.facebook.com/people/Julie... Twitter : https://twitter.com/anastas75466916 Blogger : https://anastasiadavis147.blogspot.com/ Tumblr : https://www.tumblr.com/blog/anastasia147 Pinterest: https://in.pinterest.com/mechanicscon... Reedit: https://www.reddit.com/submit
#AviationFuture #AeroInnovators #AircraftMaintenance #MechanicalMastery #EngineeringSolutions #AeroTechAdvancements #TechInAviation #FutureOfFlight #MechanicLife #StructuralSolutions#StructuralMechanicsInnovator #InnovativeStructuresAward #StructuralEngineeringExcellence
# Mechanics # Sciencefather # Shorts # Technology # Conference #Awards #Research #Engineering #Tools # Metals #Torque.

Diving Deep Into Quantum Computing: Computing With Quantum Mechanics

Quantum mechanics enables us to build computers that are, in some ways, much more powerful than classical computers. Small, gated quantum computers and experimental quantum computers already exist, but the world might soon see the arrival of quantum computers capable of demonstrating quantum advantage over their classical counterparts. When that happens, it will leave little time for the lengthy process of migrating to new cryptographic algorithms, so it’s best to plan ahead and consider post-quantum cryptography now.

In this entry, the second on post-quantum cryptography, we delve into the history of quantum computing, its foundation in quantum mechanics, and the kind of complex problems quantum computers will be able to solve.

Brief history of computing

To better comprehend quantum mechanics, it helps to understand how mathematics evolved over time, and with it, our understanding of nature.

Early in history, people’s mathematical understanding of the world was simpler than now: at first, only natural numbers (1, 2, 3, 4, 5, etc.) were used to count. Later, negative numbers (…, -3, -2, -1, 0, 1, 2, 3, ….) were incorporated as well. Eventually, multiplication and division were needed, and these required the concept of fractions created from positive integers. These were classified as rational numbers.

Rational numbers serve well in many practical applications of physics or classical mechanics, where the goal is to measure or approximate something to a sufficient degree of accuracy. However, when the ancient Egyptians wanted to calculate the area of a circle, they tried using fractions in their formula, but the results were not quite accurate. Further examination revealed that a certain number, which will eventually be called pi (symbolized by π and has the value of 3.14159…), can instead be used for this operation. This sparked the idea that there are numbers that cannot be represented by fractions. We call such as real numbers because there’s a tacit assumption that they describe how nature works. So, for a long time, people believed that the world exists on a continuum of scales.

However, the advent of nuclear physics in the late 19th and early 20th centuries started to challenge this view. The smallest unit of matter was initially thought to be the atom, thus it was so named — the ancient Greek “atomos” translates to “indivisible,” or more literally “uncuttable.” In the late 19th century, however, Sir Joseph John Thompson discovered a sub-atomic particle, the electron, and proposed the ‘plum pudding’ model of an atom. In the early 20th century, Ernest Rutherford first theorized the existence of protons and neutrons in an atom’s nucleus, a fact then proven by James Chadwick. Rutherford proposed a model of the atom where the electrons orbited the nucleus like planets around the sun.


International Conference On Mechanics of Functional Materials and Structures

Website Link: https://mechanics-conferences.sciencefather.com/

Member Nomination: https://x-i.me/soumemb

Award Nomination: https://x-i.me/mecnom


Facebook : https://www.facebook.com/people/Julie... Twitter : https://twitter.com/anastas75466916 Blogger : https://anastasiadavis147.blogspot.com/ Tumblr : https://www.tumblr.com/blog/anastasia147 Pinterest: https://in.pinterest.com/mechanicscon... Reedit: https://www.reddit.com/submit
#AviationFuture #AeroInnovators #AircraftMaintenance #MechanicalMastery #EngineeringSolutions #AeroTechAdvancements #TechInAviation #FutureOfFlight #MechanicLife #StructuralSolutions#StructuralMechanicsInnovator #InnovativeStructuresAward #StructuralEngineeringExcellence
# Mechanics # Sciencefather # Shorts # Technology # Conference #Awards #Research #Engineering #Tools # Metals #Torque.

