UT.Physics.Seminars pinned «سمینار با نیم ساعت تاخیر -ساعت ۱۶- در کلاس ۱۴ برگزار میگردد.»
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تذکر درباره زمان و مکان: ساعت ۱۲:۳۰ و کلاس ۱۴
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سخنران سمینار مشترک ماده چگال و اپتیک + فیزیک نشینی، روز یکشنبه پیش رو در دانشکده فیزیک، به تاریخ 22ر07ر1397، آقای مازیار حیدری، دانشجوی دکتری از انستیتو ماکس پلانک شهر ماینز کشور آلمان خواهند بود. مشخصات سمینار به شرح زیراست.
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دریافت اطلاعیه سمینارها از طریق تلگرام: https://telegram.me/UTPhysicsWeeklySeminars
Title: To be in equilibrium, or not to be, that is the question
Speaker: Maziar Heidari (Max Planck Institute for Polymer Research, Mainz, Germany)
Date/Time: Monday, 1397/07/22, 12:30 یکشنبه
Place: Conference Hall, Department of Physics, University of Tehran, Kargar Avenue, 19th Street, Tehran.
Abstract:
Calculation of the solvation free energy (SFE) is crucial in many biological processes and geochemical cycles, such as characterisation of protein-ligand binding or exchanging pathway of the persistent organic pollutants between atmosphere and ocean. Here, we introduce a method based on the Hamiltonian adaptive resolution simulation (H-AdResS) to compute the SFE of molecules, using equilibrium statistics and a non-equilibrium identity. In the H-AdResS scheme, solvent molecules are treated concurrently with atomistic and ideal gas resolution according to a generalized Hamiltonian. The two resolutions are coupled through a transition layer in which compensating forces are applied on the molecules within to enforce constant chemical potential throughout the simulation domain. Once an equilibrium uniform density across the resolutions is reached, the molecule/solute is pulled and sampled from atomistic region (solvated state) into ideal gas region (unsolvated state). The pulling process is carried out either in quasi-static equilibrium or in out-of-equilibrium. Using umbrella sampling for the former and Jarzynski's equality for the latter, the resolution-dependent free energy profile is constructed and compared, and subsequently, SFE of the molecule is obtained simply by subtracting the free energies of the two states.
سخنران سمینار مشترک ماده چگال و اپتیک + فیزیک نشینی، روز یکشنبه پیش رو در دانشکده فیزیک، به تاریخ 22ر07ر1397، آقای مازیار حیدری، دانشجوی دکتری از انستیتو ماکس پلانک شهر ماینز کشور آلمان خواهند بود. مشخصات سمینار به شرح زیراست.
با تشکر
واعظ
*اگر میخواهید از این لیست ایمیل اطلاعیه سمینارها حذف شوید، لطفا با من تماس بگیرید.
*If you would like to stop receiving seminar announcements, simply contact me.
دریافت اطلاعیه سمینارها از طریق تلگرام: https://telegram.me/UTPhysicsWeeklySeminars
Title: To be in equilibrium, or not to be, that is the question
Speaker: Maziar Heidari (Max Planck Institute for Polymer Research, Mainz, Germany)
Date/Time: Monday, 1397/07/22, 12:30 یکشنبه
Place: Conference Hall, Department of Physics, University of Tehran, Kargar Avenue, 19th Street, Tehran.
Abstract:
Calculation of the solvation free energy (SFE) is crucial in many biological processes and geochemical cycles, such as characterisation of protein-ligand binding or exchanging pathway of the persistent organic pollutants between atmosphere and ocean. Here, we introduce a method based on the Hamiltonian adaptive resolution simulation (H-AdResS) to compute the SFE of molecules, using equilibrium statistics and a non-equilibrium identity. In the H-AdResS scheme, solvent molecules are treated concurrently with atomistic and ideal gas resolution according to a generalized Hamiltonian. The two resolutions are coupled through a transition layer in which compensating forces are applied on the molecules within to enforce constant chemical potential throughout the simulation domain. Once an equilibrium uniform density across the resolutions is reached, the molecule/solute is pulled and sampled from atomistic region (solvated state) into ideal gas region (unsolvated state). The pulling process is carried out either in quasi-static equilibrium or in out-of-equilibrium. Using umbrella sampling for the former and Jarzynski's equality for the latter, the resolution-dependent free energy profile is constructed and compared, and subsequently, SFE of the molecule is obtained simply by subtracting the free energies of the two states.
