Ucwaningo mayelana nomkhawulo wethonya lokuguquguquka kwezinga lokushisa elizungezile ekulinganisweni kwepulatifomu yokunemba kwe-granite.

Emkhakheni wokulinganisa ngokunemba, ipulatifomu yokunemba kwe-granite enokuqina kwayo okuhle kakhulu, ubulukhuni obuphezulu kanye nokumelana okuhle nokuguguleka, isibe yisisekelo esifanelekile semisebenzi eminingi yokulinganisa ngokunemba okuphezulu. Kodwa-ke, ukushintshashintsha kwezinga lokushisa ezicini zemvelo, njenge-"precision killer" efihliwe ebumnyameni, kunomthelela ongenakubalwa ekunembeni kokulinganisa kwepulatifomu yokunemba kwe-granite. Kubaluleke kakhulu ukuphenya ngokujulile umkhawulo wethonya ukuqinisekisa ukunemba nokuthembeka komsebenzi wokulinganisa.

Nakuba i-granite yaziwa ngokuzinza kwayo, ayivikelekile ekushintsheni kwezinga lokushisa. Izingxenye zayo eziyinhloko yi-quartz, i-feldspar kanye nezinye izimbiwa, ezizokhiqiza ukwanda kokushisa kanye nokuncipha kwezinga lokushisa emazingeni okushisa ahlukene. Lapho izinga lokushisa elizungezile likhuphuka, ipulatifomu yokucacisa i-granite iyashiswa futhi inwetshwe, futhi ubukhulu bepulatifomu buzoshintsha kancane. Lapho izinga lokushisa lehla, lizobuyela esimweni salo sokuqala. Izinguquko zosayizi ezibonakala zincane zingakhuliswa zibe yizici ezibalulekile ezithinta imiphumela yokulinganisa ezimweni zokulinganisa ngokunembile.

Uma sithatha ipulatifomu yegranite ehambisana nethuluzi lokulinganisa elivamile njengesibonelo, emsebenzini wokulinganisa onembile kakhulu, izidingo zokunemba kokulinganisa zivame ukufinyelela ezingeni le-micron noma ngaphezulu. Kucatshangwa ukuthi ekushiseni okujwayelekile okungu-20℃, amapharamitha ahlukahlukene endawo yepulatifomu asesimweni esifanele, futhi idatha enembile ingatholakala ngokulinganisa umsebenzi. Lapho izinga lokushisa elizungezile lishintshashintsha, isimo sihluke kakhulu. Ngemva kwenani elikhulu lezibalo zedatha yokuhlola kanye nokuhlaziywa kwethiyori, ngaphansi kwezimo ezivamile, ukushintshashintsha kwezinga lokushisa lemvelo okungu-1℃, ukwanda okuqondile noma ukuncipha kwepulatifomu yokunemba kwegranite cishe kungama-5-7 ×10⁻⁶/℃. Lokhu kusho ukuthi epulatifomu yegranite enobude obuseceleni obuyimitha eli-1, ubude obuseceleni bungashintsha ngama-micron angu-5-7 uma izinga lokushisa lishintsha ngo-1 ° C. Ekulinganisweni kokunemba, ushintsho olunjalo ngobukhulu lwanele ukubangela amaphutha okulinganisa ngaphezu kobubanzi obamukelekayo.
Ngomsebenzi wokulinganisa odingwa amazinga ahlukene okunemba, umkhawulo wethonya lokuguquguquka kwezinga lokushisa nawo uhlukile. Ekulinganisweni okuvamile kokunemba, njengokulinganisa usayizi wezingxenye zemishini, uma iphutha lokulinganisa elivumelekile lingaphakathi kwama-micron angu-±20, ngokusho kokubalwa kwe-coefficient yokwandisa okungenhla, ukuguquguquka kwezinga lokushisa kudinga ukulawulwa ngaphakathi kobubanzi obungu-± 3-4 ℃, ukuze kulawulwe iphutha lokulinganisa elibangelwa ushintsho losayizi wepulatifomu ezingeni elamukelekayo. Ezindaweni ezinezidingo zokunemba okuphezulu, njengokulinganisa inqubo ye-lithography ekukhiqizweni kwama-chip e-semiconductor, iphutha livunyelwe ngaphakathi kwama-micron angu-±1, futhi ukuguquguquka kwezinga lokushisa kudinga ukulawulwa ngokuqinile ngaphakathi kwama-± 0.1-0.2 ° C. Uma ukuguquguquka kwezinga lokushisa kudlula lo mkhawulo, ukwanda kokushisa kanye nokuncipha kwepulatifomu ye-granite kungabangela ukuphambuka emiphumeleni yokulinganisa, okuzothinta isivuno sokukhiqiza ama-chip.
Ukuze kubhekanwe nomthelela wokuguquguquka kwezinga lokushisa elizungezile ekulinganisweni kokulinganisa kwepulatifomu yokunemba kwe-granite, izinyathelo eziningi zivame ukuthathwa emsebenzini ongokoqobo. Isibonelo, imishini yokushisa eqondile ephezulu ifakwa endaweni yokulinganisa ukulawula ukushintshashintsha kwezinga lokushisa ebangeni elincane kakhulu; Isinxephezelo sokushisa senziwa kudatha yokulinganisa, futhi imiphumela yokulinganisa ilungiswa yi-algorithm yesofthiwe ngokuya nge-coefficient yokwandisa ukushisa yepulatifomu kanye nokushintsha kwezinga lokushisa ngesikhathi sangempela. Kodwa-ke, kungakhathaliseki ukuthi yiziphi izinyathelo ezithathwayo, ukuqonda okunembile komthelela wokuguquguquka kwezinga lokushisa elizungezile ekulinganisweni kokulinganisa kwepulatifomu yokunemba kwe-granite kuyisisekelo sokuqinisekisa umsebenzi wokulinganisa onembile nothembekile.