[PDF下载] 微机电器件设计.制造及计算机辅助设计

Chapter1　Introduction ………………………………………………………………………… 1
1．1　ConceptofMEMS ……………………………………………………………………… 1
1．2　DevelopmentofMEMS ………………………………………………………………… 4
1．3　MEMSCAD …………………………………………………………………………… 9
Chapter2　BasictheoryofMEMS …………………………………………………………… 12
2．1　TheoryofelectrostaticMEMScombactuators …………………………………… 12
2．1．1　Introduction ……………………………………………………………………… 12
2．1．2　Operatingprinciples …………………………………………………………… 13
2．1．3　Platecapacitortheoryinidealcondition ……………………………………… 14
2．1．4　ThemodifiedmodelofMEMSplatecapaciator ……………………………… 17
2．1．5　Calculationofelectrostaticcombdrivingforceinidealsituation …………… 24
2．1．6　Weakcapacitancedetectionmethodofelectrostaticcombdrive …………… 26
2．2　RelevanttheoreticalcalculationsfortheMEMScantileverbeam ………………… 34
2．2．1　Introduction ……………………………………………………………………… 34
2．2．2　Theoreticalcalculationmethodforcantileverbeam ………………………… 35
2．2．3　RelevanttheoreticalcalculationofaxialtensileandcompressiveonsingleGend
clampedbeams ………………………………………………………………… 36
2．2．4　RelatedtheoreticalcalculationsofdoubleGendclampedbeamsaxialtension
andcompression ………………………………………………………………… 40
2．3　MembranetheoryofMEMS ………………………………………………………… 47
2．3．1　Theoryofclampedaroundcirculardiaphragm ………………………………… 48
2．3．2　Theoryofclampedaroundrectangularflatdiaphragm ……………………… 49
References …………………………………………………………………………………… 52
Chapter3　MEMSmaterials …………………………………………………………………… 53
3．1　Monocrystallinesilicon ……………………………………………………………… 53
3．1．1　Introduction ……………………………………………………………………… 53
3．1．2　Crystalorientationofmonocrystallinesilicon ………………………………… 55
3．2　Polycrystallinesilicon ………………………………………………………………… 64
3．3　Silica …………………………………………………………………………………… 66
3．4　Piezoelectricmaterials ………………………………………………………………… 67
3．4．1　Piezoelectriceffectandinversepiezoelectriceffectofmaterials …………… 67
3．4．2　Quartzcrystal …………………………………………………………………… 68
3．4．3　Piezoelectricceramics …………………………………………………………… 73
3．5　OtherMEMSmaterials ……………………………………………………………… 75
3．6　Summary ……………………………………………………………………………… 76
Chapter4　MEMStechnology ………………………………………………………………… 77
4．1　MEMSlithographyprocess ………………………………………………………… 78
4．2　KeytechnologyofMEMSlithographyprocess …………………………………… 80
4．2．1　Wafercleaning …………………………………………………………………… 80
4．2．2　Siliconoxidation ………………………………………………………………… 80
4．2．3　Spincoatingprocess …………………………………………………………… 87
4．2．4　Prebaking ………………………………………………………………………… 90
4．2．5　Exposure ………………………………………………………………………… 92
4．2．6　Development ……………………………………………………………………… 94
4．2．7　Hardening ………………………………………………………………………… 96
4．2．8　FabricationoftheSiO2 window ………………………………………………… 97
4．3　SubsequentprocessofMEMS ……………………………………………………… 98
4．3．1　Bulksilicontechnology ………………………………………………………… 98
4．3．2　Surfacesiliconprocess ………………………………………………………… 103
4．3．3　LIGAtechnology ……………………………………………………………… 104
4．3．4　Sputteringtechnology ………………………………………………………… 105
4．3．5　LiftGoffprocess ………………………………………………………………… 107
4．4　Filmpreparationtechnology………………………………………………………… 107
4．5　Bondingprocess ……………………………………………………………………… 108
4．5．1　Anodicbondingprocess………………………………………………………… 109
4．5．2　SiliconGsilicondirectbonding ………………………………………………… 110
4．5．3　Metaleutecticbonding ………………………………………………………… 113
4．5．4　Coldpressureweldingbonding ……………………………………………… 114
4．6　Engineeringexamplesofcombinationformultipleprocessestofabricatethe
MEMSdevice ………………………………………………………………………… 115
4．6．1　Introduction …………………………………………………………………… 115
