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Nano Electro-Mechanical Systems (NEMS) are tiny
machines built at the nanometer scale. Current
NEMS applications are simple machines, such as
the tiny cantilever shown at the right. An electrical circuit measures the deflection
of the lever. A larger version of this device,
with dimensions at the micrometer or millimeter
scale, is commonly used as an airbag sensor in
automobiles. A sudden stop causes a strong
deflection of the lever, which signals that
the airbags should be deployed. At the nano
scale, such a lever is sensitive enough to
measure the weight of individual atoms or
molecules resting upon it.
Learn more about NEMS from the
resources available on this site, listed below.
Molecular Transport Structures: Elastic Scattering, Vibronic Effects and Beyond
out of 5 stars
13 Feb 2006 | | Contributor(s):: Mark Ratner, Abraham Nitzan,
Current experimental efforts are clarifying quite beautifully the nature of charge transport in so-called molecular junctions, in which a single molecule provides the channel for current flow between two electrodes. The theoretical modeling of such structures is challenging, because of the...
A Gentle Introduction to Nanotechnology and Nanoscience
13 Feb 2006 | | Contributor(s):: Mark Ratner
While the Greek root nano just means dwarf, the nanoscale has become a giant focus of contemporary science and technology. We will examine the fundamental issues underlying the excitement involved in nanoscale research - what, why and how. Specific topics include assembly, properties,...
Hierarchical Physical Models for Analysis of Electrostatic Nanoelectromechanical Systems (NEMS)
05 Jan 2006 | | Contributor(s):: Narayan Aluru
This talk will introduce hierarchical physical models and efficient computational techniques for coupled analysis of electrical, mechanical and van der Waals energy domains encountered in Nanoelectromechanical Systems (NEMS). Numerical results will be presented for several silicon...
Atomic Force Microscopy
01 Dec 2005 | | Contributor(s):: Arvind Raman
Atomic Force Microscopy (AFM) is an indispensible tool in nano science for the fabrication, metrology, manipulation, and property characterization of nanostructures. This tutorial reviews some of the physics of the interaction forces between the nanoscale tip and sample, the dynamics of the...
First Principles-based Atomistic and Mesoscale Modeling of Materials
01 Dec 2005 | | Contributor(s):: Alejandro Strachan
This tutorial will describe some of the most powerful and widely used techniques for materials modeling including i) first principles quantum mechanics (QM), ii) large-scale molecular dynamics (MD) simulations and iii) mesoscale modeling, together with the strategies to bridge between them....
Nanoparticle Synthesis and Assembly for Biological Sensing
25 Oct 2005 | | Contributor(s):: Gil Lee
Nanoparticles have unique physical and chemical properties that make them very useful for biological and chemical sensing. For example, colloidal gold has been used as an optical transducer for antibody based sensing for over twenty years and is the basis for a many of the point-of-use...
Wireless Integrated MicroSystems (WIMS): Coming Revolution in the Gathering of Information
01 Sep 2005 | | Contributor(s)::
Wireless integrated microsystems promise to become pervasive during the coming decade in applications ranging from health care and environmental monitoring to homeland security. Merging low-power embedded computing, wireless interfaces, and wafer-level packaging with microelectromechanical...
Laser Cooling of Solids
06 Oct 2005 | | Contributor(s)::
Enhanced laser cooling of ion doped nanocrystalline powders (e.g., Yb3+: Y2O3) can be achieved by enhancing the anti-Stokes, off-resonance absorption, which is proportional to the three design-controlled factors, namely, dopant concentration, pumping field energy, and anti-Stokes transition...
Introduction to Carbon Nanotube Electronics
12 Oct 2005 | | Contributor(s):: Susan Sinnott
Carbon nanotubes (CNT) have interesting, structure-dependent electronic properties. In particular, CNTs can be a metallic or semiconducting depending on the way in which the carbon atoms are arranged in the CNT walls. The purpose of this learning module is to familiarize students with the basic...
Modeling and Simulation of Sub-Micron Thermal Transport
26 Sep 2005 | | Contributor(s):: Jayathi Murthy
In recent years, there has been increasing interest in understanding thermal phenomena at the sub-micron scale. Applications include the thermal performance of microelectronic devices, thermo-electric energy conversion, ultra-fast laser machining and many others. It is now accepted that...
Fine Tuning Microcantilever Vibrations for Ultrasensitive Analyte Mass Detection
27 Jul 2005 | | Contributor(s):: Arvind Raman
Microcantilever based biochemical sensing has shown tremendous promise for ultrasenstive detection in both liquid and ambient conditions. However improving the sensitivity, reliability and robustness of these sensors so they can achieve their potential needs substantial efforts in (a) chemical...
Nanostructure Engineered Sensors for Gas Detection in Space and Terrestrial Applications
28 Jul 2005 | | Contributor(s)::
A nanosensor technology has been developed using single walled carbon nanotubes (SWNTs) on a pair of interdigitated electrodes (IDE) processed with a silicon-based microfabrication and micromachining technique. These sensors have been exposed to nitrogen dioxide, methane, acetone, benzene,...
Organic Electronics Part I: Chemical Modulation
27 Jul 2005 | | Contributor(s)::
Organic semiconductors (OS) have been in the center of attention in at least two areas: in chemical ,sensors and in molecular electronics. Although the chemistry and physics governing them is the same their performance characteristics are apparently measured on different scales. Electrochemical...
A Novel Diagnostic Assay Based On Nanomechanics
Micro-fabricated silicon cantilevers arrays offer a novel label-free approach where ligand-receptor binding interactions occurring on the sensor generate nanomechanical signals like bending or a change in mass that is optically detected in-situ. We report the detection of multiple unlabelled...
Introduction to BioMEMS and Bionanotechnology
27 Jul 2005 | | Contributor(s):: Rashid Bashir
BioMEMS and Bionanotechnology have the potential to make significant impact in a wide range of fields and applications. This lecture series introduces the basic concepts and topics underlying the interdisciplinary areas of BioMEMS and Bionanotechnology. Advances in this field require the...
2004 Computational Materials Science Summer School
07 Jun 2004 |
This short course will explore a range of computational approaches relevant for nanotechnology.
Computational Methods for NEMS
16 Jun 2004 | | Contributor(s):: Narayan Aluru
Computational Methods for NEMS
15 Jun 2004 | | Contributor(s):: Susan Sinnott
Sensing Technology Needs in Long-Term Human Space Exploration
The sensing technologies are mainly derived from three broad areas, namely, absorbance, fluorescence and electrochemical. The development of a sensing system with unique requirements for space applications in these areas will be addressed. The application of these sensing systems in Tissue...
Introduction to Molecular Conduction
21 Jul 2005 | | Contributor(s):: Ferdows Zahid, Magnus Paulsson, Avik Ghosh, Supriyo Datta
A scanning probe microscope brushes the tips of molecules rising up from a gold substrate. After making contact, the probe measures a very strange current-voltage relationship--linear portions separated by flat spots or sharp increases. Definitely not Ohm's law. Is the experiment correct?...