MULTI-SWITCHABLEMICRO DISPENSERCHIP-SETFOR PORTABLEHEALTH CARE DEVICES

system that hasnodeadvolume. Pneumatic (airpressure drive )microdispenser system without anydeadvolume ofsample wasdeveloped successfully. The102.OPERATIONPRINCIPLEOF directional switching valve chipandthesampling chipasthe PNEUMATICMICRO DISPENSERSYSTEM componentofthisdispenser weredeveloped successfully. The sampling chipcandivide liquid every1 L or0.5gL without any Microchemical devices needdispensing devices that can deadvolumeofsamplebydecompressing andthecompressing air.Thissimpleoperation iscausedbytheoriginal novel efficiently divide asample inside thechip. ArepobyKuwata detecting methodofmicrofluid andcheckvalves ofhatshape.etal.[13] describes anovelsliding microdispensing device Theswitching valve chipselects theoutlet thatinjects the thatiscapable ofdispensing liquids withnanoliter precision. dispensed sample. Thischiphasaspecial rotary mechanismHowever, asignificant volumeofliquid remains inthedevice withthesilicone rubber leak-preventions andtheprecise auto-whentheliquid isdivided. Wespeculated that ahigh-powered positioning mechanism, Thischip canswitch tenoutlets bybuilt-actuator wasneeded toslide theglass andproposed anairinmiclro solenoid (1IN 6VDC)undelrhigh leakage plressulre*