{"id":11,"date":"2012-09-05T11:20:44","date_gmt":"2012-09-05T15:20:44","guid":{"rendered":"https:\/\/people.clas.ufl.edu\/template\/?page_id=11"},"modified":"2026-03-19T08:49:25","modified_gmt":"2026-03-19T12:49:25","slug":"course-1","status":"publish","type":"page","link":"https:\/\/people.clas.ufl.edu\/Micha\/courses\/course-1\/","title":{"rendered":"Ongoing and Recent Research"},"content":{"rendered":"\r\n<section class=\"fullwidth-text-block\">\r\n\t<div class=\"container px-0 pt-5\">\r\n\t\t<div class=\"row align-items-start\">\r\n\t\t\t<div class=\"col-12\">\r\n\t\t\t\t\n<h1 class=\"wp-block-heading\">Ongoing and Recent Research<\/h1>\n\n\n\n<h3 class=\"wp-block-heading\">Research Work (1996 &#8211; 2021)<\/h3>\n\n\n\n\n\n\n\n<ul class=\"wp-block-list\"><li>\n<h4>Light absorption and electronic relaxation following photoexcitation of titanium dioxide with adsorbed silver clusters (M. P. deLara-Castells, D. S. Kilin, T. Vazhappilly, and D. A. M.)<a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/TiO2slabs-pict2021.png\" rel=\"attachment wp-att-248\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-248 size-full aligncenter\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/TiO2slabs-pict2021.png\" alt=\"\" width=\"800\" height=\"450\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/TiO2slabs-pict2021.png 800w, https:\/\/people.clas.ufl.edu\/Micha\/files\/TiO2slabs-pict2021-300x169.png 300w, https:\/\/people.clas.ufl.edu\/Micha\/files\/TiO2slabs-pict2021-768x432.png 768w, https:\/\/people.clas.ufl.edu\/Micha\/files\/TiO2slabs-pict2021-200x113.png 200w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/h4>\n<\/li>\n<li>\n<h4>Photoconductivity of silicon surfaces nanostructured with silver clusters (D. S. Kilin, T. Vazhappilly, R. Hembree, and D. A. M.)<\/h4>\n<\/li>\n<li>\n<h4>Optical properties of nanostructured semiconductor surfaces and of silicon quantum dots (D. S. Kilin, A. S. Leathers, J. Ramirez, C. Obara, D. Arlund, T. LaJoie, T. Vazhappilly, R. Hembree, M. Mavros, D. Stewart, R. Pulido, H. Freitag, J. Boulos, N. Vinson, and D. A. M.)<\/h4>\n<h4><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/electrons.jpg\" rel=\"attachment wp-att-165\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-165\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/electrons.jpg\" alt=\"\" width=\"230\" height=\"181\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/electrons.jpg 230w, https:\/\/people.clas.ufl.edu\/Micha\/files\/electrons-200x157.jpg 200w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/><\/a> <a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/photon-energy.jpg\" rel=\"attachment wp-att-166\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-166 size-full alignright\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/photon-energy.jpg\" alt=\"\" width=\"428\" height=\"230\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/photon-energy.jpg 428w, https:\/\/people.clas.ufl.edu\/Micha\/files\/photon-energy-300x161.jpg 300w, https:\/\/people.clas.ufl.edu\/Micha\/files\/photon-energy-200x107.jpg 200w\" sizes=\"auto, (max-width: 428px) 100vw, 428px\" \/><\/a><br>\n<em>Above:<\/em> Isocontours of photoinduced electron and hole populations vs energy level (V) and vs log(t) (H) for a Ag cluster adsorbed on a Si slab as they relax after excitation.<\/h4>\n<h4><em>Right<\/em>: Real and imaginary parts of the dielectric function for a Si slab photoexcited by light.<\/h4>\n<\/li><\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">Above: Si29H36 and Si35H36 quantum dots with P and Al dopants inside and outside, and oriented; rates of energy transfer have been calculated from TDDFT and the Foerter equation for electronic energy transfer.<\/h4>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/orientation.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"153\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/orientation.jpg\" alt=\"\" class=\"wp-image-167\" style=\"width:576px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/orientation.jpg 576w, https:\/\/people.clas.ufl.edu\/Micha\/files\/orientation-300x80.jpg 300w, https:\/\/people.clas.ufl.edu\/Micha\/files\/orientation-200x53.jpg 200w\" sizes=\"auto, (max-width: 576px) 100vw, 576px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Amorphous-Si.