Daga da Electrical Conductance?

Na wani shine Electrical Conductance?

Takardun conductance

Wani shaida na iya yin haka tana bayyana cewa kadan da mutane suka sanarwa ta ya haɗa kan ƙarin da tsari yake zama. Daga cikin abubuwan da muke so in sanarwa, resistance ita ce alamar kayan da take gida tsari. Wannan yana nufin cewa conductance ita ce wasu na reciprocal ta resistance. Amma, conductance ana rubuta a cikin wannan hakan:

Takardun conductivity

Conductivity tana nufin kyakkyawar kayan da ke samar da tsari, kuma tana haɗa kan abubuwan da suke samar da.

Bincike da takardun energy band theory

Electrons a cikin orbitar da ke ƙarin da atomi suna da nasara a gaba daban-daban. Saboda haka, electrons a cikin orbitar da ke ƙarin suke zama zai iya gudanar da atomi. Ba ni a bin da cikakken bayanan da sabon littafi.

Idan akwai atoms da suka gudanar da su, electrons a cikin atomi na biyu suke zama da nasara daga atoms masu biyu. Wannan nasara tana fiye a cikin orbitar da ke ƙarin. Saboda wannan nasara, energy levels da ke daidai a cikin atoms da suka gudanar da su suke zama energy bands. Saboda wannan abu, an samar da energy bands biyu, valence band da conduction band.

Metal

A cikin metals, atoms da suka gudanar da su suke zama electrons da suka zama da nasara daga atoms da suka gudanar da su, wanda tana haɗa kan valence band da conduction band suka zama ƙarin ko kuma suka gudanar da su. Idan a taka energy na musamman daga heat ko electricity, electrons suke zama da energy levels da ke fiye da kuma zama free electrons. Idan a taka power supply, free electrons suke zama da positive terminal, wanda tana yi electric current. Metals suna da free electrons da suka da yawan adadin, wanda tana haɗa kan suka zama conductors da yawan electrical conductivity.

Semiconductors da insulators

A cikin semiconductors, valence band da conduction band suka zama da forbidden gap da ke da yawan adadin. A fagen gyare, ba electron bata da energy da ke da yawa don zama a cikin conduction band, saboda haka, ba za a iya zama charge motion. Amma a fagen lalle, zai iya zama cewa electrons da ke da yawan adadin suke zama a cikin conduction band. A fagen lalle, electrons a cikin conduction band ba suka da yawan adadin kamar da metals, saboda haka, ba suka zama da yawan electrical conductivity. Semiconductors ba suka zama da yawan conductivity kamar metals, amma ba suka zama da yawan conductivity kamar insulators. Saboda haka, wannan irin material ana kiran semiconductors - meaning semiconductors.