Self-assembly on strained metallic interfaces is an attractive option for growing highly ordered, multi-functional nanopatterns. I performed a series of studies in UHV to investigate the processes of ordered growth and self-assembly on Au(111). I did a combined AES/STM study of the formation of ordered networks of Co islands on Au(111) and obtained the conditions for growing uniform, bi-layer Co-terminated clusters. In another STM study I obtained novel results which reveal the particular complexity of CH3SH self-assembly on Au(111). I observed dimerization of the molecules on the FCC areas of an unperturbed Au(111) reconstruction network and the formation of two new continuous ordered phases--an in-plane oriented stripe phase (beta-phase) and an out-of-plane pointing, close-packed phase (&phgr;-phase). These results complement recent theoretical investigations and contribute to an ongoing DFT study of the energetics of the assembly. The cluster growth and the self-assembly processes are successfully combined in achieving selective adsorption of CH 3SH on Co/Au(111) network--a prototype nanotechnology for directed self-assembly of molecular elements on large, multifunctional templates with a nm size unit cell. The thermal evolution of Co/Au(111) system is established, and CH3SH is shown to exhibit a novel interaction which leads to non-dissociative dimerization and to the formation of new ordered phases.
","abstract_html":"<p>Self-assembly on strained metallic interfaces is an attractive option for growing highly ordered, multi-functional nanopatterns. I performed a series of studies in UHV to investigate the processes of ordered growth and self-assembly on Au(111). I did a combined AES/STM study of the formation of ordered networks of Co islands on Au(111) and obtained the conditions for growing uniform, bi-layer Co-terminated clusters. In another STM study I obtained novel results which reveal the particular complexity of CH3SH self-assembly on Au(111). I observed dimerization of the molecules on the FCC areas of an unperturbed Au(111) reconstruction network and the formation of two new continuous ordered phases--an in-plane oriented stripe phase (beta-phase) and an out-of-plane pointing, close-packed phase (&phgr;-phase). These results complement recent theoretical investigations and contribute to an ongoing DFT study of the energetics of the assembly. The cluster growth and the self-assembly processes are successfully combined in achieving selective adsorption of CH 3SH on Co/Au(111) network--a prototype nanotechnology for directed self-assembly of molecular elements on large, multifunctional templates with a nm size unit cell. The thermal evolution of Co/Au(111) system is established, and CH3SH is shown to exhibit a novel interaction which leads to non-dissociative dimerization and to the formation of new ordered phases.</p>","abstract_has_math":false,"creators":["Nenchev, Georgi Nenchev"],"institution":null,"degree_name":"Doctor of Philosophy","degree_level":"Dissertation","degree_discipline":null,"degree_department":null,"school":null,"contributors":["Karsten Pohl"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2008,"date_issued":"2008-01-01T08:00:00Z","date_published":"2008-01-01T08:00:00Z","updated_at":"2026-07-24T05:22:25Z","subjects":["Physics","Condensed Matter"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://scholars.unh.edu/dissertation/433","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Karsten Pohl"]},{"key":"dc:creator","label":"Author","values":["Nenchev, Georgi Nenchev"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Doctor of Philosophy"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Physics","Condensed Matter"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://scholars.unh.edu/dissertation/433"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Self-assembly on strained metallic interfaces is an attractive option for growing highly ordered, multi-functional nanopatterns. I performed a series of studies in UHV to investigate the processes of ordered growth and self-assembly on Au(111). I did a combined AES/STM study of the formation of ordered networks of Co islands on Au(111) and obtained the conditions for growing uniform, bi-layer Co-terminated clusters. In another STM study I obtained novel results which reveal the particular complexity of CH3SH self-assembly on Au(111). I observed dimerization of the molecules on the FCC areas of an unperturbed Au(111) reconstruction network and the formation of two new continuous ordered phases--an in-plane oriented stripe phase (beta-phase) and an out-of-plane pointing, close-packed phase (&phgr;-phase). These results complement recent theoretical investigations and contribute to an ongoing DFT study of the energetics of the assembly. The cluster growth and the self-assembly processes are successfully combined in achieving selective adsorption of CH 3SH on Co/Au(111) network--a prototype nanotechnology for directed self-assembly of molecular elements on large, multifunctional templates with a nm size unit cell. The thermal evolution of Co/Au(111) system is established, and CH3SH is shown to exhibit a novel interaction which leads to non-dissociative dimerization and to the formation of new ordered phases.
"]},{"key":"dc:title","label":"Title","values":["Nanotemplate creation and self-assembly on the (111) surface of gold"]}]}],"canonical_facts":{"dc:contributor":["Karsten Pohl"],"dc:creator":["Nenchev, Georgi Nenchev"],"dc:description.abstract":["Self-assembly on strained metallic interfaces is an attractive option for growing highly ordered, multi-functional nanopatterns. I performed a series of studies in UHV to investigate the processes of ordered growth and self-assembly on Au(111). I did a combined AES/STM study of the formation of ordered networks of Co islands on Au(111) and obtained the conditions for growing uniform, bi-layer Co-terminated clusters. In another STM study I obtained novel results which reveal the particular complexity of CH3SH self-assembly on Au(111). I observed dimerization of the molecules on the FCC areas of an unperturbed Au(111) reconstruction network and the formation of two new continuous ordered phases--an in-plane oriented stripe phase (beta-phase) and an out-of-plane pointing, close-packed phase (&phgr;-phase). These results complement recent theoretical investigations and contribute to an ongoing DFT study of the energetics of the assembly. The cluster growth and the self-assembly processes are successfully combined in achieving selective adsorption of CH 3SH on Co/Au(111) network--a prototype nanotechnology for directed self-assembly of molecular elements on large, multifunctional templates with a nm size unit cell. The thermal evolution of Co/Au(111) system is established, and CH3SH is shown to exhibit a novel interaction which leads to non-dissociative dimerization and to the formation of new ordered phases.
"],"dc:identifier":["https://scholars.unh.edu/dissertation/433"],"dc:subject":["Physics","Condensed Matter"],"dc:title":["Nanotemplate creation and self-assembly on the (111) surface of gold"],"thesis:degree_level":["Dissertation"],"thesis:degree_name":["Doctor of Philosophy"]},"updated_at":"2026-07-24T05:22:25Z"}