| fullrecord |
[{"key": "dc.contributor.author", "value": "Hypp\u00f6nen, Viivi", "language": null, "element": "contributor", "qualifier": "author", "schema": "dc"}, {"key": "dc.date.accessioned", "value": "2014-11-12T11:48:40Z", "language": null, "element": "date", "qualifier": "accessioned", "schema": "dc"}, {"key": "dc.date.available", "value": "2014-11-12T11:48:40Z", "language": null, "element": "date", "qualifier": "available", "schema": "dc"}, {"key": "dc.date.issued", "value": "2014", "language": null, "element": "date", "qualifier": "issued", "schema": "dc"}, {"key": "dc.identifier.other", "value": "oai:jykdok.linneanet.fi:1451317", "language": null, "element": "identifier", "qualifier": "other", "schema": "dc"}, {"key": "dc.identifier.uri", "value": "https://jyx.jyu.fi/handle/123456789/44635", "language": null, "element": "identifier", "qualifier": "uri", "schema": "dc"}, {"key": "dc.description.abstract", "value": "Tutkin nanokokoisten timanttien asettumista kasvatusalustan pinnalle timanttiohutkalvojen valmistusta varten. Tutkielma esittelee nanotimanttien historiaa ja k\u00e4ytt\u00f6kohteita kokeellisen osion ohella. Kokeiden aluksi kaupallista nanotimanttien ja veden muodostamaa liuosta laimennetaan joko vedell\u00e4 tai etanolilla eri timanttikonsentraatioille. Kasvatusalusta, substraatti, kastetaan laimennettuun liuokseen, josta timantit asettuvat alustan pinnalle. Mahdollisimman pienten ja erilleen, mutta tihe\u00e4sti, asettuneiden timanttien kerrosta tavoitellaan sile\u00e4n rei\u00e4tt\u00f6m\u00e4n kalvon tuottamiseksi. Timanttikalvot kasvatetaan nanotimanttien muodostamasta kerroksesta kaasukasvatusmenetelm\u00e4\u00e4 hy\u00f6dynt\u00e4en.\n\nLaimennetuista nanotimanttiliuoksista m\u00e4\u00e4ritettiin dynaamisen valon siroamisen ja elektroforeettisen liikkuvuuden mittauksilla timanttien koko ja zeta-potentiaali, joka vaikuttaa timanttien paakkuuntumiseen liuoksessa sek\u00e4 niiden vuorovaikutukseen pinnan kanssa. Liuoksia k\u00e4siteltiin ultra\u00e4\u00e4nell\u00e4 ja sentrifugoimalla timanttien paakkuuntumisen v\u00e4ltt\u00e4miseksi. Asettumista puolijohtaville ja metallisille pinnoille verrattiin. Substraateille muodostuneita kerroksia tutkittiin pyyhk\u00e4isyelektronimikroskoopilla, atomivoimamikroskoopilla ja ionisuihkuanalyysilla. Mikroskooppikuvista m\u00e4\u00e4ritettiin timanttien koko, korkeusprofiili ja niiden m\u00e4\u00e4r\u00e4 pinta-alaa kohti sek\u00e4 arvioitiin hiilen m\u00e4\u00e4r\u00e4. Ionisuihkuanalyysill\u00e4 m\u00e4\u00e4ritettiin hiilen m\u00e4\u00e4r\u00e4. Timanttien et\u00e4isyyksi\u00e4 toisiinsa tutkittiin vertaamalla oikeita mikroskooppikuvia simuloituihin kuviin ja laskemalla kuvista timanttien tiheys et\u00e4isyyden funktiona.\n\nDynaamisen valon siroamismittauksen rajakooksi nanotimanttiliuoksissa paljastui 0.2 nm, jota pienemmill\u00e4 konsentraatioilla kokomittauksen tulokset erosivat huomattavasti kuvista m\u00e4\u00e4ritetyist\u00e4 kooista. Liuoksen k\u00e4sittelyll\u00e4 ei ollut merkitt\u00e4v\u00e4\u00e4 vaikutusta timanttien kokoon. Pienimm\u00e4t timantit 19.0 nm ja eniten timantteja pinta-alaa kohti 4.5*10^10 cm^-2 saavutettiin piisubstraatilla, joka oli kastettu 2.0 g/l timanttikonsentraatioiseen etanoliliuokseen. Metallisilla substraateilla timantit kasaantuivat huomattavasti tiiviimp\u00e4\u00e4n kuin puolijohtavilla substraateilla. Hiilen m\u00e4\u00e4r\u00e4 oli luokkaa 3--8*10^15 cm^-2 ionisuihkulla tehdyn alkuaineanalyysin mukaan. Simulaatioista havaittiin, ett\u00e4 halkaisijaltaan pienemm\u00e4t timantit voivat asettua l\u00e4hemm\u00e4s toisia timantteja kuin suuremmat.", "language": "fi", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.abstract", "value": "The influence of the properties of nanodiamond seeding dispersions and substrate materials were studied to improve the seeding density for growing nanocrystalline diamond thin films. Particle sizes and zeta potentials of dispersions were analysed with dynamic light scattering and electrophoretic mobility. Scanning electron microscopy and atomic force microscopy images of seed layers were taken and analysed. The surface density of carbon was determined with ion beam analysis. The density variation of nanodiamond seeds was determined and simulated.\nThe different treatments of dispersions have no effect on the particle size. The highest achieved seeding density of separated seeds was 4.5*10^10 cm^-2 and the smallest seed size was 19.0 nm both on same semiconducting substrate. On metallic substrates the particles accumulated. Surface density of carbon on semiconducting substrates was 3--8*10^15 cm^-2. Density variation indicated that smaller particles deposite closer to other particles than larger ones.", "language": "en", "element": "description", "qualifier": "abstract", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted using Plone Publishing form by Viivi Hypp\u00f6nen (vianhypp) on 2014-11-12 11:48:29.169765. Form: Pro gradu -lomake (https://kirjasto.jyu.fi/julkaisut/julkaisulomakkeet/pro-gradu-lomake). JyX data: [jyx_publishing-allowed (fi) =True]", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Submitted by jyx lomake-julkaisija (jyx-julkaisija@noreply.fi) on 2014-11-12T11:48:40Z\nNo. of bitstreams: 2\nURN:NBN:fi:jyu-201411123228.pdf: 