Our group meetings are open to all faculty, graduate students, and undergraduate students who are interested in Optical Physics. Visitors are welcome, please inquire. Group meetings are held on Fridays at 4pm in Weniger 305, unless indicated otherwise. See the page with Schedules and Group Info for some details about our group meetings for this term.
May 19 Andy's and Whitney's paper entitled “Novel functionalized pentacene and anthradithiophene derivatives: photoconductive and fluorescent properties” has been accepted for presentation at the Organic Thin Film Symposium and selected for Sci-Mix poster session at the ACS National Meeting in Philadelphia, August 20-24, 2008.
May 15 We thank ONAMI for selecting our proposal entitled “Biochemical Sensors and Integrated Measurement Platform Controlled by Optical Tweezers and Microfluidics” (in collaboration with Profs. D. McIntyre, V. Remcho, A. Shvarev, S. Reed, S. Prasad) for funding.
May 5 Jonathan's paper entitled “Photoconductivity in organic thin films: from picoseconds to seconds after excitation” has been accepted for publication in Journal of Applied Physics.
May 1 Oksana will give an invited talk entitled “Organic (opto)electronic materials: understanding charge carrier dynamics” at NW APS meeting in Portland, OR, May 16–17, 2008.
Apr 25 Oksana will give an invited talk entitled “Photoexcited charge carrier and exciton dynamics in organic thin films” at ICONO10 in Santa Fe, NM, May 19–24, 2008.
Apr 17 Congratulations to Whitney who passed the comp exam !!
Apr 15 Guy Cutting, an undergraduate student in computational physics, joins the group. Guy will develop software for fluorescence lifetime imaging. Welcome !!!!!!!!
Mar 25 We thank the OSU Research Office for funding our GRF proposal (in collaboration with Prof. S. Rao) entitled “The unanticipated effects of sunlight-induced fluorescence on native bee pollinator behavior.”
Mar 20 Oksana is scheduled to give an invited talk “Photoexcited charge carrier and exciton dynamics in organic thin films” at ICONO at Santa Fe, NM, on May 22.
Mar 18 Oksana visited Washington State Univeristy and presented a colloquium entitled “Organic optoelectronic materials: understanding charge carrier dynamics.”
Mar 16 Whitney Buchanan joins the group. Welcome !!!!!!!!
Feb 25 Andy's paper entitled “Temperature Dependent Properties of Novel Functionalized Anthradithiophene and Dicyanomethylenedihydrofuran Derivatives” and Mark's paper entitled “Optical tweezers with resonant particles” are accepted for presentation at CLEO/QELS (San Jose, CA, May 2008) (papers CFG2 and JWA122, respectively).
Feb 20 Oksana's collaborative paper entitled “Fabrication and optical properties of nanoscale arrays of Au and Pd in polymers” (S.V. Atre, S. Bhowmik, O.P Valmikanathan, and O. Ostroverkhova) is accepted for presentation at the NSTI meeting (Boston, MA, June 2008)
Feb 6 We thank the NSF–DMR for awarding us with a CAREER grant for a project entitled “Charge Carrier Dynamics in Organic Semiconductors: from Macroscopic to Microscopic Level.”
Nov 6 Congratulations to Mark K. who passed his Ph.D. oral exam !!
Aug 15 We thank the NSF/DMR for funding our MRI proposal on acquisition of a high-performance NSOM (in collaboration with Profs. M. Deutch, G. Richmond, and W. Roberts).
Jul 15 We thank ONAMI/ONR for funding our project “Beyond Sensing under Equilibrium: Photoresponsive Nanoprobes for Rapid Localized Acid-Base Titration” (in collaboration with Profs. A. Shvarev and D. McIntyre).
Jul 15 We thank ONAMI/ONR for funding our project “Identification, imaging and manipulation of charged states in organic semiconductors: from macroscopic to microscopic optoelectronic devices” (in collaboration with Profs. G. Schneider, E. Minot and D. McIntyre).
May 22 Congratulations to Mark K. for receiving the Oregon Sports Lottery Scholarship Award !!!!
May 14 Jonathan's paper entitled “Fast photoresponse of functionalized pentacene and anthradithiophene thin films” submitted to MRS Proceedings has been accepted.
May 9 We thank the Research Office at OSU for funding our proposal targeting acquisition of the high-sensitivity EMCCD camera.
May 6–11 Andy and Mark attended CLEO/QELS in Baltimore, MD, and presented posters entitled “Fluorescent and photoconductive properties of functionalized pentacene and anthradithiophene derivatives” and “Optical field enhancement in tweezer trapping”, respectively.
May 1 Oksana presented a progress report at the ONAMI meeting in Portland, OR.
Apr 16 We thank ONAMI/ONR for funding our projects entitled “Charge carrier dynamics in organic semiconductors at nanoscales: towards optoelectronic nanoswitches” (in collaboration with Profs. J. Anthony and R. Twieg), and “Optical field enhancement in tweezer trapping and single-molecule spectroscopy” (in collaboration with Prof. D. McIntyre).
Apr 9 Jonathan presented a poster entitled “Fast photoresponse of functionalized pentacene and anthradithiophene thin films” at the MRS Spring meeting in San Francisco, CA.
Apr 9–13 Jonathan and Andy attended the MRS Spring meeting in San Francisco, CA.
Mar 1 Congratulations to Sam for a NREIP Summer Internship Award from the Office of Naval Research !!
Mar 1 Mark K.'s paper “Optical Field Enhancement In Tweezer Trapping” is accepted for presentation at CLEO/QELS in Baltimore, Md, May 6-11, 2007.