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"212\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Amorphous-Si-300x212.jpg\" alt=\"\" class=\"wp-image-168\" style=\"width:300px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/Amorphous-Si-300x212.jpg 300w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Amorphous-Si-200x142.jpg 200w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Amorphous-Si.jpg 421w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Photovoltage.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"212\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Photovoltage-300x212.jpg\" alt=\"\" class=\"wp-image-169\" style=\"width:300px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/Photovoltage-300x212.jpg 300w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Photovoltage-200x141.jpg 200w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Photovoltage.jpg 360w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Above: Amorphous Si (left) and photovoltage (right) compared with experiment (red dots).<\/h4>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Ag3Si-H-Slab.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"243\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Ag3Si-H-Slab.jpg\" alt=\"\" class=\"wp-image-170\" style=\"width:230px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/Ag3Si-H-Slab.jpg 230w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Ag3Si-H-Slab-200x211.jpg 200w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Charge-transfer-over-time.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"212\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Charge-transfer-over-time-300x212.jpg\" alt=\"\" class=\"wp-image-171\" style=\"width:300px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/Charge-transfer-over-time-300x212.jpg 300w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Charge-transfer-over-time-200x141.jpg 200w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Charge-transfer-over-time.jpg 337w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Indirect-electron-transfer.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"212\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Indirect-electron-transfer-300x212.jpg\" alt=\"\" class=\"wp-image-172\" style=\"width:300px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/Indirect-electron-transfer-300x212.jpg 300w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Indirect-electron-transfer-200x141.jpg 200w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Indirect-electron-transfer.jpg 382w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Above: Ag3Si:H slab (left), indirect electron transfer (middle) and charge transfer over time (right).<\/h4>\n\n\n\n<ul class=\"wp-block-list\"><li>\n<h4>Dissipative dynamics of molecular systems and materials using the density matrix (Z. Yi, A. Santana, B.\u00a0<span class=\"SpellE\">Thorndyke<\/span>, A. Leathers, D. Kilin, R. Hembree, and D. A. M.)<\/h4>\n<\/li><\/ul>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Fluence.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"198\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Fluence-300x198.jpg\" alt=\"\" class=\"wp-image-173\" style=\"width:300px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/Fluence-300x198.jpg 300w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Fluence-200x132.jpg 200w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Fluence.jpg 420w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Molecular-Systems.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"167\" height=\"281\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Molecular-Systems.jpg\" alt=\"\" class=\"wp-image-174\" style=\"width:167px;height:auto\"><\/a><\/figure>\n\n\n\n\n\n\n\n\n\n<ul class=\"wp-block-list\"><li>\n<h4>Electronic rearrangement and light emission in collisions of atomic ions with atoms, using time-dependent molecular orbitals and time-dependent Hartree-Fock theory.(K. Runge, H. DaCosta and D. A. M.; B. Thorndyke; A. Reyes; A. Pacheco)<\/h4>\n<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Collision.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"230\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Collision.jpg\" alt=\"\" class=\"wp-image-175\" style=\"width:230px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/Collision.jpg 230w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Collision-150x150.jpg 150w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Collision-200x200.jpg 200w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Light-emission-from-pH.