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Announcements of Weekly Seminars, Department of Physics, University of Tehran.
Forwarded from انجمن فیزیک ایران
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ارسال مقاله مختص اعضای انجمن است.هنگام ارسال مقاله، چکیده انگلیسی مقاله را به صورت Word مطابق این فرمت و اصل مقاله چاپ شده را به صورت PDF در سامانه بارگزاری فرمایید.توجه فرمایید درصورتیکه فرمت فایل word مطابق این فرمت نباشد مقاله از پروسه ی بررسی خارج می شود.درهنگام ارسال مقاله نیاز به درج عنوان ...
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✅ به کانال خبرى انجمن فیزیک ايران بپيوندید:
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شیوه فرستادن چکیده به گردهمایی سراسری فیزیک ایران
Dear Colleagues,
we would like to inform you about the ICTP summer school,
Advances in Condensed Matter Physics:
New trends and Materials in Quantum Technologies
to be held in May 07 -15, 2019 in Samarkand, Uzbekistan:
http://acmp2019.las.uz/
The School is co-organized by
Vladimir Falko (Manchester)
Mikhail Kiselev (ICTP, Trieste)
Davron Matrasulov (Tashkent)
The lectures will be presented by the following confirmed speakers:
Anton Akhmerov
Giulio Casati
Rosario Fazio
Karsten Flensberg
Yuval Gefen
Leonid Glazman
Mikhail Katsnelson
Charles Marcus
Thierry Martin
Laurens Molenkamp
Felix Von Oppen
Yuval Oreg
Francois Peeters
Subir Sachdev
Ady Stern
The topics to be covered are
Graphene, two-dimensional materials and their heterostructures;
Majorana fermions;
Topological insulators;
Quantum hall effect;
Novel superconducting materials;
Quantum entanglement and quantum computing;
Quantum networks and their applications;
Quantum optics and cold atoms;
Quantum metrology.
With best regards,
Olga Karpova,
local Secretary of School
***********************
Olga Karpova
ICTP Summer School
“Advances in Condensed Matter Physics:
New trends and Materials in Quantum Technologies”
http://acmp2019.las.uz
we would like to inform you about the ICTP summer school,
Advances in Condensed Matter Physics:
New trends and Materials in Quantum Technologies
to be held in May 07 -15, 2019 in Samarkand, Uzbekistan:
http://acmp2019.las.uz/
The School is co-organized by
Vladimir Falko (Manchester)
Mikhail Kiselev (ICTP, Trieste)
Davron Matrasulov (Tashkent)
The lectures will be presented by the following confirmed speakers:
Anton Akhmerov
Giulio Casati
Rosario Fazio
Karsten Flensberg
Yuval Gefen
Leonid Glazman
Mikhail Katsnelson
Charles Marcus
Thierry Martin
Laurens Molenkamp
Felix Von Oppen
Yuval Oreg
Francois Peeters
Subir Sachdev
Ady Stern
The topics to be covered are
Graphene, two-dimensional materials and their heterostructures;
Majorana fermions;
Topological insulators;
Quantum hall effect;
Novel superconducting materials;
Quantum entanglement and quantum computing;
Quantum networks and their applications;
Quantum optics and cold atoms;
Quantum metrology.
With best regards,
Olga Karpova,
local Secretary of School
***********************
Olga Karpova
ICTP Summer School
“Advances in Condensed Matter Physics:
New trends and Materials in Quantum Technologies”
http://acmp2019.las.uz
در صورت علاقه به دریافت بعضی از اطلاعیه ها (کنفرانسها، موقعیت های پسا دکتری و دکتری) می توانید به عضویت لیست پست الکترونیک گروه ماده چگال در Yahoo در آیید با ارسال ایمیل به:
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آدرس پستهای گروه:
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آدرس پستهای گروه:
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سخنران سمینار مشترک ماده چگال و اپتیک دوشنبه پیش رو در دانشکده فیزیک، به تاریخ 26ر09ر1397 و ساعت 15:30، آقای دکتر محمد جوادی، پژوهشگر پسی دکتری از دانشکده فیزیک دانشگاه تهران خواهند بود. مشخصات سمینار به شرح زیراست.