Feb 27 Congratulations to Jonathan for passing his oral exam !!
Jan 18 Jonathan's abstract “Fast photoresponse in functionalized pentacene derivatives” has been accepted for presentation at the MRS meeting in April 2007 in San Francisco, CA.
Jan 17–19 Andy and Mark K. attended a Workshop on Advanced Microscopy and Imaging at UC Berkeley.
Dec 22 Oksana's paper “Anisotropy of transient photoconductivity in functionalized pentacene single crystals,” published in Applied Physics Letters 89, 192113 (2006), has been selected for publication in the Virtual Journal of Ultrafast Science (Dec 2006 issue), and in The Virtual Journal of Terahertz Science and Technology (Nov 2006).
Dec 1 We thank the AFOSR for supporting our collaboration with Prof. Peyghambarian group at the College of Optical Sciences (Tucson, AZ) on 3D holographic updateable displays.
Nov 10 Oksana's recent Applied Physics Letters paper “Anisotropy of transient photoconductivity in functionalized pentacene single crystals” has been published online: Appl. Phys. Lett. 89, 192113 (2006).
Oct 16 Oksana gave a seminar on ultrafast carrier dynamics in organic semiconductors at the Oregon Center for Optics.
Oct 12 Congratulations to Andy Platt and Mark Kendrick for passing the comprehensive exam !!
Sep 28 Oksana's most recent paper “Anisotropy of transient photoconductivity in functionalized pentacene single crystals” has been accepted for publication in Applied Physics Letters.
Sep 15 Jonathan presented a poster entitled “Functionalized pentacene: direct measurement of fast photoresponse” at the Oregon Center for Optics annual meeting.
Sep 14–15 Andy, Jonathan, and Mark K. attended the annual meeting at the Oregon Center for Optics.
Sep 10–14 Oksana presented an invited talk entitled “Ultrafast carrier dynamics in organic semiconductors” at Organic Thin Films for Photonic Applications Symposium in San Francisco, CA.
Jul 1 Welcome to our new undergraduate member Sam Peterson.
Jun 16 Congratulations to our undergraduate members Joe Peterson and Zack Peterson for successfully defending their senior theses, and for graduating with B.Sc. degree in physics!
May 16 Oksana's most recent paper “Ultrafast carrier dynamics in pentacene, functionalized pentacene, tetracene, and rubrene single crystals,” Applied Physics Letters, 88, 162101 (2006), has been selected for publication in the May 2006 issue of the Virtual Journal of Ultrafast Science, and in The Virtual Journal of Terahertz Science and Technology (April 2006).
Apr 20 Congratulations to our undergraduate group member Mark Mazurier who received URISC Summer 2006 Award (funding) for his research project “Photophysical Properties of Organic Semiconductors” !!!
Apr 19 We thank Spiricon, Inc. for donating us a laser beam analyzer, which will be used in FROG ultra-short pulse analyzing and in monitoring the laser beam quality.
Apr 16 Oksana's paper “Ultrafast carrier dynamics in pentacene, functionalized pentacene, tetracene and rubrene single crystals” has been published in Applied Physics Letters.
Apr 6–7 Oksana gave a seminar at the College of Optical Sciences in Tucson, Arizona.
Apr 3 Oksana is invited to give a talk at the Organic Thin Films Symposium, San Francisco, Sept. 10-14, 2006.
Mar 13 We thank Tektronix, Inc. for making us a charitable contribution of the 50GHz digital sampling system (CSA8200 mainframe with 80E01 sampling head) for the research of ultrafast carrier dynamics in organic semiconductors.
Jan 18 Oksana's paper entitled “Ultrafast carrier dynamics in organic semiconductors” has been accepted for presentation at the MRS meeting in San Francisco, CA, April 17-21, 2006.
Dec 29 The book “Photophysics of Molecular Materials: from Single Molecules to Single Crystals”, containing Oksana's contribution (chapter 7, "Probing organic semiconductors with terahertz pulses", with F.A. Hegmann and D. G. Cooke), is now available from John Wiley & Sons.
Dec 23 We thank the Petroleum Research Fund for funding our research project entitled “Charge transfer in organic semiconductors: from microscopic to macroscopic electronic properties on all time scales” !!
Dec 2 We will hold a mini-reception (Friday 4–5:30 pm, in Weniger 101), as the lab renovation is being completed. Please join us, everyone is invited and welcome !
Oct 17–19 Oksana gave an invited talk at Organic Thin Films Conference, OSA Annual Meeting in Tucson, AZ. Title: “Ultrafast photoconductivity in organic semiconductors.” She also chaired the session “Electro-optic modulators and devices.”
Sep 19 Oksana's most recent paper “Optical and transient photoconductive properties of pentacene and functionalized pentacene thin films: Dependence on film morphology,” Journal of Applied Physics 98, 033701 (2005), has been selected for the September 2005 issue of Virtual Journal of Ultrafast Science.
Sep 15–16 Oksana was one of the OSU representatives at the ONAMI Leadership Retreat. Regional strategy and funding plans and opportunities were discussed. She will brief the group at the next meeting (Sep 22nd).
Sep 7–9 Jonathan and Andrew attended the Workshop on Optical Physics, at the Oregon Center for Optics. They presented a report at the following group meeting (Sep 13th).
July 19–23 Oksana gave an invited talk at 10th International Conference on Photorefractive Effects, Materials and Devices in Sanya, Hainan, P.R. China. Title: “Recent advances in photorefractive organic materials.”