Sitio de la filial Buenos Aires de la Asociación Física Argentina
Icono RSS Icono Inicio
  • Post-doc en Quantum Lattices No lineales – UTINAM

    Publicado el julio 18th, 2008 Adán Sin comentarios aún ...

    Postdoc : Energy transfer in nonlinear quantum lattices : application to the vibrational energy flow in alpha-helices

    Location: UTINAM Institute UMR-CNRS 6213
    Université de Franche-Comté
    25030 Besançon, cedex, FRANCE

    Length: 9 months, starting as soon as possible considering the time needed by the person retained to get all the administrative papers necessary to work in France.

    Financial conditions: The credits obtained allow us to warrant a gross salary of 1839 ? per month, which in reality means 1508 ? per month transferred on the bank account.

    Requested profile: To develop these researches, we are looking for a candidate who has a strong background in either quantum non-linear dynamics, non equilibrium statistical mechanics, transport properties, dissipation, energy localization in molecular system or numerical analysis (i.e. ab initio calculations) applied to condensed or soft matter. In any case, the person retained must have completed his/her PHD since less than 2 years and NOT be of French nationality! Therefore, the applicants should enclose in their application, considerations allowing assessing the time they would need to get the authorization to work in France.

    Contact : The applicants should send a detailed CV and a publications list to Dr. POUTHIER Vincent at :
    vincent.pouthier@univ-fcomte.fr

    Summary of the project:
    Since the seminal work of Davydov on bioenergy transport in proteins, both theoretical and experimental evidences suggest that vibrational energy flow in alpha-helices may result from a polaron mechanism. The energy is mediated by the amide-I vibration which delocalizes along the peptide leading to the formation of an exciton called vibron. The vibron strongly interacts with the phonons describing the collective dynamics of the H-bond network. Therefore, its creation induces a lattice distortion and the vibron dressed by this distortion forms the so-called small polaron.

    In that context, the project concerns the study of the transport properties of polaron or bi-polaron in a lattice of H bonded peptide units by taking into account on the very short lifetime of the amide-I vibration. Indeed, most of the previous works were based on Hamiltonians that conserve the polaron population. However, in proteins, the amide-I energy relaxation is rather fast and recent experiments have clearly shown that the polaron lifetime is typically of about T1=1.5 ps. The relaxation originates from intramolecular energy redistribution due to the anharmonic coupling between each amide-I mode and a set of intramolecular normal modes whose displacements are strongly localized on the C=O groups. Therefore, the Complex Structure Dynamics group of the UTINAM Institute is looking for a candidate able to develop one of the two following topics :
    – Developing analytical models/calculations to study the transport properties in a finite site helix within a time convolutionless approach to account on the strong non markovian dynamics that arises from the discrete nature of the phonon energy spectrum.
    – Performing ab initio calculations to characterize the detailed relaxation pathways responsible for the energy relaxation of the amide-I mode in a model helix. These calculations will give rise to a theoretical model to represent the bath of intramolecular normal modes responsible for energy relaxation.


    Dr. POUTHIER Vincent
    Chargé de Recherche CNRS
    Institut UTINAM UMR CNRS 6213
    25030 BESANCON cedex
    tel. 33 3 81 66 64 77

  • Post-doc en Física Atómica UltraFría

    Publicado el julio 16th, 2008 Adán Sin comentarios aún ...

    Applications are invited for postdoctoral positions in ultracold atomic
    physics in the AtomChip Group of Dr. Ron Folman at Ben-Gurion University
    in Be?er Sheva, Israel: http://www.bgu.ac.il/atomchip/opportunities.html

    Our research involves producing, detecting, and manipulating quantum gases
    in specially fabricated micro-traps (so-called ?atomchips?), including
    Bose-Einstein condensates and fermion degenerate gases. Current projects
    include quantum interferometry and decoherence, novel atomchip materials
    and configurations (including superconductors), integrated photonics and
    molecular wires.

    For recent contributions see:
    http://www.bgu.ac.il/atomchip/physics/papers.htm

    The AtomChip Group and the BGU nano-fabrication facility
    http://www.bgu.ac.il/nanofabrication specialize in developing AtomChip
    micro-traps for fundamental physics and for new technological
    applications. Our PhD students and post-doctoral fellows are exposed to a
    wide range of fundamental theory (see our theory papers) as well as
    advanced technology including lasers, optics, electronics, computer
    interfaces, and nano-fabrication techniques. Applicants should have
    experience in several of these areas; previous experience in cold atoms
    will be particularly useful.

