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  • Author(s):
    Christopher Smyth, Lee Walsh, Pavel Bolshakov, Massimo Catalano, Michael Schmidt, Brendan Sheehan, Rafik Addou, Luhua Wang, Jiyoung Kim, Moon Kim, Christopher Hinkle, Robert Wallace
    Abstract:

    Sc has been employed as an electron contact to a number of two-dimensional (2D) materials (e.g. MoS2, black phosphorous) and has enabled, at times, the lowest electron contact resistance. However, the extremely reactive nature of Sc leads to stringent processing requirements and metastable device performance with no true understanding of how to achieve consistent, high-performance Sc contacts. In this work, WSe2 transistors with impressive subthreshold slope (109 mV dec−1) and I ON/I OFF (106…

    Date Published:
    2019-07
  • Author(s):
    Christopher Smyth, Lee Walsh, Pavel Bolshakov, Massimo Catalano, Michael Schmidt, Brendan Sheehan, Rafik Addou, Luhua Wang, Jiyoung Kim, Moon Kim, Christopher Hinkle, Robert Wallace
    Abstract:

    Sc has been employed as an electron contact to a number of two-dimensional (2D) materials (e.g. MoS2, black phosphorous) and has enabled, at times, the lowest electron contact resistance. However, the extremely reactive nature of Sc leads to stringent processing requirements and metastable device performance with no true understanding of how to achieve consistent, high-performance Sc contacts. In this work, WSe2 transistors with impressive subthreshold slope (109 mV dec−1) and I ON/I OFF (106…

    Date Published:
    2019-07
  • Author(s):
    Shanmugam Panneer Selvam, Ryan De Palma, Kristen Johnson, Rasesh Parikh, Vamsi Gangaraju, Yuri Peterson, Mohammed Dany, Robert V. Stahelin, Christina Voelkel-Johnson, Zdzislaw Szuic, Erhard Bieberich, Besi Ogetmen
    Abstract:

    Formation of membrane pores/channels regulates various cellular processes, such as necroptosis or stem cell niche signaling. However, the roles of membrane lipids in the formation of pores and their biological functions are largely unknown. Here, using the cellular stress model evoked by the sphingolipid analog drug FTY720, we show that formation of ceramide-enriched membrane pores, referred to here as ceramidosomes, is initiated by a receptor-interacting Ser/Thr kinase 1 (RIPK1)-ceramide com…

    Date Published:
    2019-01
  • Author(s):
    Michael A. VendenBerg, Edgar Ruiz Bello, Calvin Nazareth, Matthew J. Webber
    Abstract:

    The self-assembly of oppositely charged oligopeptide mixtures is evaluated, observing self-sorting into distinct, yet still interacting, nanostructures.Significant efforts in the field of supramolecular materials have strived to co-assemble small molecules in order to realize individual nanostructures with multiple, tunable activities. The design of self-assembling motifs bearing opposite charges is one commonly used method, with favorable electrostatic interactions used to promote mixing in …

    Date Published:
    2019-08
  • Author(s):
    R. Marks, K. Doudrick
    Abstract:

    Chlorite (ClO 2 - ) is a disinfection byproduct formed during drinking water treatment when source waters with a high oxidant demand are disinfected with chlorine dioxide. This study investigated the reduction of… Chlorite (ClO 2 - ) is a disinfection byproduct formed during drinking water treatment when source waters with a high oxidant demand are disinfected with chlorine dioxide. This study investigated the reduction of ClO 2 - using a visible light (Vis) active photocatalyst, bismuth va…

    Date Published:
    2019-08
  • Author(s):
    Jae Hyun Park, Eamonn Kennedy, Mohammad Hokmabadi, Lisa Almonte-Garcia, Li Ding, Narayana Aluru, Gregory Timp
    Abstract:

    The size of an ion affects everything from the structure of water to life itself. In this report, to gauge their size, ions dissolved in water are forced electrically through a sub-nanometer- diameter pore spanning a thin membrane and the current is measured. The measurements reveal an ion-selective conductance that vanishes in pores <0.24 nm in diameter—the size of a water molecule—indicating that permeating ions have a grossly distorted hydration shell. Analysis of the current noise powe…

