简介：Inthispaper,wepresentahighspeedautofocussystemformicrosystemapplicationsanddesignalook-up-tablebasedautofocusingalgorithmforapplicationswhenatargetobjectisalwaysvisible,e.g.,manufacturingpartswithalignmentfiducials.Weperformanevaluationof24focusmeasurestoverifythatwhichfocusmeasureisthebestforthelook-up-tablebasedmethod.Fromtheevaluation,wefindthattheChebyshevmoments-basedfocusmeasure(CHEB)isthemostsuitable.Furthermore,wealsodevelopalook-up-tablebasedautofocussystemthatusesCHEBasthefocusmeasure.Intrainingphase,weofflineconstructatablefromtrainingimagesofanobjectthatarecapturedatseverallensdistances.Eachentryoftableconsistsoffocusmeasurecomputedfromimageandlensdistance.Inworkingphase,givenaninputimage,thealgorithmfirstcomputesthefocusmeasureandthenfindsthebestmatchfocusmeasurefromthetableandlooksupthecorrespondinglenspositionformovingitintothein-focusposition.Ouralgorithmcanperformautofocusingwithinonly2stepsoflensmoving.Theexperimentshowsthatthesystemcanperformhighspeedautofocusingofmicroobjects.

简介：高温度液体被注入微尺寸毛状并且它的轻繁殖行为被调查。我们集中于抽方法的二不同液体。第一个方法能把高温度液体听输入微尺寸由使用一个高压力差别系统毛状。在抽以后，与光搬运人一起连接的单个模式纤维(SMF)基于微波interferometry(OCMI)系统被用来测量不同液体听层次在微尺寸毛状。第二个方法能把房间温度引擎油输入由使用注射泵毛状。当液体被输入时，这个方法能避免空气水泡毛状。

简介：Aneffectivedesignmethodoffreeformmicrolensarrayispresentedforshapingvariedlaserbeamsintoprescribedrectangularillumination.Thevariableseparationmappingisappliedtodesignconcavefreeformsurfacesforconstructingafreeformlensarray.Severaldedicatedexamplesshowthatthedesignedfreeformopticallensarraycanachieveaprescribedrectangularilluminationpattern,especiallywithoutconsideringtheinitialstatesofincidentlaserbeams.Bothhighcollectionefficiencyandgoodspatialuniformitycanbeavailablesimultaneously.Toleranceanalysisisalsoperformedtodemonstratethatthisopticaldevicecanwellavoidfabricatingdifficultyinactualapplications.

简介：Asimplemethodtofabricateone-dimensional(1-D)andtwo-dimensional(2-D)orderedmicro-andnano-scalepatternsisdevelopedbasedontheoriginalmastersfromopticaldiscs,usingnanoimprinttechnologyandsoftstamps.Polydimethylsiloxane(PDMS)wasusedtoreplicatethenegativeimageofthe1-DgratingpatternonthemastersofCD-R,DVD-RandBD-Ropticaldiscs,respectively,andthenthe1-DpatternononeofthePDMSstampswastransferredtoablankpolycarbonate(PC)substratebynanoimprint.The2-DorderedpatternswerefabricatedbythesecondimprintingusinganotherPDMSstamp.Different2-DperiodicpatternswereobtaineddependingonthePDMSstampsandtheanglebetweenthetwotimesofimprints.Thismethodmayprovideawayforthefabricationofcomplex2-Dpatternsusingsimple1-Dmasters.

简介：Room-temperatureterahertz（THz）detectorsindicateagreatpotentialintheimagingapplicationbecauseoftheirreal-time,compactbulk,andwidespectralbandrespondingcharacteristics.THzdetectorswithdifferentdimensionsbasedonamicro-bridgestructurehavebeendesignedandfabricatedtogetoptimizedmicro-bolometerparametersfromthetestresultsofmembranedeformation.Ananostructuredtitanium（Ti）thinfilmabsorberisintegratedinthemicro-bridgestructureoftheVOxmicro-bolometerbyacombinedprocessofmagnetronsputteringandreactiveionetching（RIE）,anditsimprovementofTHzabsorptionisverifiedbyanopticalcharacteristicsmesurement.Continuous-waveTHzdetectionandimagingaredemonstratedbyusinga2.52THzfarinfraredCO2laseranda320×240vanadiumoxidemicro-bolometerfocalplanearraywithanoptimizedcellstructure.Withthisdetectingsystem,THzimagingofmetalconcealedinawipingclothandanenvelopeisdemonstrated,respectively.