    The university is located in the middle of the exotic Israeli Negev desert
    with fascinating archaeology, geology, landscape and wildlife around. It
    is positioned 1.5 hours from Tel-Aviv and Jerusalem, 2.5 hours from the
    Red Sea, and an hour from both the Mediterranean and the Dead Seas. Its
    17,000 student campus is a major center for teaching and research, and is
    considered the number one choice of Israelis in terms of social life.
    Local sports include cliff climbing, scuba diving, desert hiking and
    biking, sky diving, wind surfing, and so on. For those interested in
    history, Be’er Sheva was first mentioned in the Bible in Genesis, chapter
    21, when Abraham dwelt here nearly 4,000 years ago.

    Applications should be received by July 18, 2008. We provide generous
    salary and relocation allowances for qualified candidates. Please send
    your curriculum vitae (including publication list) and the names and e-
    mail addresses of at least three professional references by e-mail to:

    Dr. Mark Keil
    Department of Physics
    Ben-Gurion University of the Negev
    email: keil@bgu.ac.il
    web: http://www.bgu.ac.il/atomchip/

  • Doctorado o Post-doc en Mecanismos de transporte de ADN

    Publicado el julio 16th, 2008 Adán Sin comentarios aún ...

    PhD and Postdoctoral Positions on the Mechanisms of DNA Transport by SpoIIIE
    The single-molecule biophysics group at the CBS laboratory has a PhD and a postdoctoral position available to work on the mechanisms of DNA transport by SpoIIIE, an AAA+ ring-ATPase from Bacillus subtilis.

    We are primarily interested on the mechanisms of molecular motors that transport DNA in and between bacteria. These motors use the energy of ATP hydrolysis to processively translocate DNA between cellular compartments or different cells, and belong to the large and diverse AAA+ family of ATPases. AAA+ motors tend to form closed multimeric rings in which ATP hydrolysis and substrate movement are closely correlated and coordinated. In particular, we want to understand the general mechanisms governing translocation directionality, transduction of energy into movement, and complex assembly. In general, we are interested in understanding the larger network of genetic interactions affecting the process of DNA transport in vivo.
    The project will focus on the mechanism of SpoIIIE, a DNA translocase responsible for chromosomal translocation during sporulation in Bacillus subtilis.

    We have so far studied the behaviour of SpoIIIE translocation in vitro using single-molecule magnetic tweezers and ensemble methods, and in vivo using a novel assay for monitoring DNA translocation in real-time (Nollmann et al., 2008). The project will (1) tackle the coupling of energy transduction into movement in vitro by developing and applying novel single-molecule manipulation and atomic force microscopy methods, and (2) investigate the properties of DNA translocation in vivo by applying newly developed fluorescence microscopy methods. The project will greatly profit from in house collaborations with our single-molecule fluorescence and atomic force microscopy groups and will involve travel to work with our collaborators in France, UK and the US.
    The successful candidate will have an interest in single-molecule manipulation and fluorescence microscopy. Experience in physics, molecular biology, or biochemistry will be required. Contact: Marcelo Nollmann (nollmann@cbs.cnrs.fr/, phone: +33 4 67 41 79 12)

    For more details, see the following link: http://www.cbs.cnrs.fr/SP/single-molecule-biophysics/

  • Post-doc en AMO physics- SIT

    Publicado el junio 27th, 2008 Adán Sin comentarios aún ...

    Stevens Institute of Technology
    Postdoctoral Position in
    AMO Physics

    The Department of Physics and Engineering Physics at Stevens Institute
    of Technology (SIT) invites applications for a Postdoctoral Research
    Associate position in theoretical AMO physics. Please see
    http://www.stevens.edu/main/home/ for a full information about SIT.

    The researcher will have the opportunity of working on two projects:
    (1) quantum control of molecular dynamics in stimulated Raman
    scattering using crafted laser pulses; consideration of decoherence
    effects; implementations in the CARS spectroscopy and microscopy to
    advance imaging techniques. See S. A. Malinovskaya, P.H. Bucksbaum,
    P.R. Berman, Phys. Rev. A 69, 013801 (2004); S.A. Malinovskaya, ibid
    73, 033416 (2006), S.A. Malinovskaya, V.S. Malinovsky, Opt. Lett. 32,
    707 (2007);
    (2) ultrafast dynamics induced by inner shell ionization, S.A.
    Malinovskaya, L.S. Cederbaum, Phys. Rev. A. 61, 42706 (2000).

    Salary is competitive, and the initial appointment will be for a period
    of one year, renewable for the second year upon mutual agreement.
    Candidates must possess skills in analytical and computer simulation.
    Their background must include quantum optics and molecular
    spectroscopy.

    Interested candidates are requested to send CV, publication list,
    statement of purpose as well as names and complete addresses of three
    referees to Prof. Svetlana Malinovskaya (smalinov@stevens.edu). Review
    of applications will take place immediately, but the position will
    remain open until filled. Stevens Institute of Technology is an Equal
    Opportunity/ Affirmative Action Employer and is strongly committed to
    building diversity within its community.

