简介：可能是由于圣诞节和新年的原因，2004年的最后一期《CHIP》在2005年1月份才到达编辑部；也可能是DVD刻录机的价格一路走低，目前已成为光储设备的主流产品，《CHIP》在本期杂志上制作了一个内容相当丰富的DVD刻录专题——“DiebestenRohlingeundBrenner”(最好的盘片和刻录机)。

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简介：AsinglemodehybridⅢ-Ⅴ/siliconon-chiplaserbasedontheflip-chipbondingtechnologyforon-chipopticalinterconnectionisdemonstrated.AsinglemodeFabry-Perotlaserstructurewithmicro-structuresonanInPridgewaveguideisdesignedandfabricatedonanInP/AlGaInAsmultiplequantumwellepitaxiallayerstructurewaferbyusingi-linelithography.Then,asiliconwaveguideplatformincludingalasermountingstageisdesignedandfabricatedonasilicon-on-insulatorsubstrate.Thesinglemodelaserisflip-chipbondedonthelasermountingstage.Thelasinglightisbutt-couplingtothesiliconwaveguide.Thelaserpoweroutputfromasiliconwaveguideis1.3mW,andthethresholdis37mAatroomtemperatureandcontinuouswaveoperation.

简介：在这个工作，Ti-6Al-4V合金的直角的切实验以不同切的速度(10160m/min)被进行并且喂率(20160m/rev)。工具薄片接触长度被工具耙子脸的轨道测量；同时，局部性、全面的薄片变丑引起的薄片形态学被分割和薄片压缩比率的度分别地描绘。这些参数根据分割的薄片形态学被分析并且计算。另外，三就全面薄片变丑和局部性的变丑而言修改了模型断热砍乐队被建议，并且模型的常数由基因算法优化是计算的。就全面、局部性的芯片变丑而言，工具接触长度的值和变化趋势在这三预言模型与试验性的结果同意了很好。

简介：Thetrafficbufferingproblemsintheethernetoversynchronousdigitalhierarchy(EOS)areintroducedandanalyzed.Differentsolutionsarealsopresentedindetail.SynchronousDRAM(SDRAM)isusedasoff-chipbuffertostore-and-retransmissionethernetframes.Anewandeasycontroldesignisintroducedhere.Thebufferareasizeonchipisgreatlyreducedandthepowerdissipationislowedatthesametime.

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简介：Thenetworks-on-chip(NoC)communicationhasanincreasinglylargerimpactonthesystempowerconsumptionandperformance.Emergingtechnologies,likesurfacewave,arebelievedtohavelowertransmissionlatencyandpowerconsumptionovertheconventionalwirelessNoC.Therefore,thispaperstudieshowtooptimizethenetworkperformanceandpowerconsumptionbygivingthepacket-switchingfabricandtrafficpatternofeachapplication.Comparedwiththeconventionalmethodofwire-linked,whichaddswirelesstransceiversbyusingthegeneticalgorithm(GA),theproposedmaximaldecliningsortingalgorithm(MDSA)caneffectivelyreducetimeconsumptionbyasmuchas20.4%to35.6%.Wealsoevaluatethepowerconsumptionandconfigurationtimetoprovetheeffectiveoftheproposedalgorithm.

简介：Thequestforenergyefficiencyhasgrowingimportanceinhighperformancemany-coresystems.However,incurrentpractices,thepowerslacks,whicharethedifferencesobservedbetweentheinputpowerbudgetandtheactualpowerconsumedinthemany-coresystems,aretypicallyignored,thusleadingtopoorenergyefficiency.Inthispaper,weproposeaschemetoeffectivelypowertheon-chipcommunicationsbyexploitingtheavailablepowerslackthatistotallywastedincurrentmany-coresystems.Asso,thedemandforextraenergyfromexternalpowersources(e.g.,batteries)isminimized,whichhelpsimprovetheoverallenergyefficiency.Inessence,thepowerslackisstoredateachnodeandtheproposedroutingalgorithmusesadynamicprogrammingnetworktofindthegloballyoptimalpath,alongwhichthetotalenergystoredonthenodesisthemaximum.Experimentalresultshaveconfirmedthattheproposedscheme,withlowhardwareoverhead,canreducelatencyandextraenergyconsumptionby44%and48%,respectively,comparedwiththetwocompetingroutingmethods.IndexTerms?Adaptiverouting,dynamic

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简介：Modulatingboththeclockfrequencyandsupplyvoltageofthenetwork-on-chip(NoC)duringruntimecanreducethepowerconsumptionandheatflux,butwillleadtotheincreaseofthelatencyofNoC.Itisnecessarytofindatradeoffbetweenpowerconsumptionandcommunicationlatency.Soweproposeananalyticallatencymodelwhichcanshowustherelationshipofthem.TheproposedmodeltoanalyzelatencyisbasedontheM/G/1queuingmodel,whichissuitablefordynamicfrequencyscaling.Theexperimentresultsshowthattheaccuracyofthismodelismorethan90%.