Quantum Light Droplets Unveil New Realms of Macroscopic Complexity

Subwavelength grated waveguide supporting polariton droplets (visualization: Antonio Gianfrate, Credit: CNR Nanotec, edited

Scientists have advanced the field by stabilizing exciton-polaritons in semiconductor photonic gratings, achieving long-lived and optically configurable quantum fluids suitable for complex system simulations.

Researchers from CNR Nanotec in Lecce and the Faculty of Physics at the University of Warsaw used a new generation of semiconductor photonic gratings to optically tailor complexes of quantum droplets of light that became bound together into macroscopic coherent states. The research underpins a new method to simulate and explore interactions between artificial atoms in a highly reconfigurable manner, using optics. The results have been published in the prestigious journal Nature Physics.
Quantum Simulation Technologies

Condensed matter systems and photonic technologies are regularly used by researchers to create microscale platforms that can simulate the complex dynamics of many interacting quantum particles in a more accessible setting. Some examples include ultracold atomic ensembles in optical lattices, superconducting arrays, and photonic crystals and waveguides. In 2006 a new platform emerged with the demonstration of macroscopically coherent quantum fluids of exciton-polaritons to explore many-body quantum phenomena through optical techniques.

Exciton-Polaritons and Quantum Fluids

When a piece semiconductor is placed between two mirrors – an optical microresonator – the electronic excitations within can become strongly influenced by photons trapped between the mirrors. The resulting new bosonic quantum particles, known as exciton-polaritons (or polaritons for short), can under the right circumstances undergo a phase transition into a nonequilibrium Bose-Einstein condensate and form a macroscopic quantum fluid or a droplet of light. Quantum fluids of polaritons have many salient properties, one being that they are optically configurable and readable, permitting easy measurements of the polariton dynamics. This is what makes them so advantageous to simulate many-body physics.
Stability and Pumping Challenges

Polariton condensates must be continuously optically pumped with external lasers to replenish particles, otherwise the condensate dissipates within picoseconds. However, the harder you pump the condensate the more energetic it becomes due to repulsive interparticle forces, leading to particles escaping the condensate and subsequent decay of spatial correlations. This is a fundamental problem for optically programmable polariton simulators. Scientists needed to come up with a way to make the condensate more stable and long lived, while still being optically pumped.

Advances in Polariton Stability

Scientists from CNR Nanotec in Lecce and the Faculty of Physics at the University of Warsaw, achieved this goal using a new generation of semiconductor photonic gratings. In their paper titled “Reconfigurable quantum fluid molecules of bound states in the continuum,” published in Nature Physics, they used subwavelength properties of the photonic grating to imbue polaritons with new properties. First, the polaritons could be driven to condense into an ultralong lifetime state known as bound state in the continuum (BIC). The fascinating thing about BICs is that they are mostly non-radiative due to symmetry enforced protection from the outside continuum of photonic modes. Second, the polaritons obtained a negative effective mass due to the dispersion relation coming from the grating. This meant that the pumped polaritons could not escape so easily through normal decay channels anymore. Now, the researchers possessed polariton fluids that were both extremely long lived and safely confined using only optical techniques.

Combined, these mechanisms allowed Antonio Gianfrate and Danielle Sanvitto at CNR Nanotec in Lecce to optically pump multiple polariton droplets that could interact and hybridize into macroscopic complexes. They could tailor and reversibly configure molecular arrangements and chains using this new form of artificial atoms: condensates of negative-mass BIC polaritons. The BIC property provided polaritons with much longer lifetimes whereas the negative mass property caused them to become optically trapped. The findings were supported by a BIC Dirac-polariton theory developed between Helgi Sigurdsson (University of Warsaw), Hai Chau Nguyen (University of Siegen, Germany), and Hai Son Nguyen (Univ Lyon, France).

The ultimate advantage of the platform is that the artificial quantum complexes can be all-optically programmed yet they retain very high lifetimes because of their protection from the continuum. This could lead to a new venture into optically programmable large-scale quantum fluids defined by unprecedented coherence scales and stability for structured nonlinear lasing and polariton-based simulation of complex systems.

“There are still several interesting ways to explore in this artificial polaritonic Dirac system. As an example, the coupling mechanism between polariton droplets along and perpendicular to the grating direction is very different. Along the waveguide, polaritons are effectively negative mass particles strongly bound to their pump spot. Perpendicular to the waveguide they move as positive mass particles undergoing ballistic transport. The mixture of these two mechanisms opens a new window to look at emergent behaviours of synchrony and pattern formation in structured polariton quantum fluids” concludes Helgi Sigurðsson from the Faculty of Physics, University of Warsaw.