4．6．2　EngineeringexampleoffabricationprocessforresonantMEMSgyroscope
…………………………………………………………………………………… 115
4．6．3　EngineeringexampleofelectromagneticmicroGmotorproductionprocess
…………………………………………………………………………………… 118
4．7　Summary ……………………………………………………………………………… 124
References…………………………………………………………………………………… 125
Chapter5　Frictionwearandtearundermicroscale ……………………………………… 126
5．1　OffGchiptestingmethodformicrofriction ………………………………………… 127
5．1．1　MicroGtribologytestwiththepinGonGdiscmeasuringmethod ……………… 127
5．1．2　MicroGtribologytestwithAFM ……………………………………………… 128
5．1．3　MicroGtribologytestwithspecialmeasuringdevice ………………………… 130
5．2　OnGchiptestingmethodformicrofriction ………………………………………… 132
5．2．1　OnGchiptestingmethodactuatedbyelectrostaticforce …………………… 132
5．2．2　OnGchipmicroGfrictiontestingmethodusingthemechanismcharactersof
thebimorphmaterial…………………………………………………………… 139
5．3　ExampleofthedesignforanonGchipmicroGfrictionstructure ………………… 141
5．3．1　Structureandworkingprinciple ……………………………………………… 141
5．3．2　Calculationofpertinenttheory ……………………………………………… 142
5．3．3　Technologicalanalysisofstructuraldesign ………………………………… 148
5．3．4　Testingresultsanddataanalysis……………………………………………… 152
5．3．5　ResearchandtestofwearproblemofMEMSdevices ……………………… 161
5．4　Summary ……………………………………………………………………………… 165
References…………………………………………………………………………………… 165
Chapter6　MEMStestingtechnologyandengineeringapplication ………………………… 169
6．1　Accelerationmeasurementandcorrespondingsensors …………………………… 169
6．1．1　Workingprincipleoftheaccelerationsensorandtheclassification ……… 170
6．1．2　Capacitivesiliconmicromechanicalaccelerometer …………………………… 172
6．1．3　Piezoresistivesiliconmicromechanicalaccelerometer ……………………… 173
6．1．4　Piezoelectricmicromechanicalaccelerometer ………………………………… 174
6．1．5　ResonantsiliconMEMSaccelerometer ……………………………………… 175
6．2　Angularspeedmeasurementandcorrespondingsensors ………………………… 177
6．2．1　Workingprinciple ……………………………………………………………… 177
6．2．2　DevelopmentofMEMSgyroscope …………………………………………… 178
6．2．3　Classificationofmicromechanicalgyroscope ………………………………… 188
6．3　Pressuremeasurementandcorrespondingsensors ……………………………… 190
6．3．1　Workingpincinple ……………………………………………………………… 190
6．3．2　Resonantsiliconmicromechanicalpressuresensoranditsdevelopment … 193
6．4　MeasurementofmicroGtorque ……………………………………………………… 198
6．4．1　Introduction …………………………………………………………………… 198
6．4．2　Workingprincipleofnoncontactmethod …………………………………… 199
6．4．3　Theoreticalcalculation ………………………………………………………… 200
6．4．4　Correspondingequipmenttorealizethenoncontactmethod ……………… 205
6．4．5　Experimentresultanddiscussion …………………………………………… 209
6．5　Microscopicmorphologytestingmethod ………………………………………… 211
6．6　Summary ……………………………………………………………………………… 212
References…………………………………………………………………………………… 212
Chapter7　Applicationexamplesofthefiniteelementmethodinthedesignof
MEMSdevices …………………………………………………………………… 218
7．1　Importantconceptsofthesoftware………………………………………………… 218
7．2　IntroductionoftheAnsyssoftwareinterface……………………………………… 220
7．3　ThecoordinatesysteminAnsys …………………………………………………… 221
7．4　Engineeringexamples ……………………………………………………………… 226
7．4．1　StaticanalysisofsingleGclampedbeam ……………………………………… 226
7．4．2　ModalanalysisofdoubleGclampedbeam ……………………………………… 245
7．4．3　CapacitanceanalysisofMEMSelectrostaticcombfingersdrive …………… 257
7．4．4　Fatiguestrengthcalculationexample ………………………………………… 264
7．5　Summary ……………………………………………………………………………… 272