简介：众所周知，中国芯片厂商瑞芯微推出的ROCKCHIP芯片具有支持MPEG4和AVI的视频文件播放的真正MP4娱乐功能。最近，清华同方推出一款搭载ROCKCHIP芯片的播放器——T＆F-88。

简介：Reflectorsareanessentialcomponentforon-chipintegratedphotonics.Here,weproposeanewmethodfordesigningreflectorsontheprevalentthin-film-on-insulatorplatformbyusinggenetic-algorithmoptimization.Insimulation,thedesignedreflectorwithafootprintofonly2.16μm×2.16μmcanachieve~97%reflectivityand1dBbandwidthaswideas220nm.Thestructureiscomposedofrandomlydistributedpixelsandishighlyrobustagainsttheinevitablecornerroundingeffectindevicefabrication.Inexperiment,wefabricatedon-chipFabry–Perot(FP)cavitiesconstructedfromoptimizedreflectors.ThoseFPcavitieshaveintrinsicqualityfactorsof>2000withthehighestvaluebeyond4000inaspectralwidthof200nm.ThereflectivityfittedfromtheFPcavityresonancesis>85%intheentirewavelengthrangeof1440–1640nmandisbeyond95%atsomewavelengths.ThefabricationprocessesareCMOScompatibleandrequireonlyonestepoflithographyandetch.Thedevicescanbeusedasastandardmoduleinintegratedphotoniccircuitryforwideapplicationsinon-chipsemiconductorlaserstructuresandopticalsignalprocessing.

简介：Immisciblefluidflowisfrequentlyfoundinresourcerecoveryorsoilremediation.Theflowpatternintheporousmediaisaffectedbythewettabilityofporesurface.Inthisstudy,quartzsubstratesandmicrofluidicchipsaretreatedbysilicananoparticles(SNP)andtriethoxy(octyl)silane(TES)tofabricatethewater-wetandoil-wetsurfaces.Thewettabilityofthetreated-surfaceismeasuredintermofcontactangleforseveralcombinationsofsurroundingfluidandaliquiddroplet.Theeffectofthewettabilityonthefluidflowpatternisexploredbyinjectingoilandwateralternatelyintothesurface-treatedmicrofluidicchips.TheresultsrevealthattheSNP-coatedquartzsubstrateshowsstrongwater-wetpropertyandtheTEScoatingmakeswater-repellent/oil-wetsurfaces.Inaddition,itisfoundthatthemaximumandminimumoilandwatersaturationduringalternateinjectionofoilandwaterdependsonthesurfacewettabilityofthemicrofluidicchips.Thecharacteristicsofthepore-scalefluidflowpatternarealsodescribed.

简介：Wereportthefirstobservation,tothebestofourknowledge,ofsum-frequencygenerationinon-chiplithiumniobatemicrodiskresonators.Thesum-frequencysignalinthe780nmband,distinctinwavelengthfromsecondharmonicsignals,wasobtainedinlithiumniobatemicroresonatorsunderthepumpoftwoindividual1550nmbandlasers.Thesum-frequencyconversionefficiencywasmeasuredtobe1.4×10-7mW-1.Thedependenceoftheintensitiesofthenonlinearsignalsonthetotalpumppowerandthewavelengthofonepumplaserwasinvestigatedwhilefixingthewavelengthoftheother.Thisworkpavesthewayforapplicationsofon-chiplithiumniobatemicrodiskresonatorsrangingfrominfraredsingle-photondetectiontoinfraredspectroscopy.

简介：采用ChiP封装的DCM是一款隔离式稳压DC—DC转换器，可从宽泛的未稳压输入生成隔离式DC输出。这款DCM转换器采用高频率零电压开关（ZVS）拓扑，可在整个输入范围始终如一地提供高效率。模块化DCM转换器和下游DC—DC产品支持高效率配电，可在各种未稳压电源与负载点之间实现优异的电源系统性能和连接。

简介：Beingdirectedagainettwokinksofnoiseinopticalfibersensors,asim-pleandeffectivemethodofautomaticcompensationforopticalfibersensorsispresented.Notonlytheunstabilityeffectoflightsource,butalsozerodriftofphotoelectronicde-vices,canbeeliminatedorenormouslyrestranedwiththeaidofthismethod.Inanotherway,byusingsingle-chipmrcrocomputer,theopticalfibersensorsystemfabricatediscaonnetedtoacopmuternetworkstorealizeanautomaticcompensation.

简介：Thereisarapidlygrowingdemandtousesiliconandsiliconnitride（Si3N4）integratedphotonicsforsensingapplications,rangingfromrefractiveindextospectroscopicsensing.BymakinguseofadvancedCMOStechnology,complexminiaturizedcircuitscanbeeasilyrealizedonalargescaleandatalowcostcoveringvisibletomid-IRwavelengths.InthispaperwepresentourrecentworkonthedevelopmentofsiliconandSi3N4-basedphotonicintegratedcircuitsforvariousspectroscopicsensingapplications.Wereportourfindingsonwaveguide-basedabsorption,andRamanandsurfaceenhancedRamanspectroscopy.Finallywereporton-chipspectrometersandon-chipbroadbandlightsourcescoveringverynear-IRtomid-IRwavelengthstorealizefullyintegratedspectroscopicsystemsonachip.