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  • Condensed Matter: Electronic Properties, etc.  (1)
  • nanotechnology, organic chemistry, biomaterials  (1)
  • 2015-2019  (2)
  • 1
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    Charge-Spin Correlation in van der Waals Antiferromagnet ${\mathrm{NiPS}}_{3}$ (2018)
    American Physical Society (APS)
    Details
    Publication Date: 2018-03-28
    Description: Author(s): So Yeun Kim, Tae Yun Kim, Luke J. Sandilands, Soobin Sinn, Min-Cheol Lee, Jaeseok Son, Sungmin Lee, Ki-Young Choi, Wondong Kim, Byeong-Gyu Park, C. Jeon, Hyeong-Do Kim, Cheol-Hwan Park, Je-Geun Park, S. J. Moon, and T. W. Noh Strong charge-spin coupling is found in a layered transition-metal trichalcogenide NiPS 3 , a van der Waals antiferromagnet, from studies of the electronic structure using several experimental and theoretical tools: spectroscopic ellipsometry, x-ray absorption, photoemission spectroscopy, and density ... [Phys. Rev. Lett. 120, 136402] Published Tue Mar 27, 2018
    Keywords: Condensed Matter: Electronic Properties, etc.
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 2
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    Topological, chemical and electro-optical characteristics of riboflavin-doped artificial and natural DNA thin films (2018)
    Royal Society
    Details
    Publication Date: 2018-02-15
    Description: DNA is considered as a useful building bio-material, and it serves as an efficient template to align functionalized nanomaterials. Riboflavin (RF)-doped synthetic double-crossover DNA (DX-DNA) lattices and natural salmon DNA (SDNA) thin films were constructed using substrate-assisted growth and drop-casting methods, respectively, and their topological, chemical and electro-optical characteristics were evaluated. The critical doping concentrations of RF ([RF] C , approx. 5 mM) at given concentrations of DX-DNA and SDNA were obtained by observing the phase transition (from crystalline to amorphous structures) of DX-DNA and precipitation of SDNA in solution above [RF] C . [RF] C are verified by analysing the atomic force microscopy images for DX-DNA and current, absorbance and photoluminescence (PL) for SDNA. We study the physical characteristics of RF-embedded SDNA thin films, using the Fourier transform infrared spectrum to understand the interaction between the RF and DNA molecules, current to evaluate the conductance, absorption to understand the RF binding to the DNA and PL to analyse the energy transfer between the RF and DNA. The current and UV absorption band of SDNA thin films decrease up to [RF] C followed by an increase above [RF] C . By contrast, the PL intensity illustrates the reverse trend, as compared to the current and UV absorption behaviour as a function of the varying [RF]. Owing to the intense PL characteristic of RF, the DNA lattices and thin films with RF might offer immense potential to develop efficient bio-sensors and useful bio-photonic devices.
    Keywords: nanotechnology, organic chemistry, biomaterials
    Electronic ISSN: 2054-5703
    Topics: Natural Sciences in General
    Published by Royal Society
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