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master's thesis
Elektromehanička nestabilnost u nanoelektromehaničkim sustavima
Zagreb: University of Zagreb, Faculty of Science, 2018. urn:nbn:hr:217:872155
Gomaz, Larisa
University of Zagreb
Faculty of Science
Department of Physics

Institutional repository: Repository of the Faculty of Science

Cite this document

Gomaz, L. (2018). Elektromehanička nestabilnost u nanoelektromehaničkim sustavima (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:872155

Gomaz, Larisa. "Elektromehanička nestabilnost u nanoelektromehaničkim sustavima." Master's thesis, University of Zagreb, Faculty of Science, 2018. https://urn.nsk.hr/urn:nbn:hr:217:872155

Gomaz, Larisa. "Elektromehanička nestabilnost u nanoelektromehaničkim sustavima." Master's thesis, University of Zagreb, Faculty of Science, 2018. https://urn.nsk.hr/urn:nbn:hr:217:872155

Gomaz, L. (2018). 'Elektromehanička nestabilnost u nanoelektromehaničkim sustavima', Master's thesis, University of Zagreb, Faculty of Science, accessed 28 March 2025, https://urn.nsk.hr/urn:nbn:hr:217:872155

Gomaz L. Elektromehanička nestabilnost u nanoelektromehaničkim sustavima [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2018 [cited 2025 March 28] Available at: https://urn.nsk.hr/urn:nbn:hr:217:872155

L. Gomaz, "Elektromehanička nestabilnost u nanoelektromehaničkim sustavima", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2018. Available at: https://urn.nsk.hr/urn:nbn:hr:217:872155

Metadata
TitleElektromehanička nestabilnost u nanoelektromehaničkim sustavima
Title (english)Electromechanical instability in nanoelectromechanical systems
AuthorLarisa Gomaz
MentorDanko Radić (mentor)
Committee memberDanko Radić (predsjednik povjerenstva)
Committee memberKrešimir Kumerički (član povjerenstva)
Committee memberNikola Poljak (član povjerenstva)
Committee memberMatko Milin (član povjerenstva)
Committee memberŽeljko Skoko (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Physics)
Zagreb
Defense date and country2018-09-20, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Physics
Abstract
U ovom radu analiziran je DC - elektronski transport kroz vodljivu karbonsku nanocjevčicu u vanjskom magnetskom polju koja je učvršćena između nemagnetskog i magnetskog mikrokontakta na koje je doveden prednapon. Karbonska nanocjevčica promatrana je kao kvantna točka unutar režima kulonske blokade u kojoj su elektronska stanja Zeemanski rascijepljena i dovoljno razmaknuta obzirom na termalnu ”razmazanost” Fermijeve plohe pa je svako Zeemanski rascijepljeno stanje ponaosob smatrano odgovornim za... More elektronski transport. Magnetomotorno vezanje izmedu električne struje kroz karbonsku nanocjevčicu i njenih mehaničkih vibracija može rezultirati elektromehaničkom nestabilnošću i samoekscitiranim oscilacijama. S obzirom na to, u ovom radu dan je klasični teorijski opis elektromehaničke nestabilnosti u navedenom nanoelektromehaničkom sustavu u području dozvoljenih fizikalnih parametara pri čemu je elektromehanička nestabilnost određena nastankom samoekscitiranih oscilacija mehaničkih i električnih obzervabli koje uočavamo kao gubitak stabilnosti stacionarne fiksne točke i nastanak graničnog kola u faznom prostoru oscilatora. Less
Abstract (english)
In this thesis we analyze DC - electronic transport through a carbon nanotube suspended between normal - metal source and spin - polarized drain in external magnetic field symmetrically biased. The carbon nanotube is considered as a quantum dot within Coulomb blockade regime in which electronic states are Zeeman - split and distant enough with respect to the thermal smearing of the Fermi surface so that each of the Zeeman - split states is responsible for electronic transport. Magnetomotive... More coupling between electric current through the carbon nanotube and its mechanical vibrations may lead to an electromechanical instability and self - excited mechanical vibrations. This thesis contains a classical theoretical description of electromechanical instability in the nanoelectromechanical system in the field of allowed physical parameters. Electromechanical instability is determined by occurrence of the self - excited mechanical vibrations that we notice as loss of stability of stationary fixed point and occurrence of a limit cycle in a phase space of an oscillator. Less
Keywords
Keywords (english)
Languagecroatian
URN:NBNurn:nbn:hr:217:872155
Study programmeTitle: Physics and Computer Science; specializations in: Education
Course: Education
Study programme type: university
Study level: integrated undergraduate and graduate
Academic / professional title: magistar/magistra fizike i informatike (magistar/magistra fizike i informatike)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
Created on2018-11-20 14:14:24
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