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"287\" height=\"224\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/Light-emission-from-pH.jpg\" alt=\"\" class=\"wp-image-176\" style=\"width:287px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/Light-emission-from-pH.jpg 287w, https:\/\/people.clas.ufl.edu\/Micha\/files\/Light-emission-from-pH-200x156.jpg 200w\" sizes=\"auto, (max-width: 287px) 100vw, 287px\" \/><\/a><\/figure>\n\n\n\n<figure class=\"wp-block-image size-medium is-resized\"><a href=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/pH-slow-collision.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"226\" src=\"http:\/\/people.clas.ufl.edu\/Micha\/files\/pH-slow-collision-300x226.jpg\" alt=\"\" class=\"wp-image-177\" style=\"width:300px;height:auto\" srcset=\"https:\/\/people.clas.ufl.edu\/Micha\/files\/pH-slow-collision-300x226.jpg 300w, https:\/\/people.clas.ufl.edu\/Micha\/files\/pH-slow-collision-200x151.jpg 200w, https:\/\/people.clas.ufl.edu\/Micha\/files\/pH-slow-collision.jpg 301w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n\n\n\n<ul class=\"wp-block-list\"><li>\n<h4>Electron transfer in the scattering of alkali ions by metal surfaces of W, Ni and Cu. Calculation of cross sections for neutralization and for orbital polarization. ( C. DeMelo, B. Kirtman, and D. A. M.; A. Pacheco; A. Leathers)<\/h4>\n<\/li>\n<li>\n<h4>Energy transfer in the scattering of atoms by surfaces and diatomic adsorbates, leading to vibrational excitation of adsorbates. Applications to scattering of Li and He beams from W surfaces and from CO adsorbed on Ni and Cu .(S. Miret-Artes, J. L. Vega, J. P. Toennies, and D. A. M.; Z. Parra and D.A.M.)<\/h4>\n<\/li>\n<li>\n<h4>Photodesorption by visible and UV radiation of diatomic molecules adsorbed on surfaces, such as CO on Ni and Cu metals. Calculation of line shapes in steady-state experiments, and of lifetimes in pulsed light experiments.(D. Beksic; S. Miret-Artes; J. Sund; Z. Yi; A. Salam; A. Santana-Vargas; and D. A. M.; S. Villaume; N. Finck)<\/h4>\n<\/li>\n<li>\n<h4>Molecular rearrangement involving electronic transition in collisions of hydrogen, alkali and alkali-earth atoms with atoms and diatomics, in terms of self-consistent eikonal methods, and algebraic methods.( G. Delgado-Barrio, M. Fernandez, and D. A. M.)<\/h4>\n<\/li>\n<li>\n<h4>Molecular photodissociation by visible and UV radiation, particularly of C-I bonds in polyatomic molecules. Calculation of line shapes.(C. Stodden and D. A. M.)<\/h4>\n<\/li>\n<li>\n<h4>Energy transfer in collisions of hyperthermal hydrogen, helium and alkali atoms with molecules and surfaces, using a general collisional time-correlation function approach including dissipation. Calculation of cross sections measured in time-of-flight experiments, and of final distributions of product states in gases.(H. Kim; D. Rojas; S. Miret-Artes, J. L. Vega; and D. A. M.)<\/h4>\n<\/li>\n<li>\n<h4>Isomerization dynamics of atomic clusters of transition metal ions in rare gas atoms (R. Asher, P. Brucat, and D. A. M.)<\/h4>\n<\/li>\n<li>\n<h4>Electronic spectra of atoms excited in atomic and molecular clusters.(G. Diercksen and D. A. M.; B. Thorndyke; A. Leathers)<\/h4>\n<\/li>\n<li>\n<h4>Visualization and animation of collisional electron transfer, and of photodesorption.(K. Runge; S. Wallace; J. Sund; Z. Yi; D. A. M.; B. Thorndyke; A. Pacheco)<\/h4>\n<\/li><\/ul>\n\n\n\r\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t<\/div>\r\n<\/section>\r\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":11,"featured_media":0,"parent":8,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"featured_post":"","footnotes":"","_links_to":"","_links_to_target":""},"class_list":["post-11","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/people.clas.ufl.edu\/Micha\/wp-json\/wp\/v2\/pages\/11","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/people.clas.ufl.edu\/Micha\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/people.clas.ufl.edu\/Micha\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/people.clas.ufl.edu\/Micha\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/people.clas.ufl.edu\/Micha\/wp-json\/wp\/v2\/comments?post=11"}],"version-history":[{"count":9,"href":"https:\/\/people.clas.ufl.edu\/Micha\/wp-json\/wp\/v2\/pages\/11\/revisions"}],"predecessor-version":[{"id":286,"href":"https:\/\/people.clas.ufl.edu\/Micha\/wp-json\/wp\/v2\/pages\/11\/revisions\/286"}],"up":[{"embeddable":true,"href":"https:\/\/people.clas.ufl.edu\/Micha\/wp-json\/wp\/v2\/pages\/8"}],"wp:attachment":[{"href":"https:\/\/people.clas.ufl.edu\/Micha\/wp-json\/wp\/v2\/media?parent=11"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}