Reference: “Reconfigurable quantum fluid molecules of bound states in the continuum” by Antonio Gianfrate, Helgi Sigurðsson, Vincenzo Ardizzone, Hai Chau Nguyen, Fabrizio Riminucci, Maria Efthymiou-Tsironi, Kirk W.

International Conference On Mechanics of Functional Materials and Structures

Website Link: https://mechanics-conferences.sciencefather.com/

Member Nomination: https://x-i.me/soumemb

Award Nomination: https://x-i.me/mecnom


Facebook : https://www.facebook.com/people/Julie... Twitter : https://twitter.com/anastas75466916 Blogger : https://anastasiadavis147.blogspot.com/ Tumblr : https://www.tumblr.com/blog/anastasia147 Pinterest: https://in.pinterest.com/mechanicscon... Reedit: https://www.reddit.com/submit
#AviationFuture #AeroInnovators #AircraftMaintenance #MechanicalMastery #EngineeringSolutions #AeroTechAdvancements #TechInAviation #FutureOfFlight #MechanicLife #StructuralSolutions#StructuralMechanicsInnovator #InnovativeStructuresAward #StructuralEngineeringExcellence
# Mechanics # Sciencefather # Shorts # Technology # Conference #Awards #Research #Engineering #Tools # Metals #Torque.

 

New Invention Triggers One of Quantum Mechanics’ Strangest and Most Useful Phenomena

In this artist’s rendering of a metasurface, light passes through tiny, rectangular structures — the building blocks of the metasurface — and creates pairs of entangled photons at different wavelengths. The device was designed, fabricated, and tested through a partnership between Sandia National Laboratories and the Max Planck Institute for the Science of Light. Credit: Courtesy of Igal Brener, Sandia National Laboratories

Through the Quantum Looking Glass

By helping scientists control a strange but useful phenomenon of quantum mechanics, an ultrathin invention could make future computing, sensing, and encryption technologies remarkably smaller and more powerful. The device is described in new research that was recently published in the journal Science.

This device could replace a roomful of equipment to link photons in a bizarre quantum effect called entanglement, according to scientists at Sandia National Laboratories and the Max Planck Institute for the Science of Light. It is a kind of nano-engineered material called a metasurface and paves the way for entangling photons in complex ways that have not been possible with compact technologies.

When photons are said to be entangled, it means they are linked in such a way that actions on one affect the other, no matter where or how far apart the photons are in the universe. It is a spooky effect of quantum mechanics, the laws of physics that govern particles and other very tiny things.


Green laser light illuminates a metasurface that is a hundred times thinner than paper, which was fabricated at the Center for Integrated Nanotechnologies. CINT is jointly operated by Sandia and Los Alamos national laboratories for the Department of Energy Office of Science. Credit: Craig Fritz, Sandia National Laboratories


Although the phenomenon might seem bizarre, researchers have harnessed it to process information in new ways. For example, entanglement helps protect delicate quantum information and correct errors in quantum computing, a field that may someday have sweeping impacts on science, finance, and national security. Entanglement is also enabling advanced new encryption methods for secure communication.

Research for the groundbreaking device, which is a hundred times thinner than a sheet of paper, was conducted, in part, at the Center for Integrated Nanotechnologies, a Department of Energy Office of Science user facility operated by Sandia and Los Alamos national laboratories. Sandia’s team received funding from the Office of Science, Basic Energy Sciences program.
Light goes in, entangled photons come out

The new metasurface acts as a portal to this unusual quantum phenomenon. In some ways, it’s like the mirror in Lewis Carroll’s “Through the Looking-Glass,” through which the young protagonist Alice experiences a strange, new world.

Instead of walking through their new device, scientists shine a laser through it. The beam of light passes through an ultrathin sample of glass covered in nanoscale structures made of a common semiconductor material called gallium arsenide.

“It scrambles all the optical fields,” said Sandia senior scientist Igal Brener. He is an expert in a field called nonlinear optics and led the Sandia team. Occasionally, he said, a pair of entangled photons at different wavelengths emerge from the sample in the same direction as the incoming laser beam.



