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Preetam Kumar Sharma
Nanomaterials in Biosensing Using Ion Selective Field Effect Transistors and Metal Particles
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30 Jul 2008 | | Contributor(s):: Nalam Madhusudhana Rao
The multifunctionality, multilayerable architechture and size of nanomaterials offer tremendous opportunities in developing sensing platforms. Ion Selective Field Effect Transistors (ISFET) are solid state and robust pH/ion sensing devices with excellent “voltage vs. ion concentration”...
Ionic Selectivity in Channels: complex biology created by the balance of simple physics
05 Jun 2008 | | Contributor(s):: Bob Eisenberg
An important class of biological molecules—proteins called ionic channels—conduct ions (like Na+ , K+ , Ca2+ , and Cl− ) through a narrow tunnel of fixed charge (‘doping’). Ionic channels control the movement of electric charge and current across biological membranes and so play a role in biology...
04 Feb 2008 | | Contributor(s):: David Papke, Reza Toghraee, Umberto Ravaioli, Ankit Raj
Simulates ion flow through a channel.
New Dimension in Performance: Harnessing 3D Integration Technology
29 Nov 2007 | | Contributor(s):: Kerry Bernstein
Despite generation on generation of scaling, computer chips have remained essentially 2-dimensional. Improvements in on-chip wire delay, and in the total number of inputs and outputs has not been able to keep up with improvements to the transistor, and its getting harder and harder to hide it! 3D...
MCW07 Silicon Based Nanopore Sensors for Detection of DNA Molecules
11 Sep 2007 | | Contributor(s):: Samir Iqbal, Demir Akin, Rashid Bashir
Solid-state nanopores have emerged as possible candidates for next-generation DNA sequencing devices. In this talk, we will review our recent work in development of solid-state nanopore channels that are selective towards single strand DNA (ssDNA). Nanopores functionalized with a 'probe' of...
Charge Transfer Across an Energy Transducing Integral Membrane Protein Complex
31 May 2007 | | Contributor(s):: William A. Cramer
The cytochrome bc complexes of the mitochondrial respiratory and photosynthetic electron transport chains are hetero-oligomeric integral membrane proteins. These proteins are responsible for most of the energy transduction and transport activities across biological membranes. Such complexes...
Introduction to X-ray Photoelectron Spectroscopy and to XPS Applications
17 May 2007 | | Contributor(s):: Dmitry Zemlyanov
X-ray Photoelectron Spectroscopy (XPS), which is known as Electron Spectroscopy for Chemical Analysis (ESCA), is a powerful research tool for the study of the surface of solids. The technique is widely used for studies of the properties of atoms, molecules, solids, and surfaces. The main success...
Is Seeing Believing? How to Think Visually and Analyze with Both Your Eyes and Brain
26 Mar 2007 | | Contributor(s):: David Ebert
This presentation will cover the basic techniques, and some of the available tools, for visualization, and will explain how to avoid miscommunicating information from visualizations.