简介:TheMOBILEisalogicelementrealizingthemonostable-bistabletransitionofacircuitthatconsistsoftworesonanttunnelingtransistors--theresonanttunnelingdiodes(RTDs)connectedinseries.Ithasseveraladvantagesincludingmultipleinputsandmultiplefunctions.Inthispaper,byconnectingaheterojunctionphototransistor(HPT)withtheMOBILE,anoveloptoelectronicfunctionaldevicecanbegot,whichpresentsthefunctionofbethphotocurrentswitchingandphotocurrentlatching.Thesebehaviorshavebeendemonstratedforthefirsttimebysimulatingexperimentsandcircuitsimulations,withRTDsfirstlymanufacturedinChina.Researchindicatesthatthenovelphoto-controlledMOBILEhasthesamelogicfunctionsasconventionalelectricalMOBILEexceptforwithlightasaninputsignal.
简介:Inthispaper,theequilibriumsurfacetensionandthedynamicsurfacetensionofaqueousTritonX100solutionattemperature25℃weremeasuredbymeansofWilhelmyplatemethodandmaximalbubblepressuremethodrespectively.Thedeterminedcriticalmicellarconcentration(cmc)ofTritonX-100at25℃is2.2×10^-4mol/dm^3.TheadsorptionmechanicsofTritonX-100atair/solutionwasdetermined.Forthesubmicellarconcentrationsitisdiffusion-controlled.Thediffusioncoefficientwascalculatedfromtheexperimentaldataintherangeofshortlimit.Intherangeoflongtimeadsorption,thesubsurfaceconcentrationisfittedfromthemeasureddynamicsurfacetensions.
简介:本文主要给出了方程y″+A(t)y=0(1)在A(t)<0情况下解有界的否定判据,并且利用[1]中引理和Bellman不等式,在减弱条件的情况下证明了方程x″+f(x)x′+h(x)=e(t)的解的有界性及有关(1)的推广的形式。