نتایج جستجو برای: nems

تعداد نتایج: 639  

Journal: :Biosensors and Bioelectronics 2021

Carbon microelectromechanical system (C-MEMS) and carbon nanoelectromechanical (C-NEMS) have been identified as promising technologies for a range of biotech applications, including electrochemical biosensors, biofuel cells, neural probes, dielectrophoretic cell trapping. Research teams around the world devoted more time to this field. After almost two decades efforts on developing C-MEMS C-NEM...

2016
Qian Shen Caijun Yang Jie Chang Lina Wu Wenwen Zhu Bing Lv Dan Ye Shimin Yang Yu Fang

BACKGROUND In 2009, Chinese government launched a new healthcare reform, one of the key points of which is to establish National Essential Medicine System (NEMS). Hospital pharmacists are directly related to the implementation of NEMS. This study is to examine knowledge of and attitudes towards the implementation of the NEMS among hospital pharmacists in western China. METHODS We conducted a ...

Journal: :Nano letters 2011
A Sampathkumar K L Ekinci T W Murray

We report a versatile all optical technique to excite and read-out a distributed nanoelectromechanical systems (NEMS) array. The NEMS array is driven by a distributed, intensity modulated optical pump through the photothermal effect. The ensuing vibrational response of the array is multiplexed onto a single probe beam in the form of a high frequency phase modulation. The phase modulation is opt...

2006
Horacio D. Espinosa Changhong Ke

Nanoelectromechanical systems (NEMS) aremade of electromechanical devices that have critical dimensions from hundreds down to a few nanometers. By exploring nanoscale effects, NEMS present interesting and unique characteristics, which deviate greatly from their predecessor microelectromechanical systems (MEMS). For instance, NEMS-based devices can have fundamental frequencies in the microwave r...

Journal: :Nano letters 2012
I Bargatin E B Myers J S Aldridge C Marcoux P Brianceau L Duraffourg E Colinet S Hentz P Andreucci M L Roukes

We have developed arrays of nanomechanical systems (NEMS) by large-scale integration, comprising thousands of individual nanoresonators with densities of up to 6 million NEMS per square centimeter. The individual NEMS devices are electrically coupled using a combined series-parallel configuration that is extremely robust with respect to lithographical defects and mechanical or electrostatic-dis...

2016
J. L. Muñoz-Gamarra P. Alcaine A. Uranga N. Barniol

In this work we study the feasibility to obtain the smallest CMOS-NEMS resonator using a sub-100 nm CMOS technology. The NEMS resonators are defined in a top-down approach using the available layers of the 65 nm CMOS technology from ST Microelectronics. A combination of dry and wet etching is developed in order to release the NEMS in an in-house post-CMOS process. Two different NEMS resonators ...

Journal: :Nano letters 2010
Mo Li E B Myers H X Tang S J Aldridge H C McCaig J J Whiting R J Simonson N S Lewis M L Roukes

Miniaturized gas chromatography (GC) systems can provide fast, quantitative analysis of chemical vapors in an ultrasmall package. We describe a chemical sensor technology based on resonant nanoelectromechanical systems (NEMS) mass detectors that provides the speed, sensitivity, specificity, and size required by the microscale GC paradigm. Such NEMS sensors have demonstrated detection of subpart...

2009
Cordula Zeller Holger Fröhlich Achim Tresch

Nested effects models (NEMs) are a class of probabilistic models that were designed to reconstruct a hidden signalling structure from a large set of observable effects caused by active interventions into the signalling pathway. We give a more flexible formulation of NEMs in the language of Bayesian networks. Our framework constitutes a natural generalization of the original NEM model, since it ...

Journal: :Nano letters 2012
O Basarir S Bramhavar K L Ekinci

Development of efficient and sensitive motion transducers for arrays of nanoelectromechanical systems (NEMS) is important for fundamental research as well as for technological applications. Here, we report a single-wire nanomechanical transducer interface, which relies upon near-field optomechanical interactions. This multiplexed transducer interface comes in the form of a single-mode fiber tap...

Journal: :Proceedings of the IEEE 2003

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