“You now can replace lenses and thick optical elements with metasurfaces,” Brener said. “Those types of metasurfaces will revolutionize consumer products.”

Sandia is one of the leading institutions in the world performing research in metasurfaces and metamaterials. Between its Microsystems Engineering, Science and Applications complex, which manufactures compound semiconductors, and the nearby Center for Integrated Nanotechnologies, scientists have access to all the specialized tools they need to design, fabricate, and analyze these ambitious new materials.

“The work was challenging as it required precise nanofabrication technology to obtain the sharp, narrowband optical resonances that seed the quantum process of the work,” said Sylvain Gennaro, a former postdoctoral researcher at Sandia who worked on several aspects of the project.

The device was designed, fabricated, and tested through a partnership between Sandia and a research group led by physicist Maria Chekhova. She is an expert in the quantum entanglement of photons at the Max Planck Institute for the Science of Light.

“Metasurfaces are leading to a paradigm shift in quantum optics, combining ultrasmall sources of quantum light with far-reaching possibilities for quantum state engineering,” said Tomás Santiago-Cruz. He is a member of the Max Plank team and first author on the paper.

Brener, who has studied metamaterials for more than a decade, said this newest research could possibly spark a second revolution — one that sees these materials developed not just as a new kind of lens, but as a technology for quantum information processing and other new applications.

“There was one wave with metasurfaces that is already well established and on its way. Maybe there is a second wave of innovative applications coming,” he said.

International Conference On Mechanics of Functional Materials and Structures

Website Link: https://mechanics-conferences.sciencefather.com/

Member Nomination: https://x-i.me/soumemb

Award Nomination: https://x-i.me/mecnom


Facebook : https://www.facebook.com/people/Julie... Twitter : https://twitter.com/anastas75466916 Blogger : https://anastasiadavis147.blogspot.com/ Tumblr : https://www.tumblr.com/blog/anastasia147 Pinterest: https://in.pinterest.com/mechanicscon... Reedit: https://www.reddit.com/submit
#AviationFuture #AeroInnovators #AircraftMaintenance #MechanicalMastery #EngineeringSolutions #AeroTechAdvancements #TechInAviation #FutureOfFlight #MechanicLife #StructuralSolutions#StructuralMechanicsInnovator #InnovativeStructuresAward #StructuralEngineeringExcellence
# Mechanics # Sciencefather # Shorts # Technology # Conference #Awards #Research #Engineering #Tools # Metals #Torque.

James Keck, professor emeritus of mechanical engineering, dies at 86

James C. Keck, a professor emeritus in the Department of Mechanical Engineering who began working at MIT in the mid-1960s, died on Aug. 9. He was 86.

Keck joined MIT in 1965 as the Ford Professor of Engineering and developed teaching and research programs in thermodynamics, kinetics and mechanics related to energy generation and air pollution. Keck was the author of dozens of papers, and his research at MIT focused on atomic and molecular kinetics, thermodynamics and high-temperature gas dynamics. He was recognized by the National Academy of Engineering for “developing innovative, widely used concepts for modeling coupled chemical and physical phenomena in engine combustion and high-temperature flow.”

“Few of Professor Keck’s students and colleagues will ever forget seeing him walking around MIT with a sharp pencil and a pad of paper filled with equations and diagrams, ready to engage us in deep technical conversations filled with sharp intuition and insight few others possess,” said Ahmed Ghoniem, Ronald C. Crane professor in the Department of Mechanical Engineering and a colleague of Keck’s for 27 years. “His child-like enthusiasm for science and engineering was contagious and led to significant and long-lasting contributions in engine development and energy sciences. Jim always maintained that complex systems are governed by few parameters and that their behavior can be quantified accurately using ‘simplified’ models built around the Second Law of Thermodynamics. He always asked, ‘What is your model?’ insisting that conceptualization is the essence of engineering science.”

Keck was born in New York City in 1924. In 1944, when he was studying physics at Cornell University, he was put into the U.S. Army Special Engineering Detachment and sent to Los Alamos to work on the atomic bomb. There he met Margaret Ramsey, who was also working at Los Alamos as a physicist: the two would marry in 1947.

