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WORLD OF PHYSICS
All lectures begin at 7:30 pm in ESS 001, usually on the second Friday of the month. "Worlds of Physics" is part of a lecture series that includes the Astronomy Open Night, the Living World and the Geology Open Night.
Many engineering components from automobiles to aero engines to heavy machinery experience harsh environmental exposure such as high temperature, wear and corrosion.
Metallic materials that perform the structural functions require protective coatings to enable their operations in these situations. These coatings are usually made
of ceramic or metallic materials and need to be deposited onto the metallic structures. Since the coating materials have very high melting points, heat sources required
to melt and spray these materials are needed. Thermal plasmas formed through dissociation and ionization of inert gases provide very high temperature sources with
temperatures exceeding 15000 K and as such allow melting and projecting of particles. So called plasma spray technology is widely used in engineering industry.
This presentation will discuss the technology and provide examples of day to day applications which allow aircrafts to fly more efficiently power plants to reduce
their carbon dioxide emissions and even allow orthopedic implants to improve functionalities.
Professor Sampath is a Professor of Materials Science and Engineering, an affiliate Professor of Mechanical Engineering and Director of the Center for Thermal Spray Research (CTSR) at Stony Brook University. His research encompasses the fields of thermal spray processing of materials, synthesis and application of multilayered surfaces and development of direct write technology for thick film sensors and electronics. His specific current research involves an integrated strategy associate with science and technology of thermal spray processing of materials. The program has both fundamental and applied components. The fundamental science relates to the evolution of microstructures associated with far from equilibrium conditions. The applied component is the applicability of the thermal spray fundamentals to industrial processes in coating design, performance and reliability.
Prof. Sampath offers any interested parties a tour of his plasma spray lab (in the Heavy Engineering building) after his talk.
Physicists have known since 1968 that protons and neutrons (collectively called the Nucleons) are made up of quarks, and that gluons bind them together. The nucleons are
the building blocks of the visible universe. Theoretical ideas that prevailed in the '70s and '80s could explain most of the known properties of the nucleons successfully.
And then there was a crisis! In 1988 an experiment at CERN revealed, astonishingly, that the simple idea that quark-spins would add up to make the proton's spin, was simply
wrong! The surprise was so unexpected, that the result became known as the "Spin Crisis". Several major experimental efforts were launched around the world to understand
the Crisis, the polarized Relativistic Heavy Ion Collider (RHIC) physics program at BNL, being one of the biggest ones. I will present what we have learnt in the last 10 years
at RHIC, and ideas of a future facility, the Electron Ion Collider (EIC), needed to solve the crisis finally.
Prof. Abhay Deshpande works in experimental high energy nuclear physics. His current research focuses on understanding the contributions of quarks, antiquarks and gluons to the proton's spin using the PHENIX detector and high energy polarized proton beams at the Relativistic Heavy Ion Collider (RHIC)
Since matter is composed of atoms it is important to understand how atoms are arranged in matter and how they move relative to each other. With this understanding we can
explain the properties of materials and, with hard work, create new ones. In this talk I shall describe how various probes are used to measure where atoms are and how they move.
I shall discuss two technologically important materials: superconductors and the phenomenal shape memory alloys. I shall demonstrate the latter via a simple experiment.
Stephen Shapiro received his Ph.D from The Johns Hopkins University and joined Brookhaven National Laboratory in 1971. He specialized in using neutrons to study materials using Brookhaven's High Flux Beam Reactor (HFBR) and X-rays using the National Synchrotron Light Source (NSLS).
Chirality (or "handedness") is a ubiquitous notion in science, from biology to the physics of the Universe. It holds the key to understanding many mysteries of the quantum world,
and opens amazing possibilities for tomorrow's technologies.
Dmitri Kharzeev is a professor of physics at Stony Brook University. He is also a senior scientist and the Head of Theory group of RIKEN-BNL Center at Brookhaven National Laboratory. He received his PhD degree from Moscow State University in 1990, and did postdoctoral research at CERN in Geneva, Italian National Institute for Nuclear Physics, and in Bielefeld University, Germany prior to coming to BNL in 1997 as a RIKEN-BNL Fellow. In 2004 he became the Head of BNL Nuclear Theory group, and from 2010 holds a joint appointment at Stony Brook University and BNL. He is a Fellow of APS and AAAS.
Dmitri Kharzeev main research interest at present, is the behavior of chiral particles in nuclear, particle, and condensed matter physics, as well as technological applications of chiral materials.