    Date Published:
    2019-05
  • Author(s):
    Seog Joon Yoon, Rizwan Khan, Junkhyun Lee, Jin Ho Bang
    Abstract:

    ABSTRACT: Despite the successful launch of Au nanoclusters (NCs) in light energy conversion applications, the utilization of Ag NCs has been limited by their instability under continuous illumination. The main cause of photoinduced degradation pathways remains elusive. Hence, understanding the underlying mechanism behind the low stability is an urgent task to provide a new impetus for the development of Ag NCs. The slow regeneration of Ag NCs by a redox couple leads to holes in the NCs, which…

    Date Published:
    2019-05
  • Author(s):
    Gregory Timp, Eamonn Kennedy, Zhuxin Dong, Clare Tennant
    Abstract:

    Disclosed are then inorganic membranes having a defined topography that includes pores having a defined diameter of nanometer and sub-nanometer diameter. The thin membranes are resistant to protein denaturing agents, and may be employed in analytical and clinical methods for identifying single amino acid residues within the sequence of a protein and the pores are other than NspA pores. Methods for making a thin inorganic membrane with nanopore and sub-nanopore topography and conical cone stru…

    Date Created:
    2019-09-26
    Resource Type
    Document
  • Author(s):
    Zhe Cheng, Yee Rui Koh, Habib Ahmad, Rejiu Hu, Jingjing Shi, Michael Liao, Yekan Wang, Tingyu Bai, Ruiyang Li, Eungkyu Lee, Evan Clinton, Christopher Matthews, Zachary Engel, Luke Yates, Tengfei Luo, Mark Goorsky, William Doolittle, Zhiting Tian, Patrick Hopkins, Samuel Graham
    Abstract:

    A unified fundamental understanding of interfacial thermal transport is missing due to the complicated nature of interfaces which involves complex factors such as interfacial bonding and mixing, surface chemistry, crystal orientation, roughness, and interfacial disorder. This is especially true for metal-nonmetal interfaces which incorporate multiple fundamental heat transport mechanisms such as elastic and inelastic phonon scattering as well as electron-phonon coupling in the metal and acros…

    Date Published:
    2019-09
  • Author(s):
    Zhe Cheng, Yee Rui Koh, Habib Ahmad, Rejiu Hu, Jingjing Shi, Michael Liao, Yekan Wang, Tingyu Bai, Ruiyang Li, Eungkyu Lee, Evan Clinton, Christopher Matthews, Zachary Engel, Luke Yates, Tengfei Luo, Mark Goorsky, William Doolittle, Zhiting Tian, Patrick Hopkins, Samuel Graham
    Abstract:

    A unified fundamental understanding of interfacial thermal transport is missing due to the complicated nature of interfaces which involves complex factors such as interfacial bonding and mixing, surface chemistry, crystal orientation, roughness, and interfacial disorder. This is especially true for metal-nonmetal interfaces which incorporate multiple fundamental heat transport mechanisms such as elastic and inelastic phonon scattering as well as electron-phonon coupling in the metal and acros…

    Date Published:
    2019-09
  • Author(s):
    Khachatur Manukyan
    Abstract:

    Cerium oxide (CeO2) is of great interest due to its unique properties. The formation of a single oxygen-vacancy during the reduction of CeO2 to Ce2O3 increases the Ce3+ fraction [1,2,3]. The valence and defect structures of CeO2 are dynamic and can change spontaneously or in response to physical parameters such as temperature, partial oxygen pressure, doping with other ions, and on applying an electric field or surface stress. Nano-scale CeO2 particles possess an increased Ce3+ concentration …

    Date Published:
    2019-08
  • Author(s):
    Min Wang, Zulei Zhang, Lei Li, X. Cao
    Abstract:

    The nanocomposite preparation procedure plays an important role in achieving a well-established heterostructured junction, and hence, an optimized photocatalytic activity. In this study, a series of g-C3N4/ZnO nanocomposites were prepared through two distinct procedures of a low-cost, environmentally-friendly, in-situ fabrication process, with urea and zinc acetate being the only precursor materials. The physicochemical properties of synthesized g-C3N4/ZnO composites were mainly characterized…

    Date Published:
    2019-02