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Vacuum Nanosystemsfor Energy Conversion
01 Feb 2013 | | Contributor(s):: Roger T. Howe
Micro and nano-fabricated sensors (e.g., accelerometers and gyroscopes) and actuators (e.g., light valve chips for projection and cell-phone displays) have become commonplace in recent years. Some of these devices must operate in a hermetically sealed, lowpressure ambient, a need that motivated...
Thermoelectric Energy Conversion: Transport, Materials, and Systems
05 Dec 2012 | | Contributor(s):: Gang Chen
his talk will start with an introduction to thermoelectric effects, and move on to discuss ways to understand and engineer electron and phonon transport in thermoelectric materials to improve the figure of merit. On phonon transport, thermal conductivity spectroscopy and coherent heat conduction...
Limits of Thermal Processes and their Implications on Efficient Energy Utilization
27 Oct 2010 | | Contributor(s):: Arunava Majumdar
About 90 percent of the world’s energy use involves thermal processes – thermal engines to generate mechanical power; heating and cooling in buildings; heating involved in manufacturing of steel, cement, glass, petrochemicals etc. To identify opportunities for improving current technologies or...
Transformative Power Semiconductor Technologies to Impact 21st Century Energy Economy, and Space and Defense Electronics
22 Sep 2010 | | Contributor(s):: Krishna Shenai
This talk will focus on advanced power semiconductor materials, devices, circuits and systems that are needed in order to address this daunting challenge. Specifically we will discuss emerging silicon and wide bandgap materials and power devices, heterogeneous chip-scale power integration,...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 23: Nanomaterials and Devices for Energy Conversion I
28 Dec 2009 | | Contributor(s):: Nick Fang, Omar N Sobh
Nanomaterials and Devices for Energy ConversionTopics: Overview of Actuators at Nanoscale Electrostatic Actuators Piezo-Actuators Surface Acoustic Wave Motors Actuator Selection Electrochemical Actuators Solid State Electrochemical Actuator Electrochemical nano-actuator Electrochemical conversion...
Illinois ME 498 Introduction of Nano Science and Technology, Lecture 24: Nanomaterials and Devices for Energy Conversion II
Nanomaterials and Devices for Energy Conversion IITopics: Electrochemistry - Energy Storage Non-linear Diffusion Effect in Electrochemistry Architecture of 3-D batteries Nanomaterials for Energy Storage Solutions for Reversibility Nano-wire Lithium Ion Batteries Nano-wire Solar Cells Micro Nano...
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) the...
ECE 495N Lecture 40: Thermoelectricity
out of 5 stars
29 Dec 2008 | | Contributor(s):: Supriyo Datta
Nanoscale Opto Thermo Electric Energy Conversion Devices
28 May 2008 | | Contributor(s):: Ali Shakouri
We review solid-state devices that allow direct conversion of heat into electricity. We describe fundamental and practical limits of conventional thermoelectric materials. Novel metal-semiconductor nanocomposites are developed where the heat and charge transport are modified at the atomic level....
The Potential of Nanostructured Materials to Address the Challenge of a Sustainable Energy Resource
14 Feb 2008 | | Contributor(s):: Mildred S. Dresselhaus
An overview is presented on the grand challenges to the science community in the next few decades in meeting global energy needs for the 21st century. Major advances in our present capabilities will be needed for energy production and storage and for its conversion from one form to another. These...
Microscale Ionic Wind for Local Cooling Enhancement
26 Oct 2007 | | Contributor(s):: David B Go
As the electronics industry continues to develop small, highly functional, mobile devices, new methods of cooling are required to manage the thermal requirements of the not only the chip but the entire system. Comfortable skin temperatures, small form factors, and limited power consumption are...
Piezoelectric Transducers: Strain Sensing and Energy Harvesting (and Frequency Tuning)
15 Jun 2007 | | Contributor(s):: Toshikazu Nishida
Acoustic pressure or mechanical force sensing via piezoelectric coupling is closely related to the harvesting of electrical energy from acoustical and mechanical energy sources. In this talk, mesoscale and microscale piezoelectric transducers for acoustic and vibrational sensing and energy...
The Energy Problem: What the Helios Project Can Do About It
13 Jun 2007 | | Contributor(s):: Steven Chu
Nobel Prize winner Steven Chu talks about the Helios Project for the 2007 'Science at the Theater' series at Berkeley Repertory Theater in Berkeley, California. He proposes an aggressive research program to transform the existing and future energy systems of the world away from technologies that...
Solid-State Lighting: An Opportunity for Nanotechnologists to Address the Energy Challenge
25 Apr 2007 |
More than one-fifth of the electrical power consumed in the U.S. is used for general illumination. Much of this energy is wasted to heat filaments in incandescent lamps, a century-old technology with an efficiency of about 5%. Fluorescent lighting is more efficient, but problems of color quality,...
BNC Annual Research Symposium: Nanoscale Energy Conversion
23 Apr 2007 | | Contributor(s):: Timothy S Fisher
This presentation is part of a collection of presentations describing the projects, people, and capabilities enhanced by research performed in the Birck Center, and a look at plans for the upcoming year.