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X-WR-CALNAME:UNAM Nanoteknoloji Araştırma Merkezi
X-ORIGINAL-URL:https://unam.bilkent.edu.tr/en
X-WR-CALDESC:Events for UNAM Nanoteknoloji Araştırma Merkezi
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TZID:Europe/Moscow
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DTSTART:20240101T000000
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BEGIN:VEVENT
DTSTART;TZID=Europe/Moscow:20240508T110000
DTEND;TZID=Europe/Moscow:20240508T123000
DTSTAMP:20260906T151611
CREATED:20240430T133416Z
LAST-MODIFIED:20240430T133437Z
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SUMMARY:Coherent perfect absorption and transmission of light
DESCRIPTION:Stefan Rotter\nTU Wien – Vienna University of Technology \n\nCoherent perfect absorption and transmission of light \nIn my talk I will present two recent works focused on the perfect absorption and transmission of waves through interferometric cancellation of backscattering. In the first case [1]\, we demonstrate that even a weakly absorbing film can be turned into a “coherent perfect absorber” by building a degenerate cavity around it. This special cavity perfectly couples incoming light fields with arbitrary wavefronts into the absorber – even for the case that light is a dynamically varying speckle pattern. In the second case [2]\, we demonstrate how to construct an anti-reflection structure for a complex scattering system like a disordered medium. Similar to an anti-reflection coating for conventional eye-glasses\, this structure leads to perfect transmission across the scattering system by suppressing back-scattering for any incoming wavefront. If time permits\, I will also say a few words about the topological origin of the above effects and how this aspect can be used to engineer thermal radiation [3]. \n[1] Y. Slobodkin\, G. Weinberg\, H. Hörner\, K. Pichler\, S. Rotter\, and O. Katz\, Science 377\, 995 (2022)\n[2] M. Horodynski\, M. Kühmayer\, C. Ferise\, S. Rotter\, and M. Davy\, Nature 607\, 281 (2022)\n[3] M. S. Ergoktas\, A. Kecebas\, K. Despotelis\, S. Soleymani\, G. Bakan\, A. Kocabas\, A. Principi\, S. Rotter\, S. K. Özdemir\, and C. Kocabas\, arXiv:2401.08316 \n  \n \n  \nAbout speaker\nStefan Rotter is professor at TU Wien’s Institute for Theoretical Physics. After studies in Vienna and Lausanne\, he obtained his Ph.D. in 2004\, followed by a postdoctoral position at Yale University. His group was established in 2011 and focuses on non-Hermitian physics\, theoretical quantum optics and on the propagation of classical or quantum waves through complex media. In all of these fields the Rotter group aims at identifying interesting new research directions and at exploring them in close collaboration with the experiment. \n \n  \n  \n\n  \n 
URL:https://unam.bilkent.edu.tr/en/event/coherent-perfect-absorption-and-transmission-of-light/
CATEGORIES:Nanocolloquium Series
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BEGIN:VEVENT
DTSTART;TZID=Europe/Moscow:20240515T083000
DTEND;TZID=Europe/Moscow:20240515T183000
DTSTAMP:20260906T151611
CREATED:20240527T103635Z
LAST-MODIFIED:20250508T122727Z
UID:8806-1715761800-1715797800@unam.bilkent.edu.tr
SUMMARY:NanoDay 2024
DESCRIPTION:Bilkent University UNAM has proudly hosted an annual NanoDay event where prominent figures from the global scientific community converge. Researchers\, students\, and industry representatives from Turkey and beyond come together for this extraordinary occasion. We are thrilled to announce that this year’s NanoDay will take place on Wednesday\, May 15\, 2024. \nSince 2014\, UNAM has been organizing NanoDay\, hosting prominent international figures in the field of science. This year\, once again\, UNAM is preparing to welcome leading names in science. \nAs part of NanoDay 2024\, we will have the honor of hosting Prof. Monika Ritsch-Marte from the Innsbruck Medical University in Austria\, who is renowned for her expertise in biomedical imaging. We will also welcome Prof. Pepijn Pinkse from the University of Twente in the Netherlands to share his recent research on quantum optics in complex systems. Additionally\, Prof. Sergey Gaponenko from the Belarusian Academy of Sciences for his significant contributions to the fields of nanophotonics and semiconductor nanocrystals. \nSince its inception\, UNAM has brought together more than 3\,000 individuals through NanoDay in pursuit of scientific inquiry. This remarkable event not only fosters a vibrant atmosphere of discovery but also empowers students from Bilkent University and other esteemed institutions to showcase their talents. Through engaging activities like the NanoArt competition and the NanoPoster competition and exhibition\, young innovators find a platform to express their creativity and passions\, transforming the event into a celebration of knowledge and expression. \nJoin us and be a part of this exhilarating event! \nNanoDay Web Site
