Inzwa yokushisa nengcindezi ye-Cummins 3408627

Umphumela we-Piezoelectric

Uma amanye ama-dielectrics ekhubazekile ngokusebenzisa amandla endaweni ethile, amanani akhiqizwa endaweni ethile, futhi lapho amandla angaphandle esuswa, abuyela esimweni esingakhokhisiwe. Lesi simo sibizwa ngokuthi umphumela omuhle we-piezoelectric. Uma insimu kagesi isetshenziswa ekuqondeni kwe-polarization ye-dielectric, i-dielectric izokhiqiza ukuguqulwa komshini noma ukucindezela komshini endaweni ethile. Lapho insimu kagesi yangaphandle isusiwe, ukuguqulwa noma ukucindezeleka kuzonyamalala, okubizwa ngokuthi i-inverse piezoelectric effect.

Isici se-Piezoelectric

Inzwa ye-Piezoelectric iyinzwa yomzimba kanye nenzwa yokukhiqiza amandla. Izinto ezisetshenziswa kakhulu ze-piezoelectric i-Shi Ying crystal (SiO2 _ 2) kanye nezitsha zobumba zokwenziwa ze-piezoelectric.

I-piezoelectric constant ye-piezoelectric ceramics iphindwe izikhathi eziningana kune-Shi Ying crystal, futhi ukuzwela kwayo kuphezulu.

4) i-transducer ye-photoelectric

1. umphumela we-photoelectric

Uma ukukhanya kukhanyisela into, kungathathwa njengochungechunge lwama-photons anamandla aqhuma into. Uma amandla ama-photon emakhulu ngokwanele, ama-electron angaphakathi kwento azosusa imingcele yamandla angaphakathi futhi abe nemiphumela kagesi ehambisanayo, ebizwa ngokuthi umphumela we-photoelectric.

1) Ngaphansi kwesenzo sokukhanya, into eyenza ama-electron aphume endaweni ibizwa ngokuthi umphumela wesithombe kagesi wangaphandle, njengeshubhu le-photoelectric kanye neshubhu le-photomultiplier.

2) Ngaphansi kwesenzo sokukhanya, isenzeko sokuthi ukumelana kwento kuyashintsha kubizwa ngomphumela wangaphakathi wesithombe kagesi, njenge-photoresistor, i-photodiode, i-phototransistor ne-phototransistor.

3) Ngaphansi kwesenzo sokukhanya, into ikhiqiza amandla e-electromotive ohlangothini oluthile, olubizwa nge-photovoltaic phenomenon, njengeseli ye-photovoltaic (idivayisi ezwela ukuma kwendawo yokukhanya yesigameko endaweni ezwelayo).

2 I-Photosensitive resistor

Lapho i-photoresistor ikhanyiswa ukukhanya, ama-electron ayafuduka ukuze akhiqize amapheya e-electron-hole, okwenza ukumelana nokumelana kube kuncane. Lapho ukukhanya kunamandla, kuyancipha ukumelana. Ukukhanya kwesigameko kuyanyamalala, ipheya ye-electron-hole iyalulama, futhi inani lokumelana libuyela kancane kancane kunani lalo langempela.

3. Ithubhu e-photosensitive

Amashubhu e-photosensitive (i-photodiode, i-phototransistor, i-phototransistor, njll.) angamadivayisi we-semiconductor.

4. Electroluminescence

I-luminescence phenomenon ekhiqizwa ngezinto eziqinile ze-luminescent ngaphansi kwe-excitation yensimu kagesi ibizwa ngokuthi i-electroluminescence. I-Electroluminescence iyinqubo yokuguqula ngokuqondile amandla kagesi abe amandla okukhanya. I-Light-emitting diode (LED) iyisisetshenziswa se-semiconductor electroluminescent ehlanganiswe nezinto ezikhethekile. Uma ukuhlangana kwe-PN kuchemile phambili, amandla angaphezulu akhiqizwa ngenxa yokuhlanganiswa kabusha kwe-electron-hole, ekhishwa ngendlela yama-photons futhi ikhiphe ukukhanya.