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Ripples and Warping of Graphene: A Theoretical Study
08 Jun 2010 | | Contributor(s):: Umesh V. Waghmare
We use first-principles density functional theory based analysis to understand formation of ripples in graphene and related 2-D materials. For an infinite graphene, we show that ripples are linked with a low energy branch of phonons that exhibits quadratic dispersion at long wave-lengths. Many...
Peanuts vs. Pyramids: Two Perspectives on MEMS
29 Dec 2009 | | Contributor(s):: Stephen D. Senturia
MEMS, the acronym for Micro-electromechanical Systems, also known simply as “Micro-systems,” come in two main types: commodity products (the peanuts) and MEMS-enabled products (the pyramids, or, more correctly, the inverted pyramids). The economics of scale greatly affect how these two classes...
Characterizing and scaffolding students' conceptions of size and scale
29 Dec 2009 | | Contributor(s):: Alejandra J. Magana
Scale concepts transcend disciplinary boundaries of science, mathematics, engineering, and technology because they are essential for performing explanations, theory generation, observation, and activities associated with design. Current research related to size and scale has identified several...
Molecular Sensors for MEMS
10 Dec 2009 | | Contributor(s):: John P. Sullivan
This seminar will cover the issues involved in using molecular sensors in MEMS and their application to microchannels, supersonic micronozzles, microjet impingement, microturbines and unsteady fluidic actuators.
Birck Nanotechnology Center Annual Research Review: 2009
02 Dec 2009 | | Contributor(s):: Timothy D. Sands
The Third Annual Birck Nanotechnology Center Research Symposium was held on April 6, 2009 in Purdue's Discovery Park. Along with poster presentations by graduate students and postdoctoral researchers, several areas of strength were highlighted in the overview presentations made available here.
Liquid Transportation Fuels from Coal and Biomass
01 Dec 2009 | | Contributor(s):: Michael R. Ladisch
Report on the National Academies’ America’s Energy Future Study 2009.
Pioneers in Energy Seminar Series
01 Dec 2009 |
This Purdue University, West Lafayette campus speaker series supports lectures & visits by leaders in the field of energy research with the goal of increasing understanding of specific energy challenges and building a stronger Purdue energy research community.
Sustainable Energy Solutions for a Limited Fossil Fuel Future
01 Dec 2009 | | Contributor(s):: Rakesh Agrawal
Rakesh Agrawal is a member and participated in the National Academy of Engineering Study on "Electricity from Renwable Resources." His lecture will be based on his independent work in the area of sustainable solutions.
Optical BioMEMS Microfluidic Technologies for Hand-Held, Point-of-Care, Medical Devices
23 Nov 2009 | | Contributor(s):: James Leary
Portable, point-of-care, medical diagnostic devices could provide an important new component in more cost-effective healthcare delivery. Rapid measurements of blood samples during an examination within a doctor’s office or in the field, could allow immediate appropriate treatment of medical...
Metal Oxide Nanowires as Gas Sensing Elements: from Basic Research to Real World Applications
out of 5 stars
21 Sep 2009 | | Contributor(s):: andrei kolmakov
Quasi 1-D metal oxide single crystal chemiresistors are close to occupy their specific niche in the real world of solid state sensorics. Potentially, the major advantage of this kind of sensors with respect to available granular thin film sensors will be their size and stable, reproducible and...
Experiment vs. Modelling: What's the problem?
10 Aug 2009 | | Contributor(s):: William L. Barnes
Progress in plasmonics has been greatly assisted by developments in experimental techniques and in numerical modelling. This talk will look at some of the difficulties that emerge when comparisons are made between experiment and theory. Through the use of four examples I will illustrate what...
Nanotribology, Nanomechanics and Materials Characterization Studies
08 Jun 2009 | | Contributor(s):: Bharat Bhushan
Fundamental nanotribological studies provide insight to molecular origins of interfacial phenomena including adhesion, friction, wear and lubrication. Friction and wear of lightly loaded micro/nano components are highly dependent on the surface interactions (few atomic layers). Nanotribological...
The Challenges of Micro-System Product Development
05 Jun 2009 | | Contributor(s):: James J. Allen
This talk will discuss the historical development of micro‐system technology, the products that have been developed and the challenges to development of a reliable product.
NCN Nanomaterials: Research Seminars
02 Jun 2009 |
Engineering the Classroom: Engineering science as the core for technology teacher education for the 21st century
28 Apr 2009 | | Contributor(s):: Michael De Miranda, National Center for Learning & Teaching in Nanosca
This NCLT seminar presentation will report on content analysis research of pre-service teacher/engineering science students’ ability to conceptualize, design, and evaluate student design brief solutions in high school technology classes. This research is just a part of a larger challenge within...
Renewable Solar Energy: Has the Sun Finally Risen on Photovoltaics?
10 Apr 2009 | | Contributor(s):: Mark R. Pinto
After a review of the overall renewable energy landscape,including the central role of economics, we present here the case thatPV is on the verge of becoming a major source of electrical powerthrough a principle similar to that which underlies the 50 year progressof IC technology - the reduction...
MCW07 Exploring Trends in Conductance for Well-Defined Single Molecule Circuits
04 Apr 2009 | | Contributor(s):: Mark S Hybertsen
In our recent research, we have been able to measure and characterize the impact of intrinsic molecular properties on the conductance of single molecule circuits formed with amine-gold linkages. In this talk, I will review the experiments and the physical picture of the junction based on the...
Quantitative, Kinetic Models of Cellular Circuits
04 Apr 2009 | | Contributor(s):: Michael R. Brent
Living cells contain complex, analog circuits that regulate the rate at which each gene produces its product. The kinetic properties of these circuits enable cells to respond to changes in their environments and thus to survive, reproduce, and compete. For decades, molecular biologists have been...
Aluminum: a safe, economical, high energy density material for energy storage, transport and splitting water to make hydrogen on demand
30 Mar 2009 | | Contributor(s):: Jerry M. Woodall
In 1968, a team lead by the author discovered that liquid gallium saturated with aluminum at room temperature would split water into hydrogen gas, alumina and heat. More recently his current team has discovered that bulk, solid Al rich alloys will also split water in the same manner. Since 1)...
"Who Owns Truth?" - Biomedical Research in a Health Policy Context
30 Mar 2009 | | Contributor(s):: Samuel A. Richmond
This presentation examines a claim made by PhRMA on behalf of pharmaceutical manufacturing companies of America, and the response of the International Committee of Medical Journal Editors (ICMJE) questioning drug company publication policies and practices. Also considered are changes in law...