URL:https://unam.bilkent.edu.tr/en/event/nanoday-2024/
CATEGORIES:UNAM Nanoday
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BEGIN:VEVENT
DTSTART;TZID=Europe/Moscow:20240516T080000
DTEND;TZID=Europe/Moscow:20240516T170000
DTSTAMP:20260906T151611
CREATED:20240527T103013Z
LAST-MODIFIED:20240527T103823Z
UID:8803-1715846400-1715878800@unam.bilkent.edu.tr
SUMMARY:Basic sciences: The mission of homo sapiens in the universe
DESCRIPTION:Sergey V. Gaponenko\nNational Academy of Sciences of Belarus \n\nBasic sciences: The mission of homo sapiens in the universe \nIn spite of high recognition of basic sciences by academic community there is still a need to identify the decisive role of basic sciences in many facets of human life including not only its role in education but also as the root of high technologies\, as the cheapest stage of innovations\, as the efficient way of people diplomacy. The arguments in favor of these statements are given in the present paper.\nBasic sciences do form the basis for innovations and can be viewed as the first\, preliminary stage of the general innovation chain. However\, the major societal and economical impact of significant discoveries and breakthrough theories cannot be foreseen or predicted in advance. In general the statement is valid that high technologies are born by high science. \nBasic sciences represent the most cheap\, low-cost stage of innovations. Though certain megaprojects can be thought by common customers and tax payers as money wasteful activity for the sake of education development and scientists’ curiosity only\, a brief analysis of spending for research and development shows that basic sciences need much less money than applied research and developments. For example\, the cost of joint efforts of EU countries in Large Hadron Collider megaproject is approximately equivalent to annual R&D spending of Intel corporation. \nBasic sciences unite intellectual community and represent a bright manifestation of science diplomacy bridging people of different races\, religions and cultures. This becomes possible and is promoted owing to fruitfulness of international efforts in basic research and because of non-commercial\, non-classified character of results in basic sciences.\nMoreover\, we suggest to consider the continuous development of scientific worldview (which only basic sciences enable) to be treated as the mission of homo sapiens in the universe. We ought to conceive the structure of the universe from the sub-atomic level to astronomical scale. This responsibility can be viewed as a part of cosmoethics\, i. e.\, internal intrinsic responsibility of humans for their presence in the universe. \n  \nAbout speaker\nSergey Gaponenko is Director of the B. I. Stepanov Institute of Physics of The National Academy of Sciences of Belarus. He is an expert in nanophotonics and plasmonics with about 200 published papers and 3 books published by Camridge University\, the recent one in 2019 being a joint work with Prof. H. M. Demir. In his early studies he made a contribution to photophysics of colloidal semiconductor nanocrystals (quantum dots) whereas nowadays he focuses at plasmonically enhanced luminescence and Raman spectroscopies as well as systematic studies of photon density of states effects in complex media from nanoscience to astrophysics. \n  \n \n  \n\n  \n 
URL:https://unam.bilkent.edu.tr/en/event/basic-sciences-the-mission-of-homo-sapiens-in-the-universe/
CATEGORIES:UNAM Thursday Seminars
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BEGIN:VEVENT
DTSTART;TZID=Europe/Moscow:20240524T150000
DTEND;TZID=Europe/Moscow:20240524T163000
DTSTAMP:20260906T151611
CREATED:20240521T071830Z
LAST-MODIFIED:20240521T071830Z
UID:8776-1716562800-1716568200@unam.bilkent.edu.tr
SUMMARY:Repurposing Biomaterials and Its Applications