    —————————————-
    Svetlana Malinovskaya, Ph.D.
    Associate Professor of Physics
    Physics & Engineering Physics Dep.
    Stevens Institute of Technology
    Hoboken, NJ 07030 smalinov@stevens.edu
    Ph: (201)216-8094 FAX: (201)216-5638

  • Post-doc en Raman, Nanofotónica y Espectroscopía no lineal – Harvard

    Publicado el junio 27th, 2008 Adán Sin comentarios aún ...

    Postdoctoral Position in Surface-enhanced Raman Scattering (SERS), Nanophotonics, and
    Nonlinear Laser Spectroscopy

    The Mazur Group is looking for a recent Ph.D. to work on a nanophotonics project focused on
    single-molecule surface-enhanced Raman scattering (SERS), starting this summer. We will be
    developing novel techniques for fabricating and characterizing ultra-high (>1010) enhancement
    factor SERS substrates using femtosecond laser surface nanostructuring, colloidal nanoparticle
    synthesis, and optical antenna engineering.

    Experience in at least one of the following areas is required: nanofabrication, laser (fluorescence,
    Raman, surface-enhanced Raman) spectroscopy, nonlinear optics, polymer chemistry, surface
    chemistry, or microfluidics. The ideal candidate will have a recent Ph.D. in physics, chemistry,
    applied physics, optics, electrical engineering, biophysics, or a related field. Excellent written and
    oral communication skills are a must, along with the ability to work effectively in a
    multidisciplinary research lab. Applications received by April 1, 2008 will be given first
    consideration. The position will remain open until filled.

    The initial appointment will be for 1 year, with the possibility of extension for up to 3 years.

    Applicants should submit a cover letter, a statement of research interest, a CV which includes a
    summary of research experience and publications, and two letters of recommendation at the
    following web address

    http://mazur-www.harvard.edu/apply

    Please note that the application form is general. For position, select “postdoc” and be aware that the open position comes with financial support.

    For more information on our work, please see http://mazur-www.harvard.edu

    Eric Mazur Balkanski
    Professor of Physics and Applied Physics

    Harvard University
    29 Oxford Street
    Cambridge, MA 02138
    Phone: +1 617 495-8729
    Fax: +1 240 255-4622
    AIM: eric_mazur@mac.com

    http://mazur-www.harvard.edu

  • Post-doc en Optoelectrónica – Southampton, UK

    Publicado el mayo 2nd, 2008 Adán Sin comentarios aún ...

    Research Fellow in Optical Super-Resolution & Nearfield Research
    Optoelectronics Research Centre, University of Southampton, UK

    www.nanophotonics.org.uk/niz

    We are looking for a post-doctoral researcher with high academic promise to work on developing a new optical imaging concept.

    This is a 4 year project sponsored by the Science and Engineering Research Council (UK) under the Basic Technology Research Programme and involves collaboration with the Universities of Bristol and St. Andrews and Rutherford Appleton Laboratory.

    You will have a keen interest in developing new physical ideas from the proof-of-principle stage to practical applications. A background in optics and opto-electronics is required. Experience in scanning microscopies, nano-science and computational physics will be an advantage. The ability to work as part of a highly interactive research team is essential.

    The length of the initial appointment is 24 months, with a possibility for further extension and excellent opportunities to progress.

    For informal enquiries please write to Professor N.Zheludev, Deputy Director, Optoelectronics Research Centre, University of Southampton, (n.i.zheludev@soton.ac.uk).

    The closing date for this position is 1 June 2008 at 12 midday. Please quote reference number 2276-08-E on all correspondence.

    See more details at:
    http://www.jobs.soton.ac.uk/soton/jobboard/JobDetails.aspx?__ID=*FD9410E2C5128C63
    ……………………..

    Professor N.Zheludev
    Deputy Director (Physics)
    Optoelectronics Research Centre
    University of Southampton
    SO17 1BJ, UK
    voice: +442380593566
    secretary: +442380594522 (Mrs Jennifer Morley)
    Web: www.nanophotonics.org.uk/niz
    e-mail: n.i.zheludev@soton.ac.uk

  • Post doc: laser diagnostics

    Publicado el septiembre 21st, 2007 Adán Sin comentarios aún ...

    Fecha de anuncio: 21/9/07
    Empleador – Ubicación: Institute of Combustion Technology (German Aerospace Center, DLR)

    Applications are invited for a postdoc position in our laser diagnostics
    group in the Institute of Combustion Technology (German Aerospace
    Center, DLR), dealing with experimental studies of combustion processes
    using oxyfuels. The research is devoted to understand processes inside
    future gas turbine combustors. The position is immediately vacant and is
    available for 3 years. The salary is based on German standards.
    Lee la entrada completa »