نتایج جستجو برای: size dependent nems

تعداد نتایج: 1209578  

2001
Markus Zahn

Magnetic field based micro/nanoelectromechanical systems (MEMS/NEMS) devices are proposed that use 10 nm diameter magnetic particles, with and without a carrier fluid, for a new class of nanoduct flows, nanomotors, nanogenerators, nanopumps, nanoactuators, and other similar nanoscale devices. A few examples of macroscopic ferrohydrodynamic instabilities that result in patterns, lines, and struc...

2010
Sally Honeycutt Erica Davis Margaret Clawson Karen Glanz

INTRODUCTION Researchers believe that nutrition environments contribute to obesity and may explain some health disparities. The Nutrition Environment Measures Surveys (NEMS) are valid and reliable observational measures of the nutrition environment. This article describes the dissemination of the measures, including the development, implementation, and evaluation of training workshops, and a fo...

2005
Bradley J. Nelson Lixin Dong Arunkumar Subramanian Dominik J. Bell

Robotic manipulation at the nanometer scale is a promising technology for structuring, characterizing and assembling nano building blocks into nanoelectromechanical systems (NEMS). Combined with recently developed nanofabrication processes, a hybrid approach to building NEMS from individual carbon nanotubes (CNTs) and SiGe/Si nanocoils is described. Nanosensors and nanoactuators are investigate...

2016
Marilyn Tseng Kelsey DeGreef Madison Fishler Rachel Gipson Kelly Koyano Dawn B. Neill

INTRODUCTION University campuses offer an opportunity to study the extent to which modifying the food environment influences eating, but in-depth characterizations of campus food environments are needed to identify potential targets for intervention. The objective of this project was to describe the availability, accessibility, and quality of healthful food choices in dining venues and food sto...

Journal: :American journal of preventive medicine 2015
Susan N Partington Tim J Menzies Trina A Colburn Brian E Saelens Karen Glanz

INTRODUCTION The community food environment may contribute to obesity by influencing food choice. Store and restaurant audits are increasingly common methods for assessing food environments, but are time consuming and costly. A valid, reliable brief measurement tool is needed. The purpose of this study was to develop and validate reduced-item food environment audit tools for stores and restaura...

Journal: :Advanced Engineering Materials 2023

The miniaturization of antennas has been a significant challenge in the field electronics and telecommunications. In recent years, mechanically driven thin-film bulk acoustic resonator (FBAR) magnetoelectric (ME) have emerged as promising solution, demonstrating superior capabilities compared to conventional state-of-the-art compact antennas. While nanoelectromechanical systems (NEMS) FBAR ME e...

Journal: :IOP Conference Series: Materials Science and Engineering 2021

Abstract Nano/NEMS sensors have emerged from MEMS technology. Nano got lot of applications in medical and health care applications. attributes which make them very unique special, such as: small size, low mass, high sensitivity cost production. In this paper we present optimization nano capacitive pressure sensor dimensions for Capacitive are well suited sensing Typically, field involve levels ...

Journal: :Nanophotonics 2022

Abstract Ultraviolet (UV) electro-optic modulation system based on graphene-plasmonic metamaterials nanomechanical (NEMS) with superlubricity is investigated. Due to the strong optical absorption intensity of graphene in UV region and combination metamaterial structure surface plasmons, depth NEMS modulator approaches as high 8.5 times compared counterpart visible light region. Meanwhile, signi...

Journal: :Chest 1998
R Moreno D Reis Miranda

OBJECTIVE To test the use of a human resources-based classification of levels of care of ICUs; to evaluate the match between planned vs operative levels of care on a large sample of European ICUs. DESIGN Analysis of the database of a multicentric, multinational, prospective cohort study, involving 89 ICUs from 13 European areas. SETTING Database of EURICUS-I. METHODS Provision of resource...

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