DESCRIPTION:Hojae Bae\nKonkuk University\, Seoul\, Korea \n\nRepurposing Biomaterials and Its Applications \nIn recent years\, numerous studies have been conducted on cultured meat; however\, the production of large-sized cultured meat continues to present a challenge. In this regard\, 3D bioprinting emerges as a promising approach for generating large cell aggregates to facilitate cultured meat production. Utilizing digital light processing-based (DLP) printing\, a hydrogel scaffold is created at the centimeter scale\, offering high printing accuracy and the ability to construct complex geometric structures. Successful fabrication of scaffolds incorporating living cells and large microchannels has been achieved. Notably\, the cooked cultured meat retains its original size and shape even after being cut\, with overall dimensions measuring 3.43 cm x 5.53 cm x 0.96 cm. This study demonstrates the proof-of-concept for utilizing bioinks in the production of 3D cultured meat. Nevertheless\, due to substantial disparities between the objectives of muscle tissue engineering for biomedical purposes and food applications\, conventional strategies may prove unfeasible or socially unacceptable. Consequently\, the pursuit of non-animal materials to foster muscle cell proliferation and alignment\, without resorting to potentially toxic chemical modifications\, represents an ongoing challenge. To address this\, recent studies focusing on culturing and aligning muscle cells solely through plant-based materials will be presented as a potential solution for cultured meat production. \n  \n \nFigure 1. Schematic illustration showcasing the (A) efficient transdifferentiation of bovine fibroblasts into myogenic and adipogenic lineages within a 3D bioprinting system\, facilitating the production of steak-like cultured meat. Additionally\, we explore the (B) development of a cultured meat production system for large-scale manufacturing employing the wet-spinning technique. \n\nJeong\, J. W. Seo\, H. Lee\, W. K. Jung\, Y. H. Park\, and H. Bae\, Advanced Science\, 2022\, 9(31)\, 2202877\nJeong\, G. Jang\, W. K. Jung\, Y. H. Park\, and Hojae Bae*\, Stretchable zein-coated alginate fiber for aligning muscle cells to artificially produce cultivated meat\, npj science of food\, 8(13) doi.org/10.1038/s41538-024-00257-y .\n\n  \n  \n  \nAbout Speaker\nProf. Bae is a Professor at Konkuk University in Seoul\, Korea\, specializing in engineered biomaterial technologies for translational applications. \n  \nHe holds a Bachelor’s degree in Genetic Engineering and a Master’s degree in Bioengineering from Korea University\, as well as a Ph.D. in Food Technology from Clemson University. His doctoral dissertation on Gelatin-nanoclay composite material has been published in several major scientific journals holds an International Patent (World Intellectual Property Organization). He has presented results from his studies related to Ph.D. training at major national conferences. \nWith expertise in natural polymers\, Prof. Bae focuses on developing controlled micro- and nano-architectures for engineered tissue\, aiming to guide tissue morphogenesis and cell behavior in tissue engineering applications. He has also pioneered various high-performance biomaterials for medical applications\, currently undergoing translational studies. Prof. Bae’s extensive knowledge of biopolymer-based hydrogels has led him to explore interdisciplinary applications and modifications of these materials. He is committed to translating his research findings into commercially viable products. For instance\, his recent work on centimeter-scale 3D printed hydrogel constructs for tissue engineering has demonstrated the potential for producing steak-type cultured meat. \nProf. Bae has edited multiple books/journal special issues and is an author of over 100 peer-reviewed journal articles\, editorials\, and review papers\, as well as more than 20 book chapters/edited books and >10 patent/disclosure applications. His work has been published in leading journals and routinely highlighted in international media. He has been cited approximately 16\,000 times and has an H-index of 60. \n \n  \n  \n\n  \n 
URL:https://unam.bilkent.edu.tr/en/event/repurposing-biomaterials-and-its-applications/
CATEGORIES:UNAM Seminars
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