简介：AreviewontheresearchofMicroElectromechanicalSystems(MEMS)technologybasedbiomimeticciliaispresented.Biomimeticcilia,enabledbytheadvancementofMEMStechnology,havebeenunderdynamicdevelopmentforthepastdecade.AfterabriefdescriptionofthebackgroundofciliaandMEMStechnology,differentbiomimeticciliaapplicationsarereviewed.Biomimeticciliamicro-actuators,includingmicromachinedpolyimidebimorphbiomimeticciliamicro-actuator,electro-staticallyactuatedpolymerbiomimeticciliamicro-actuator,andmagneticallyactuatednanorodarraybiomimeticciliamicro-actuator,arepresented.Subsequentlymicromachinedunderwaterflowbiomimeticciliamicro-sensorisstudied,followedbyacousticflowmicro-sensor.ThefabricationoftheseMEMS-basedbiomimeticciliadevices,characterizationoftheirphysicalproperties,andtheresultsoftheirapplicationexperimentsarediscussed.

简介：Anewmethodforirisidentificationbasedonmultiwaveletsisproposed.Bymeansofthepropertiesofmultiwavelets,suchasorthogonality,symmetry,vanishingmomentsandapproximationorder,theiristexturecanbesimplypresented.Abriefoverviewofmuhiwaveletsispresentedatfirst.Irisidentificationsystemandiristexturefeaturepresentationandrecognitionbasedonmultiwaveletsareintroducedsubsequently.Andtheexperimentindicatesthevalidityofthismethodfinally.

简介：Thenaturalworldspentbillionsofyearsinsolution-findingduringevolution,whichcouldbenefitTechnology.Howdoweputthatinanutshell?Biologicalsystemsaremorecomplexthanthemostcomplexcurrenttechnology.Anygivenfunctionandeffectaresimultaneouslycoordinatedandlinkedwithothersatmanylevelsofbiologicalorganisation-fromcellorganelletoorganism,topopulationandecosystem.Technologydoesnothavetoolstodealwiththecomplexityand"goalintendedness"oflivingsystems.Butlimitsforinteractionexistonbothsides-Biologicalscienceitselfisalsotooempiricalandnotmatureenoughtoprovideasolidbaseforcorrelatinglivingwithtechnicalsystems.Movingtowardsasynthesis,whereengineerscanutilizethevastamountofavailablebiologicaldata,wesuggestusingatoolcalled"TheoryofInventiveProblemSolving"(TRIZ)andclarifyingsomeimportantmethodologicalissues,whichhavenotpreviouslybeenrecognisedinbionicengineering:1)Requirenentformoreappropriatedefinitionsof"system","effect","function","law"and"rule".2)Requirementforunderstandingorevenmeasuringthedegreeofcontradictionoranalogybetweenfunctionsinbiologicalandartificialand/ornon-livingengineeringsystem-thereisnosimpledirectcorrelationbetweenwhatengineersfindusefulandwhatbiologydoes.

简介：Theterms"science"(HanyuPinyin:Kēxué)and"technology"(Jìshù),inwesternlanguages,areusu-allyusedseparatelywithdifferentmeaningsorto-getheras"scienceandtechnology".However,theyareoftenmentionedas"KēxuéJìshù",orevenabbre-viatedas"sci-tech(Kējì)"inChina(ItisusedinasimilarwayinJapan).

简介：Inthispaper,awildboarheadwastakenasthebionicresearchobjectforthedevelopmentofnewridgers,akindofplough.Thereverseengineeringtechnologywasadoptedtoobtainthesurfacegeometricalinformationofthehead.Severalthree-dimensional(3D)pointcloudsoftheheadwerecapturedfirstusinganon-touchlaserscanner,andanintegratedpointcloudwasgeneratedbyaligningthesepointcloudsusingUG/Imageware.Then,thedigitalsurfacemodeloftheheadwasrebuiltbymeansofCATIA.Thecharacteristiccurvesofthesurfacemodelwereanalyzed.Theresultsshowthattheaverageerrorbetweentherebuiltsurfaceandthepointcloudis?0.431mm.Themaxcurvatureoftheridgeontheneboftheheadis0.187mm?1,andthemaxandminGausscurvaturesonthesurfaceare0.008mm?2and?0.002mm?2.Thesegeometricalinformationaretheessentialparametersforbiomimeticsstudyoftheridger.

简介：ItisoutofquestionthatChinahasachievedconsiderableadvancementsinscienceandtechnology.Theworldwidespreadof"MadeinChina"thatgetsonthewesterncountries'nervesisagoodillustration.However,althoughcomparativelybetterthansomeotherdevelopingcountries,wehavetofacethesituationthatscienceandtechnologyinsuchagreatnationasChinaisstillseriouslylaggedbehind,lackinggreatbreakthroughsandtop-rankingmastersandleaders.That'swhywefeeluneasyinfrontofinternationalcolleagues.

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