December 21, 2019 Journal article Open Access

Dzmitry V Yakimchuk; Egor Yu Kaniukov; Sergey Lepeshov; Victoria D Bundyukova; Sergey E Demyanov; Grigory M Arzumanyan; Nelya V Doroshkevich; Kahramon Z Mamatkulov; Arne Bochmann; Martin Presselt; Ondrej Stranik; Soslan A Khubezhov; Alex Krasnok; Andrea Alù; Vladimir A Sivakov

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    "description": "<p>Surface-enhanced Raman spectroscopy (SERS) is a promising optical method for analyzing molecular samples of various nature. Most SERS studies are of an applied nature indicating a serious potential for their application in analytical practice. Dendrite-like nanostructures have great potential for SERS, but the lack of a method for their predictable production significantly limits their implementation. In this paper, a method for controllable obtaining spatially separated, self-organized and highly-branched silver dendrites via template synthesis in pores of SiO2/Si is proposed. The dendritic branches have nanoscale roughness creating many plasmon-active &ldquo;hot spots&rdquo; required for SERS. The first held 3D modeling of the external electromagnetic wave interaction with such a dendrite, as well as experimental data, confirm this theory. Using the example of a reference biological analyte, which is usually used as a label for other biological molecules, the dendrites SERS-sensitivity up to 10&ndash;15 M was demonstrated with Enhancement factor of 108. The comparison of simulation results with SERS experiments allows distinguishing the presence of electromagnetic and chemical contributions, which have a different effect at various analyte concentrations.</p>", 
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    "publication_date": "2019-12-21", 
    "creators": [
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        "affiliation": "Cryogenic Research Division, Scientific-Practical Materials Research Centre, NAS of Belarus, Minsk 220072, Belarus", 
        "name": "Dzmitry V Yakimchuk"
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        "affiliation": "Institute of Chemistry of New Materials of National Academy of Sciences of Belarus, 36 St. Francyska Skaryny 220141 Minsk, Belarus & Department of Electronics Materials Technology, National University of Science and Technology MISiS, 4 Leninskiy Prospekt, 119049 Moscow, Russian Federation", 
        "name": "Egor Yu Kaniukov"
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        "affiliation": "Department of Physic, ITMO University, 49 Avenue Kronverksky 197101 St. Petersburg, Russian Federation", 
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        "affiliation": "Cryogenic Research Division, Scientific-Practical Materials Research Centre, NAS of Belarus, Minsk 220072, Belarus", 
        "name": "Victoria D Bundyukova"
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        "affiliation": "Cryogenic Research Division, Scientific-Practical Materials Research Centre, NAS of Belarus, Minsk 220072, Belarus", 
        "name": "Sergey E Demyanov"
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        "affiliation": "Joint Institute for Nuclear Research, 6 St. Joliot-Curie 141980 Dubna, Russian Federation & Dubna State University, 19 St. Universitetskaya 141982 Dubna, Russian Federation", 
        "name": "Grigory M Arzumanyan"
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        "affiliation": "Dubna State University, 19 St. Universitetskaya 141982 Dubna, Russian Federation", 
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        "affiliation": "Dubna State University, 19 St. Universitetskaya 141982 Dubna, Russian Federation", 
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        "name": "Martin Presselt"
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        "affiliation": "Leibniz Institute of Photonic Technology, 9 St. Albert-Einstein-Stra\u00dfe 07745 Jena, Germany", 
        "name": "Ondrej Stranik"
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        "affiliation": "Department of Physic, North-Ossetian State University, 46 St. Vatutina, 362025 Vladikavkaz, Russian Federation", 
        "name": "Soslan A  Khubezhov"
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        "affiliation": "Department of Physic, ITMO University, 49 Avenue Kronverksky 197101 St. Petersburg, Russian Federation & Photonics Initiative, Advanced Science Research Center, 85 St. Nicholas Terrace, 10031 New York, United States", 
        "name": "Alex Krasnok"
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        "affiliation": "Photonics Initiative, Advanced Science Research Center, 85 St. Nicholas Terrace, 10031 New York, United States & Physics Program, Graduate Center City University of New York, 85 St. Nicholas Terrace 10031 New York, United States & Department of Electrical Engineering, City College of New York, 85 St. Nicholas Terrace 10031 New York, United States", 
        "name": "Andrea Al\u00f9"
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