After the war, Keck returned to Cornell, where he received a BA in 1947 and a PhD in 1951. His early interests included high-energy particle physics: Keck carried out pioneering research in photo-nuclear reactions and in spectral radiation from high-temperature shock-heated air.

In 1952, after serving as a research associate at Cornell, Keck left for the California Institute of Technology, where he served as a research fellow until 1955. That year, he joined the Avco Everett Research Laboratory, where he researched the reentry of missiles and spacecraft into the atmosphere. At the time of his departure from AERL in 1965, he served as its deputy director.

After joining the MIT faculty in 1965, he began researching the problem of burning rates and pollutant formation in internal combustion engines. His experiments and theoretical studies showed many things about such engines: how nitric oxide is formed in them, the nature of turbulent flame propagation, and the nature of “knock.” His work is widely used in the automotive industry in the design of efficient and clean engines.

After retiring from MIT, Keck advised graduate students at Northeastern University.

Until his death, Keck worked to develop basic theoretical models to describe elementary atomic and molecular excitation, thermally induced chemical-reaction rates, rate-controlled constrained-equilibrium, flame theory and engine combustion.

Ronald Probstein, Ford Professor of Engineering, Emeritus, was responsible for getting Keck to come to MIT. Probstein met Keck in 1955 at AERL, where Probstein was a consultant. The two remained close friends until Keck’s death. “Jim was a remarkable person, having continued to produce outstanding research right up to his last days,” Probstein said. “Despite his outpouring of work throughout his life, which made him an outstanding scientist esteemed throughout the scientific world, I always remember a remark he once made to me, that ‘I'd rather be loved than famous.’”

Keck was a member of the National Academy of Engineering, the American Academy of Arts and Sciences, and the American Physical Society.

He is survived by his wife, Margaret Ramsey Keck; his son, Robert Keck of Rochester, N.Y.; his daughter, Patricia Keck of Andover, Mass.; and his brother, Charles Keck of Andover, Vt.

Memorial contributions may be made to Massachusetts General Hospital Leukemia and Lymphoma Fund, 165 Cambridge St., Suite 600, Boston, MA 02114, or to the charity of one's choice.

International Conference On Mechanics of Functional Materials and Structures

Website Link: https://mechanics-conferences.sciencefather.com/

Member Nomination: https://x-i.me/soumemb

Award Nomination: https://x-i.me/mecnom


Facebook : https://www.facebook.com/people/Julie... Twitter : https://twitter.com/anastas75466916 Blogger : https://anastasiadavis147.blogspot.com/ Tumblr : https://www.tumblr.com/blog/anastasia147 Pinterest: https://in.pinterest.com/mechanicscon... Reedit: https://www.reddit.com/submit
#AviationFuture #AeroInnovators #AircraftMaintenance #MechanicalMastery #EngineeringSolutions #AeroTechAdvancements #TechInAviation #FutureOfFlight #MechanicLife #StructuralSolutions#StructuralMechanicsInnovator #InnovativeStructuresAward #StructuralEngineeringExcellence
# Mechanics # Sciencefather # Shorts # Technology # Conference #Awards #Research #Engineering #Tools # Metals #Torque.

When fluid dynamics mimic quantum mechanics

MIT researchers expand the range of quantum behaviors that can be replicated in fluidic systems, offering a new perspective on wave-particle duality.

In the early days of quantum physics, in an attempt to explain the wavelike behavior of quantum particles, the French physicist Louis de Broglie proposed what he called a “pilot wave” theory. According to de Broglie, moving particles — such as electrons, or the photons in a beam of light — are borne along on waves of some type, like driftwood on a tide.

Physicists’ inability to detect de Broglie’s posited waves led them, for the most part, to abandon pilot-wave theory. Recently, however, a real pilot-wave system has been discovered, in which a drop of fluid bounces across a vibrating fluid bath, propelled by waves produced by its own collisions.

In 2006, Yves Couder and Emmanuel Fort, physicists at Université Paris Diderot, used this system to reproduce one of the most famous experiments in quantum physics: the so-called “double-slit” experiment, in which particles are fired at a screen through a barrier with two holes in it.

In the latest issue of the journal Physical Review E (PRE), a team of MIT researchers, in collaboration with Couder and his colleagues, report that they have produced the fluidic analogue of another classic quantum experiment, in which electrons are confined to a circular “corral” by a ring of ions. In the new experiments, bouncing drops of fluid mimicked the electrons’ statistical behavior with remarkable accuracy.

