Antimona sulfīda nanovadu mehāniskās īpašības

6533b832fe1ef96bd129b1b1

RESEARCH PRODUCT

Antimona sulfīda nanovadu mehāniskās īpašības

Līga Jasulaņeca

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Antimona sulfīds Sb2S3 ir guvis ievērību, pateicoties augstajai fotojutībai un termoelektriskajai jaudai. Nanovadu mehaniskās īpašības ir atkarīgas no materiāla struktūras un nosaka uz nanovadiem balstītu ierīču ātrdarbību, ilgtspēju un izturību. Sb2S3 nanovadu mehāniskās īpašības līdz šim nav pētītas. Darbā Sb2S3 nanovadu Junga moduļa noteikšanai izmantotas divas in situ metodes - ar elektrisko lauku ierosināta mehāniskā rezonanse un nanovada lieces deformācija elektrostatiskajā laukā. Mehāniskās rezonanses eksperimentos noteikts rezonatora svārstību labums. Sb2S3 nanovadiem novērotas divas vai vairākas fundamentālās rezonanses frekvences, un parādīta to saistība ar nanovada šķērsgriezuma ģeometriskajiem izmēriem. Darbā noteiktais Sb2S3 nanovadu Junga modulis ir mazāks nekā literatūrā pieejamais makroskopiska materiāla Junga modulis. Rezultāti norāda uz tendenci Junga modulim palielināties, samazinoties nanovadu šķērsgriezumam. Junga moduļa vērtības, kuras noteiktas ar abām metodēm - mehāniskās rezonanses un lieces deformācijas elektrostatiskajā laukā - kļūdu robežās sakrīt.

year	journal	country	edition	language
2012-01-01

https://dspace.lu.lv/dspace/handle/7/23745

PEPhysical Sciences and Engineering
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