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Introduction to XPS: What we should know about X-ray Photoelectron Spectroscopy
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Professor Dana Weinstein Seminar
RF Solid- State Vibrating Transistors Semiconductor micro-electromechanical (MEM) resonators, with quality factors (Q) often exceeding 10^4 can provide a high performance, low-power, compact CMOS-compatible alternative to electrical components in wireless communication and signal processing. Most electromechanical devices require a release step to freely suspend moving structures, which necessitates costly complex encapsulation methods and back end-of-line processing of large-scale devices....
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Prof. Joseph P Heremans
Solid-State Thermal Energy Conversion Solid state thermal energy converters are primarily based on thermoelectric materials. The major goal in thermoelectrics research is to simultaneously enhance the thermopower while maintaining a high electrical conductivity, and minimize the thermal conductivity without affecting the electronic properties. We review here three modern physical principles to achieve these goals. Starting with the thermal conductivity of thermoelectric materials, we know...
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Dr. Dennis Buss Forum
A Forum on the Future of Electronics Silicon chips in personal electronics and computers, electronic displays, and the semiconductor lasers used in CD players and for Internet communications, have shaped the world we live in, but will the current paradigm that has driven progress for the past 40+ years continue, or will the 21st Century be a new era of electronics? These questions will be addressed in a seminar by Dr. Dennis Buss followed by a panel discussion with Purdue faculty. ...
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Michael J. Demkowicz Seminar
Design of structural materials using reduced order mesoscalemodels Computational materials science brings a physics-based materials design capability within reach. However, Design of structural materials for strength and stability is challenging because it deals iwth inherently collective mechanisms operating at multiple time and length scales. I will illustrate a design strategy built on reduced order mesoscale models, which afford simplified descriptions of the essential phsyics of...
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Stanislaus S. Wong Seminar
Stanislaus S. Wong Professor of Chemistry, SUNY Stony Brook Chemical Strategies in Energy-Related Nanoscience Bio: Stanislaus S. Wong earned his Ph.D. from Harvard University in 1999 under the tutelage of Professor Charles M. Lieber. After completing a postdoctoral fellowship at Columbia University with Professor Louis E. Brus, he is currently a full Professor of Chemistry at SUNY Stony Brook with a joint appointment at Brookhaven National Laboratory. Professor Wong is a member of the...
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Prof. S. Srinivasa Murthy Seminar
SOLID STATE HYDROGEN STORAGE & DELIVERY FOR PORTABLE & MOBILE APPLICATIONS; THERMAL ENGINEERING ASPECTS Efficient, economical, & safe storage & delivery is essential for using hydrogen as a fuel in mobile and portable applications. The thermal design of solid state hydrogen storage devices involves coupled heat and mass transfer with heat generation and chemical reactions. Important design considerations include gravimetric hydrogen storage capacity and charging/discharging...
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Prof. Joachim Knoch Seminar
Tunnel FETs – Device Physics and Realizations In recent years, tunnel field-effect transistors (TFETs) have attracted a great deal of attention for future nanoelectronics devices. The reason for the interest is that TFETs potentially enable a significant reduction of the power consumption of highly integrated circuits. However, to date most of the experimental demonstrations of TFETs exhibit a performance inferior to conventional MOSFETs. Here, the operating principles of TFETs will...
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Aaron D. Franklin seminar - "The Road Ahead for Carbon Nanotube Transistors"
Brief Bio: Aaron Franklin received his Ph.D. from Purdue University in 2008 and his B.S.E. degree from Arizona State University in 2004, both in electrical engineering. Since 2009, he has been a Research Staff Member at IBM's T. J. Watson Research Center working in the area of low-dimensional nanoelectronics. His research focuses on the integration of nanomaterials into electronic devices, including high-performance transistors, thin-film transistors, supercapacitors, and photovoltaic...