با تشکر
واعظ
دریافت اطلاعیه سمینارها از طریق تلگرام: https://telegram.me/UTPhysicsWeeklySeminars
Title: Signatures of surface conductivity in zinc oxide nanowires
Speaker: Mohammad Javadi (Department of Physics, UT)
Date/Time: Monday, 1397/09/26, 15:30 دوشنبه
Place: Conference Hall, Department of Physics, University of Tehran, Kargar Avenue, 19th Street, Tehran.
Abstract:
Regarding to the large surface-to-volume ratio, the overall behavior of a nanostructured semiconductor is a complicated superposition of the bulk and surface effects. Practically, it is difficult task to distinguish between the bulk and the surface effects. Though, the surface contribution in the overall response of a nanostructure may be distinguished from the bulk effects via the measurements done in AC domain. In this talk, I will present our recent experimental findings about the conduction mechanism of zinc oxide nanowires. The response of nanowires to the optical & thermal excitations is critically related to the driving AC frequency. The nanowires exhibit a continuous transition from positive to negative photoconductivity as a function of the driving frequency. In a similar manner, ZnO nanowires display a frequency-driven metal-insulator transition at the room temperature. Our experiments suggest that the both transitions are indeed indications of a transition of conductivity from the bulk conduction to the surface conduction.
سخنران سمینار مشترک ماده چگال و اپتیک دوشنبه پیش رو در دانشکده فیزیک، به تاریخ 26ر09ر1397 و ساعت 15:30، آقای دکتر محمد جوادی، پژوهشگر پسی دکتری از دانشکده فیزیک دانشگاه تهران خواهند بود. مشخصات سمینار به شرح زیراست.
با تشکر
واعظ
دریافت اطلاعیه سمینارها از طریق تلگرام: https://telegram.me/UTPhysicsWeeklySeminars
Title: Signatures of surface conductivity in zinc oxide nanowires
Speaker: Mohammad Javadi (Department of Physics, UT)
Date/Time: Monday, 1397/09/26, 15:30 دوشنبه
Place: Conference Hall, Department of Physics, University of Tehran, Kargar Avenue, 19th Street, Tehran.
Abstract:
Regarding to the large surface-to-volume ratio, the overall behavior of a nanostructured semiconductor is a complicated superposition of the bulk and surface effects. Practically, it is difficult task to distinguish between the bulk and the surface effects. Though, the surface contribution in the overall response of a nanostructure may be distinguished from the bulk effects via the measurements done in AC domain. In this talk, I will present our recent experimental findings about the conduction mechanism of zinc oxide nanowires. The response of nanowires to the optical & thermal excitations is critically related to the driving AC frequency. The nanowires exhibit a continuous transition from positive to negative photoconductivity as a function of the driving frequency. In a similar manner, ZnO nanowires display a frequency-driven metal-insulator transition at the room temperature. Our experiments suggest that the both transitions are indeed indications of a transition of conductivity from the bulk conduction to the surface conduction.
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UT.Physics.Seminars
Announcements of Weekly Seminars, Department of Physics, University of Tehran.
Forwarded from BWS 2023
«سمینارهای زمستانه بیوتکنولوژی»
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📅 چهارشنبه و پنجشنبه ۵-۶ دی
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با حضور محققان برجسته ایرانی مقیم خارج از کشور
📅 چهارشنبه و پنجشنبه ۵-۶ دی
⏰ ساعت ۸:۳۰ تا ۱۶
🏛 تالار شهید دهشور، پردیس علوم دانشگاه تهران
🔴 ظرفیت محدود
ثبتنام:
evand.com/events/BWS2018
@BWS_UT