70021054 bytes, checksum: e90d67d1cb4da935c48095821873ae23 (MD5)\nlicense.html: 4801 bytes, checksum: cd4548e5c7b98ab33a64facb5b6c2e7b (MD5)", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.description.provenance", "value": "Made available in DSpace on 2014-11-12T11:48:40Z (GMT). No. of bitstreams: 2\nURN:NBN:fi:jyu-201411123228.pdf: 70021054 bytes, checksum: e90d67d1cb4da935c48095821873ae23 (MD5)\nlicense.html: 4801 bytes, checksum: cd4548e5c7b98ab33a64facb5b6c2e7b (MD5)\n Previous issue date: 2014", "language": "en", "element": "description", "qualifier": "provenance", "schema": "dc"}, {"key": "dc.format.extent", "value": "1 verkkoaineisto (70 sivua)", "language": null, "element": "format", "qualifier": "extent", "schema": "dc"}, {"key": "dc.format.mimetype", "value": "application/pdf", "language": null, "element": "format", "qualifier": "mimetype", "schema": "dc"}, {"key": "dc.language.iso", "value": "eng", "language": null, "element": "language", "qualifier": "iso", "schema": "dc"}, {"key": "dc.rights", "value": "In Copyright", "language": "en", "element": "rights", "qualifier": null, "schema": "dc"}, {"key": "dc.subject.other", "value": "nanotekniikka", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "nanotieteet", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "nanoparticles", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.subject.other", "value": "diamond", "language": "", "element": "subject", "qualifier": "other", "schema": "dc"}, {"key": "dc.title", "value": "Nanodiamond seeding for thin film growth", "language": null, "element": "title", "qualifier": null, "schema": "dc"}, {"key": "dc.type", "value": "master thesis", "language": null, "element": "type", "qualifier": null, "schema": "dc"}, {"key": "dc.identifier.urn", "value": "URN:NBN:fi:jyu-201411123228", "language": null, "element": "identifier", "qualifier": "urn", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Pro gradu -tutkielma", "language": "fi", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.type.ontasot", "value": "Master\u2019s thesis", "language": "en", "element": "type", "qualifier": "ontasot", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Matemaattis-luonnontieteellinen tiedekunta", "language": "fi", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.faculty", "value": "Faculty of Sciences", "language": "en", "element": "contributor", "qualifier": "faculty", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Fysiikan laitos", "language": "fi", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.department", "value": "Department of Physics", "language": "en", "element": "contributor", "qualifier": "department", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "University of Jyv\u00e4skyl\u00e4", "language": "en", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.contributor.organization", "value": "Jyv\u00e4skyl\u00e4n yliopisto", "language": "fi", "element": "contributor", "qualifier": "organization", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Fysiikka", "language": "fi", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.subject.discipline", "value": "Physics", "language": "en", "element": "subject", "qualifier": "discipline", "schema": "dc"}, {"key": "dc.date.updated", "value": "2014-11-12T11:48:41Z", "language": null, "element": "date", "qualifier": "updated", "schema": "dc"}, {"key": "dc.type.coar", "value": "http://purl.org/coar/resource_type/c_bdcc", "language": null, "element": "type", "qualifier": "coar", "schema": "dc"}, {"key": "dc.rights.accesslevel", "value": "restrictedAccess", "language": "fi", "element": "rights", "qualifier": "accesslevel", "schema": "dc"}, {"key": "dc.type.publication", "value": "masterThesis", "language": null, "element": "type", "qualifier": "publication", "schema": "dc"}, {"key": "dc.subject.oppiainekoodi", "value": "4021", "language": null, "element": "subject", "qualifier": "oppiainekoodi", "schema": "dc"}, {"key": "dc.subject.yso", "value": "nanotekniikka", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.subject.yso", "value": "nanotieteet", "language": null, "element": "subject", "qualifier": "yso", "schema": "dc"}, {"key": "dc.format.content", "value": "fulltext", "language": null, "element": "format", "qualifier": "content", "schema": "dc"}, {"key": "dc.rights.url", "value": "https://rightsstatements.org/page/InC/1.0/", "language": null, "element": "rights", "qualifier": "url", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "Aineistoon p\u00e4\u00e4sy\u00e4 on rajoitettu tekij\u00e4noikeussyist\u00e4. Aineisto on luettavissa Jyv\u00e4skyl\u00e4n yliopiston kirjaston arkistoty\u00f6asemalta. Ks. https://kirjasto.jyu.fi/fi/tyoskentelytilat/laitteet-ja-tilat.", "language": "fi", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.rights.accessrights", "value": "This material has a restricted access due to copyright reasons. It can be read at the workstation at Jyv\u00e4skyl\u00e4 University Library reserved for the use of archival materials: https://kirjasto.jyu.fi/en/workspaces/facilities.", "language": "en", "element": "rights", "qualifier": "accessrights", "schema": "dc"}, {"key": "dc.type.okm", "value": "G2", "language": null, "element": "type", "qualifier": "okm", "schema": "dc"}]
|