“This hydrodynamic system is subtle, and extraordinarily rich in terms of mathematical modeling,” says John Bush, a professor of applied mathematics at MIT and corresponding author on the new paper. “It’s the first pilot-wave system discovered and gives insight into how rational quantum dynamics might work, were such a thing to exist.”

Joining Bush on the PRE paper are lead author Daniel Harris, a graduate student in mathematics at MIT; Couder and Fort; and Julien Moukhtar, also of Université Paris Diderot. In a separate pair of papers, appearing this month in the Journal of Fluid Mechanics, Bush and Jan Molacek, another MIT graduate student in mathematics, explain the fluid mechanics that underlie the system’s behavior.

Interference inference

The double-slit experiment is seminal because it offers the clearest demonstration of wave-particle duality: As the theoretical physicist Richard Feynman once put it, “Any other situation in quantum mechanics, it turns out, can always be explained by saying, ‘You remember the case of the experiment with the two holes? It’s the same thing.’”

If a wave traveling on the surface of water strikes a barrier with two slits in it, two waves will emerge on the other side. Where the crests of those waves intersect, they form a larger wave; where a crest intersects with a trough, the fluid is still. A bank of pressure sensors struck by the waves would register an “interference pattern” — a series of alternating light and dark bands indicating where the waves reinforced or canceled each other.

Photons fired through a screen with two holes in it produce a similar interference pattern — even when they’re fired one at a time. That’s wave-particle duality: the mathematics of wave mechanics explains the statistical behavior of moving particles.

In the experiments reported in PRE, the researchers mounted a shallow tray with a circular depression in it on a vibrating stand. They filled the tray with a silicone oil and began vibrating it at a rate just below that required to produce surface waves.

They then dropped a single droplet of the same oil into the bath. The droplet bounced up and down, producing waves that pushed it along the surface.

The waves generated by the bouncing droplet reflected off the corral walls, confining the droplet within the circle and interfering with each other to create complicated patterns. As the droplet bounced off the waves, its motion appeared to be entirely random, but over time, it proved to favor certain regions of the bath over others. It was found most frequently near the center of the circle, then, with slowly diminishing frequency, in concentric rings whose distance from each other was determined by the wavelength of the pilot wave.

The statistical description of the droplet’s location is analogous to that of an electron confined to a circular quantum corral and has a similar, wavelike form.

“It’s a great result,” says Paul Milewski, a math professor at the University of Bath, in England, who specializes in fluid mechanics. “Given the number of quantum-mechanical analogues of this mechanical system already shown, it’s not an enormous surprise that the corral experiment also behaves like quantum mechanics. But they’ve done an amazingly careful job, because it takes very accurate measurements over a very long time of this droplet bouncing to get this probability distribution.”

“If you have a system that is deterministic and is what we call in the business ‘chaotic,’ or sensitive to initial conditions, sensitive to perturbations, then it can behave probabilistically,” Milewski continues. “Experiments like this weren’t available to the giants of quantum mechanics. They also didn’t know anything about chaos. Suppose these guys — who were puzzled by why the world behaves in this strange probabilistic way — actually had access to experiments like this and had the knowledge of chaos, would they have come up with an equivalent, deterministic theory of quantum mechanics, which is not the current one? That’s what I find exciting from the quantum perspective.”

International Conference On Mechanics of Functional Materials and Structures

Website Link: https://mechanics-conferences.sciencefather.com/

Member Nomination: https://x-i.me/soumemb

Award Nomination: https://x-i.me/mecnom


Facebook : https://www.facebook.com/people/Julie... Twitter : https://twitter.com/anastas75466916 Blogger : https://anastasiadavis147.blogspot.com/ Tumblr : https://www.tumblr.com/blog/anastasia147 Pinterest: https://in.pinterest.com/mechanicscon... Reedit: https://www.reddit.com/submit
#AviationFuture #AeroInnovators #AircraftMaintenance #MechanicalMastery #EngineeringSolutions #AeroTechAdvancements #TechInAviation #FutureOfFlight #MechanicLife #StructuralSolutions#StructuralMechanicsInnovator #InnovativeStructuresAward #StructuralEngineeringExcellence
# Mechanics # Sciencefather # Shorts # Technology # Conference #Awards #Research #Engineering #Tools # Metals #Torque.

