检索结果-南通市图书馆

Optical wireless information transfer with nonlinear micromechanical resonators

Microsystems & Nanoengineering 2017年第1期3卷 163-168页

作者： joseph a.boales Farrukh Mateen Pritiraj Mohanty Department of Physics Boston University590 Commonwealth AvenueBostonMA 02215USA Department of Mechanical and Aerospace Engineering Boston University110 Cummington StreetBostonMA 02215USA

Wireless transfer of information is the basis of modern *** includes cellular,WiFi,Bluetooth,and GPS systems,all of which use electromagnetic radio waves with frequencies ranging from typically 100 MHz to a few ***,several long-standing challenges with standard radio-wave wireless transmission still exist,including keeping secure transmission of data from potential ***,we demonstrate wireless information transfer using a line-of-sight optical architecture with a micromechanical *** this fundamentally new approach,a laser beam encoded with information impinges on a nonlinear micromechanical resonator located a distance from the *** force generated by the radiation pressure of the laser light on the nonlinear micromechanical resonator produces a sideband modulation signal,which carries the precise information encoded in the subtle changes in the radiation *** this,we demonstrate data and image transfer with one hundred percent fidelity with a single 96-by-270μm silicon resonator element in an optical frequency *** mechanical approach relies only on the momentum of the incident photons and is therefore able to use any portion of the optical frequency band—a band that is 10000 times wider than the radio frequency *** line-of-sight architecture using highly scalable micromechanical resonators offers new possibilities in wireless *** to their small size,these resonators can be easily arrayed while maintaining a small form factor to provide redundancy and parallelism.

关键词： MEMS piezoelectricity radiation pressure wireless communication

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Micromechanical resonator with dielectric nonlinearity

引用

Microsystems & Nanoengineering 2018年第1期4卷 263-269页

作者： Farrukh Mateen joseph boales Shyamsunder Erramilli Pritiraj Mohanty Department of Mechanical and Aerospace Engineering Boston University110 Cummington StreetBostonMA 02215USA Department of Physics Boston University590 Commonwealth AvenueBostonMA 02215USA

Nonlinear response of dielectric polarization to electric field in certain media is the foundation of nonlinear ***,such nonlinearities are observed at high light intensities,achievable by laser,where atomic-scale field strengths exceeding 10^(6)–10^(8) V/m can be *** optics includes a host of fascinating phenomena such as higher harmonic frequency generation,sum and difference frequency generation,four-wave mixing,self-focusing,optical phase conjugation,and optical *** though nonlinear optics has been studied for more than five decades,such studies in analogous acoustic or microwave frequency ranges are yet to be ***,we demonstrate a nonlinear dielectric resonator composed of a silicon micromechanical resonator with an aluminum nitride piezoelectric layer,a material known to have a nonlinear optical *** a novel multiport approach,we demonstrate second and third-harmonic generation,sum and difference frequency generation,and four-wave *** demonstration of a nonlinear dielectric resonator opens up unprecedented possibilities for exploring nonlinear dielectric effects in engineered structures with an equally broad range of effects such as those observed in nonlinear ***,integration of a nonlinear dielectric layer on a chip-scale silicon micromechanical resonator offers tantalizing prospects for novel applications,such as ultra high harmonic generation,frequency multipliers,microwave frequency-comb generators,and nonlinear microwave signal processing.

关键词： dielectric optics nonlinear

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

镫骨手术的各种问题

引用

山西医药杂志 1965年第2期 72-74页

作者： PhilipH boales 梁鴻飞

于此短文中提出讨论四个问题。第一,对患者固定的镫骨板手术选择问题。镫骨撼动术曾被某些耳科医师认为是安全的手术,因而为耳硬化症患者进行外科治疗时,常常提倡第一步先行镫骨撼动术,我意以为不然,其理由如下。 1、镫骨撼动术有严重... 详细信息

于此短文中提出讨论四个问题。第一,对患者固定的镫骨板手术选择问题。镫骨撼动术曾被某些耳科医师认为是安全的手术,因而为耳硬化症患者进行外科治疗时,常常提倡第一步先行镫骨撼动术,我意以为不然,其理由如下。 1、镫骨撼动术有严重损伤砧骨之危险,致使进行其他手术时更加困难,Brownlie Smith氏在其国内于近来的论文中曾强调此点。 2、镫骨撼动术可以损伤内耳。Ivstam氏曾指出70％患者于术后有位置性眼球震颤及骨

关键词：砧骨切除术血液粘膜动脉解剖学生物膜耳硬化症耳疾病骨脚耳蜗功能耳蜗性聋前庭窗卵圆窗

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：