Tsis ntev los no, chemists ntawm Michigan State University tau pom cov nyhuv piezoelectric hauv cov kua thawj zaug. Pab neeg tshawb fawb tau taw qhia tias cov ntaub ntawv piezoelectric kua yog ib puag ncig zoo dua li cov khoom siv piezoelectric thiab xav kom "qhia lawv cov txuj ci" hauv ntau qhov chaw. Cov kev tshawb fawb cuam tshuam tau luam tawm nyob rau hauv qhov tseeb qhov teeb meem ntawm "Physical Chemistry Letters".
Txog tam sim no, tag nrho cov ntaub ntawv piezoelectric tau ua tiav. Cov ntaub ntawv zoo li no yog hu ua piezoelectric vim tias lawv muaj cov cuab yeej tuav cov nqi hluav taws xob nyob rau hauv ib txwm muaj thiab tso nws nyob rau hauv siab. Cov khoom piezoelectric tam sim no tau siv dav hauv cov khoom xws li cov khoom siv sonar, cov khoom siv guitar thiab cov neeg hais xov tooj ntawm tes. Nyob rau hauv txoj kev tshawb no tshiab, Michigan State University chemist Iqbal Hussein thiab lwm tus neeg nrhiav pom thawj piezoelectric cov ntaub ntawv uas muaj nyob rau hauv cov kua daim ntawv ntawm chav tsev kub.
Cov khoom siv ua kua piezoelectric uas tau tshawb pom tshiab yog cov kua ionic ua los ntawm cov ntsev ntawm cov organic cations saj zawg zog nrog asymmetry thiab tsis muaj zog ua haujlwm anions nrog symmetry. Hluav taws xob tsim nyob rau hauv cov kua ionic, thiab cov kws tshawb fawb pom tias thaum lub piston siv lub zog rau cov qauv ntawm cov kua ionic hauv lub tog raj kheej, cov hluav taws xob raug tso tawm. Lawv kuj pom tias cov hluav taws xob tso tawm yog proportional rau lub siab thov. Cov kev ntsuam xyuas ntxiv tau pom tias cov khoom kho qhov muag ntawm cov kua ionic hloov pauv thaum nws xa cov hluav taws xob tam sim no, thiab qee zaum, txoj kev ua kua khoov lub teeb.
Pab pawg tshawb fawb tseem tsis tuaj yeem piav qhia vim li cas cov kua ionic yog piezoelectric, tab sis lawv ntseeg tias kev siv lub siab tuaj yeem pab cais cov nqi hauv cov kua, tso qee qhov ntawm lawv. Lawv npaj yuav kawm ntxiv txog cov ntaub ntawv rau cov lus teb.