B₄C–TiB₂ composite ceramics with adjustable mechanical and electrical properties

 In recent years, electro-conductive composite ceramics have gradually become a research hotspot in the functionalization of structural ceramics. However, the improvement of conductivity is generally achieved at the cost of increasing the content of conductive phases or sacrificing the mechanical properties of the composite ceramics.

Therefore, achieving high conductivity of composite ceramics at low conductive phase content is of great significance. In a recent study, electrically conductive B4C–TiB2 composite ceramics containing only 15 vol% TiB2 were prepared by a two-step spark plasma sintering process, and their mechanical and electrical performances were adjusted by the optimal particle size coupling of raw material powders.

A team of material scientists led by Songlin Ran from Anhui University of Technology in Maanshan, China recently prepared highly electro-conductive B4C–TiB2 ceramics by a two-step spark plasma sintering method.

The three-dimensional interconnected intergranular TiB2 network consisting of large B4C grains and small TiB2 grains established an excellent conductive path for the passing of electrical current, which was beneficial to the improvement of electrical conductivity. Moreover, they have also achieved controllable adjustment of the mechanical and electrical properties of B4C–TiB2 ceramics by the optimal particle size coupling of raw material powders.

"In this work, we prepared highly electro-conductive B4C–TiB2 ceramics via a two-step method based on the novel selective matrix grain growth strategy. During the sintering progress, small B4C grains were completely consumed, leaving small TiB2 grains around B4C grains to form the three-dimensional interconnected intergranular TiB2 network.

"As a result, more conductive channels were formed and thus improving the electrical conductivity of the composites," said Dr. Ran, the corresponding author of the paper, a professor in the School of Materials Science and Engineering at Anhui University of Technology.

B4C–15 vol% TiB2 composite ceramic prepared from 10.29 µm B4C and 0.05 µm TiC powders exhibited a perfect three-dimensional interconnected conductive network with a maximum electrical conductivity of 4.25×104 S/m, together with excellent mechanical properties including flexural strength, Vickers hardness and fracture toughness of 691±58 MPa, 30.30±0.61 GPa and 5.75±0.32 MPa·m1/2, respectively, while the composite obtained from 3.12 µm B4C and 0.8 µm TiC powders had the best mechanical properties including flexural strength, Vickers hardness and fracture toughness of 827±35 MPa, 32.01±0.51 GPa and 6.45±0.22 MPa·m1/2, together with a decent electrical conductivity of 0.65×104 S/m.

"The method proposed in this paper can prepare highly electro-conductive ceramics at low conductive phase content, which greatly reduces the production cost and also provides a new strategy for the regulation of microstructure and properties of composite ceramics," said Dr. Ran.

The next step is to restructure the three-dimensional network and construct a more perfect conductive network by introducing ceramic particles, whiskers, fibers, etc. In addition, the effect of the multiple conductive phases on the microstructure, electrical properties and mechanical properties of the composite ceramics need to be investigated in detail to reveal the conductive mechanism.

Other contributors include Jun Zhao, Xingshuo Zhang, Zongning Ma, Dong Wang and Xing Jin from Anhui University of Technology in Maanshan, China; and Chaohu University in Hefei, China.

International Conference On Mechanics of Functional Materials and Structures

Website Link: https://mechanics-conferences.sciencefather.com/

Member Nomination: https://x-i.me/soumemb

Award Nomination: https://x-i.me/mecnom

Facebook : https://www.facebook.com/people/Julie... Twitter : https://twitter.com/anastas75466916 Blogger : https://anastasiadavis147.blogspot.com/ Tumblr : https://www.tumblr.com/blog/anastasia147 Pinterest: https://in.pinterest.com/mechanicscon... Reedit: https://www.reddit.com/submit

#AviationFuture #AeroInnovators #AircraftMaintenance #MechanicalMastery #EngineeringSolutions #AeroTechAdvancements #TechInAviation #FutureOfFlight #MechanicLife #StructuralSolutions#StructuralMechanicsInnovator #InnovativeStructuresAward #StructuralEngineeringExcellence

# Mechanics # Sciencefather # Shorts # Technology # Conference #Awards #Research #Engineering #Tools # Metals #Torque.