ABSTRACT
Equations(2)and(3)predictaconstantcrossoverfrequencyvs.conductivity relationship.However,theresultsindicatethattheparticle'snetconductivityriseswith mediumconductivity.Anapproximatefittothedatacanbemadebyaddinganadditional conductivitycomponenttothesurfacechargewhichcanbewrittenasfollows:
whereK-1istheDebyelength.ThisequationcanbesuccessfullyusedtopredicttheDEP responsesoflatexsphereswithdiametersintherange93-557mn,andalsoHerpesviruses[9] suspendedinKClsolutions.