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Integrated Imaging Seminar - Prof. Jeff Fessler
Title: Accelerating Image Reconstruction using Variable Splitting Method Abstract:Statistical image reconstruction methods have been used in PET and SPECT commercially for well over a decade and have recently begun to appear commercially in X-ray CT systems, offering the possibility of reducing X-ray dose. Iterative methods are also poised to impact clinical MRI. Computation time is a significant challenge for iterative image reconstruction methods, particularly in X-ray CT and MRI....
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Solar Seminar Series - Dr. Richard Schwartz
Title: A Partial History of Solar Cell Modeling at Purdue Abstract: There is a long history of the modeling of solar cells at Purdue that has led to the prominence that the work here now enjoys. The early work in this area was not directed at photovoltaic cells as solar cells but as thermophotovoltaic (TPV) cells. This talk will trace the path that was followed from the development and modeling of TPV cells to Interdigitated Back Contact (IBC) cells. We will discuss how this then led to...
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Integrated Imaging Seminar - Prof. Daniela Bortoletto
The Discovery of a New Particle. Is it the Higgs? Abstract: On July 4th 2012 physicists working at the Large Hadron Collider (LHC), the world’s highest-energy proton accelerator, at CERN in Geneva, Switzerland announced the discovery of a new particle that is about 135 times heavier than a proton. This particle seems to closely resemble the Higgs boson that was hypothesized over forty years ago to explain the masses of all elementary particles in the universe. In this talk, I will...
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Solar talk by Stephen Katsaros, Nokero Intl. Ltd
Recently, Steve Katsaros (Purdue alumnus) received the Patent for Humanity Award from the U.S. Department of Commerce's U.S. Patent and Trademark Office. The award is supported by the Ewing Marion Kauffman Foundation. He is a founder and CEO of Nokero International Ltd. He will describe his patented technology as well as his entrepreneurial experiences. Nokero uses the world’s best solar cells, made by SunPower: · ...
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Billy J. "BJ" Stanbery - Solar Seminar Series
High-rate processing and advanced emitter structures for CIGS PV module manufacturing Achieving both macroscopic homogeneity and nanoscale heterogeneity for non-stoichiometric multinary compounds is a critical challenge for the success of copper indium gallium selenide (CIGS) photovoltaic cells. Co-evaporation yields world record performance, but is also a high-temperature vacuum process that is difficult to scale. Here, we consider reactive transfer processing (RTP), which has...
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Solar Seminar - Kurt R Mikeska
Crystalline Silicon Solar Cell Metallization Crystalline silicon solar cell technology has advanced by improvements to all aspects of cell design including metallization. Improvements to metal contacts have been synergistic with other cell improvements such as passivation, lightly doped emitters, and boron doped emitters. Recent improvements in metallization contacts have allowed the solar cell industry to move from highly doped emitters (HDE), designed to enable sufficiently low contact...
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Integrated Imaging Seminar - Prof. Peyman Milanfar
Title: Data-adaptive Filtering and the State of the Art in Image Processing Abstract: Recent approaches to processing and restoration of images and video have brought together several powerful data-adaptive methods from different fields of work. Examples include Moving Least Square (from computer graphics), the Bilateral Filter and Anisotropic Diffusion (from computer vision), Boosting and Spectral Methods (from Machine Learning), Non-local Means (from Signal Processing), BregmanIterations...
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Integrated Imaging Seminar - Prof. Lawrence Carin
Title: Coded Aperture Compressive Spectral and Temporal Imaging Abstract:Compressive sensing is a new technology that allows one to acquire data with high information content, based on measurements that are much fewer in number than would be expected by Nyquist theory. This is achieved by leveraging signal models that go beyond signal bandwidth, to exploit the fact that signals of interest typically reside in a low-dimensional subspace. This includes exploitation of concepts like sparsity,...
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Suresh V. Garimella - Solar Seminar Series
Energy Storage – Options and Opportunities I will briefly review the drivers for renewable and clean energy technologies, and the challenges in the widespread use of renewables. In particular, I will focus on the need for inexpensive and reliable energy storage approaches if inherently intermittent and transient renewable sources are to gain broad acceptance. As a specific example, I will tell a story from our group related to thermal energy storage in...
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