MCW07 Simple Models for Molecular Transport Junctions

13 Sep 2007 | Online Presentations | Contributor(s): Misha Galperin, Abraham Nitzan, Mark A. Ratner

We review our recent research on role of interactions in molecular transport junctions. We consider simple models within nonequilibrium Green function approach (NEGF) in steady-state regime.

https://nanohub.org/resources/3072

MCW07 Conductance Switching in Fluorene/TiO2 Molecular Heterojunctions

13 Sep 2007 | Online Presentations | Contributor(s): Richard L. McCreery

Molecular junctions consisting of a monolayer of fluorene and 10 nm of TiO2 between conducting contacts exhibit a memory effect upon positive polarization of the of the TiO2 for a few milliseconds. …

https://nanohub.org/resources/3071

MCW07 Molecular Electronics and the Bottom-up View of Electronic Conduction

12 Sep 2007 | Online Presentations | Contributor(s): Supriyo Datta

Molecular electronics is commonly associated with the bottom-up approach to nanofabrication. My objective in this talk is to point out how it also leads to a bottom-up view of electronic conduction …

https://nanohub.org/resources/3239

MCW07 Silicon Based Nanopore Sensors for Detection of DNA Molecules

11 Sep 2007 | Online Presentations | 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 …

https://nanohub.org/resources/3079

MCW07 Electronic Level Alignment at Metal-Molecule Contacts with a GW Approach

05 Sep 2007 | Online Presentations | Contributor(s): Jeffrey B. Neaton

Most recent theoretical studies of electron transport in single-molecule junctions rely on a Landauer approach, simplified to treat electron-electron interactions at a mean-field level within density …

https://nanohub.org/resources/3094

MCW07 Modeling Charging-based Switching in Molecular Transport Junctions

23 Aug 2007 | Online Presentations | Contributor(s): Sina Yeganeh, Misha Galperin, Mark A. Ratner

We will discuss several proposed explanations for the switching and negative differential resistance behavior seen in some molecular junctions. It is shown that a proposed polaron model is …

https://nanohub.org/resources/3076

Micro-scaled Biochips with Optically Active Surfaces for Near and Far-field Analysis of Cellular Fluorescence

31 Aug 2007 | Online Presentations | Contributor(s): Huw Summers

The integration of thin (< 100 nm) metal films with micro-scale optical waveguides provides a route to controlled spatial excitation of cellular fluorescence within a biochip platform. Surface …

https://nanohub.org/resources/3121

HCIS-15 Lecture: Nanodevices and Maxwell’s Demon

23 Jul 2007 | Online Presentations | Contributor(s): Supriyo Datta

The 15th International Conference on Nonequilibrium Carrier Dynamics in Semiconductors (HCIS-15) lecture. This 30 minute lecture covers roughly the same material as Lecture 1 of Concepts of …

https://nanohub.org/resources/2966

SPMW A fresh look to amplitude-modulation AFM: Force minimization, interaction measurement, and the quest for high resolution

05 Jan 2007 | Online Presentations | Contributor(s): Udo D. Schwarz

Frequency modulation atomic force microscopy (FM-AFM) has been able to deliver high-resolution atomic-scale images in ultrahigh vacuum for over one decade. In addition, there have been recent reports …

https://nanohub.org/resources/2208

Amine Linked Single Molecule Circuits: Systematic Measurements & Understanding

02 Jul 2007 | Online Presentations | Contributor(s): Mark S Hybertsen

Formation and function of well-defined linkages between organic molecules and metallic electrodes has been a key issue in the field of molecular electronics. We recently discovered that the …

https://nanohub.org/resources/2894

Some Remarks to Electrodynamics of Materials with Negative Refraction

26 Jun 2007 | Online Presentations | Contributor(s): Victor G. Veselago

The negative refraction coefficient n < 0 can be introduced for isotropic materials with anti-parallel directions of phase and group velocities. If some of material can be described by negative n it …

https://nanohub.org/resources/2792

Victor Veselago Interview on Nanotechnology and Photonics

26 Jun 2007 | Online Presentations | Contributor(s): Victor G. Veselago, Phillip Fiorini

Nanotechnology and photonics interview with Phillip Fiorini.

https://nanohub.org/resources/2796

Selective Silicon Epitaxy Seen at the Nanometer Scale

14 Jun 2007 | Online Presentations | Contributor(s): Matthew Mark Sztelle

The presenter introduces NEMS (nanoelectromechanical systems) and STM (Scanning Tunneling Microscopy and continues to present material on Selective Silicon Epitaxy seen at the Nanometer ScaleMatthew …

https://nanohub.org/resources/2810

Piezoelectric Transducers: Strain Sensing and Energy Harvesting (and Frequency Tuning)

15 Jun 2007 | Online Presentations | 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, …

https://nanohub.org/resources/2575

Dripping, Jetting, Drops and Wetting: the Magic of Microfluidics

13 Jun 2007 | Online Presentations | Contributor(s): David A. Weitz

This talk will discuss some of the new opportunities That arises by precisely controlling fluid flow and mixing using microfluidic devices. I describe studies to elucidate mechanisms of drop …

https://nanohub.org/resources/2764

On the Cross Roads of Biology and Nanotechnology – Selective DNA Nanopore Sensors

21 Mar 2007 | Online Presentations | Contributor(s): Samir Iqbal

The ability to manipulate and identify the properties of single biological molecules with the potential of characterizing biological processes at the most fundamental levels can significantly …

https://nanohub.org/resources/2486

Charge Transfer Across an Energy Transducing Integral Membrane Protein Complex

31 May 2007 | Online Presentations | 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 …

https://nanohub.org/resources/2679

SPMW AFM at Video Rate and Beyond

16 May 2007 | Online Presentations | Contributor(s): Mervyn Miles

The particular advantages that atomic force microscopy (AFM) has over other types of microscopy are well-known, but it has the one major disadvantage of low imaging rates in conventional instruments …

https://nanohub.org/resources/2723

Polymers for nanoparticle and nanocrystal formulations for drug delivery

15 May 2007 | Online Presentations | Contributor(s): Stephen R. Byrn

Nanoparticles hold great promise for drug delivery applications. Nanoparticles might prove to be the only way to bring water insoluble, chemically unstable drugs to market. Because of this, this …

https://nanohub.org/resources/2690

Electron Emission from Nanoscale Carbon Materials

15 May 2007 | Online Presentations | Contributor(s): Timothy S Fisher

Prior studies on electron emission show possibly beneficial effects of nanoscale phenomena on energy-conversion characteristics. For example, recent work has shown that the electric field around a …

https://nanohub.org/resources/2710