Piezoelectric ceramics yog ib hom ntawm cov ntaub ntawv ua haujlwm ceramic khoom siv uas tuaj yeem hloov kho tshuab zog thiab hluav taws xob lub zog rau ib leeg. Nws yog cov nyhuv piezoelectric. Ntxiv rau piezoelectricity, piezoelectric ceramics tseem muaj dielectricity, elasticity, thiab lwm yam, uas tau siv dav hauv kev kho mob, Acoustic sensors, acoustic transducers, ultrasonic motors, thiab lwm yam.

Piezoelectric ceramics tsuas yog siv hauv kev tsim cov tshuab ultrasonic transducers, lub tshuab nqus dej acoustic, cov tshuab hluav taws xob, cov tshuab hluav taws xob, cov tshuab lim, cov tshuab hluav taws xob, cov hluav taws xob, cov hluav taws xob tsis zoo, cov tshuab hluav taws xob, cov ntsuas hluav taws xob, cov cuab yeej siv hluav taws xob, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab cov khoom siv tawg. piezoelectric gyros, thiab lwm yam, tsis yog siv rau hauv cov chaw siab, tab sis kuj siv hauv lub neej txhua hnub los pab tib neeg thiab tsim kom muaj lub neej zoo rau tib neeg.

Hauv Ntiaj Teb Kev Tsov Rog Zaum II, BaTiO3 lub ceramics tau pom, thiab cov khoom siv piezoelectric thiab lawv cov ntawv thov tau ua ntu ntu. Thiabnano BaTiO3 hmoov ua kom nws tsim BaTiO3 Ceramic nrog cov khoom ntau tshaj.

Thaum xaus ntawm lub xyoo pua 20, cov kws tshawb fawb cov khoom los ntawm thoob ntiaj teb pib tshawb nrhiav cov khoom siv tshiab ferroelectric. Thawj thawj zaug, lub tswvyim ntawm nano cov ntaub ntawv tau qhia rau hauv kev kawm txog piezoelectric cov ntaub ntawv, uas ua rau cov kev tshawb fawb thiab kev loj hlob ntawm cov khoom siv piezoelectric, cov khoom ua haujlwm, ntsib lub ntsej muag tseem ceeb, tshwm sim hauv cov ntaub ntawv. Kev hloov pauv ntawm kev ua tau zoo yog tias cov cuab yeej lub zog, cov khoom piezoelectric, thiab cov yam ntxwv dielectric tau zoo dua. Qhov no yuav tseeg tias muaj qhov tsis zoo rau kev ua tau zoo ntawm kev hloov tsheb.

Tam sim no, txoj hauv kev tseem ceeb ntawm kev lees txais nano meter cov tswv yim hauv cov khoom siv piezoelectric yog los txhim kho qee yam khoom ntawm piezoelectric cov ntaub ntawv (ntxiv nanoparticles txawv los ua nano complex hauv cov ntaub ntawv piezoelectric) thiab (siv piezoelectric nanopowders lossis Nanocrystals thiab polymers yog tsim los ua cov khoom sib txuas los ntawm txhais tau tias tshwj xeeb) 2 txoj kev. Piv txwv, nyob rau hauv chav tuam tsev ntawm Thanh Ho University, txhawm rau txhim kho qhov saturation polarization thiab seem polarization ntawm ferroelectric ceramic cov ntaub ntawv, Ag nanoparticles tau ntxiv los npaj "nano-multiphase ferroelectric ceramics raws li hlau nanoparticles / ferroelectric ceramics"; Xws li nano alumina (AL2O3) / PZT,nano zirconium dioxide (ZrO2)/ PZT thiab lwm yam nano sib xyaw ua kom muaj cov khoom siv lim kom txo cov khoom siv qub ferroelectric k31 thiab nce qhov kev sib txhuam tawv; cov nano piezoelectric cov ntaub ntawv thiab cov polymers ua ke kom tau nano piezoelectric cov khoom sib xyaw. Lub sijhawm no peb yuav kawm txog kev npaj cov piezoelectric ceramics los ntawm kev sib xyaw ua ke nano piezoelectric hmoov nrog nano organic ntxiv, thiab tom qab ntawd kawm txog kev hloov pauv ntawm piezoelectric cov khoom thiab cov khoom dielectric.

Peb tab tom xav ntau thiab ntau daim ntawv thov ntawm cov khoom siv nanoparticles hauv piezoelectric ceramics!

 


Sijhawm Tshaj Tawm: Lub Yim Hli-18-2021