Search CurateND

Search criteria:

Department or Unit: Integrated Imaging Facility remove × Department or Unit: Integrated Imaging Facility remove × Type of Work: Article remove ×
Clear all

List of files deposited in CurateND that match your search criteria

  • Author(s):
    Ilia Pavlovetc, Michael Brennan, Seriu Draguta, Anthony Ruth, Taylor Moot, Jeffrey A. Christians, Kyle Aleshire, Steve Harvey, Stefano Toso, Sanjini Nanyakkara, Jonah Messinger, Joseph Luther, Marsaru Kuno
    Abstract:

    on migration represents an intrinsic instability of metal halide perovskite solar cells. Here we show that triple-cation FAxMAyCs1-x-yPbI3 [FA+ = (NH2)2CH+, MA+ = CH3NH3+] active layers with mixed orthorhombic, post-perovskite (δortho-CsPbI3), and cubic perovskite (α) phases (i.e., α/δ-phase FAxMAyCs1-x-yPbI3) exhibit improved cation stability against applied bias relative to pure α-phase perovskites (i.e., FA0.85Cs0.15PbI3 and FA0.76MA0.15Cs0.09PbI3). Infrared photothermal heterodyne imaging…

    Date Published:
    2020-08
    Record Visibility:
    Public
  • Author(s):
    Stefano Toso, Ilia Pavlovetc, Maksym Zhukovskyi, Sergio Marras, Masaru Kuno, Liberato Mann, Dmitry Baranov
    Abstract:

    Perovskite nanocrystal superlattices (NC SLs) are the nearest real-world approximations to monodisperse NC ensembles. NC SLs thus represent ideal model systems for evaluating the optical and structural stability of CsPb(I1−xBrx)3 NCs at a macroscopic level. Here, photoinduced changes to CsPb(I1−xBrx)3 NC SLs (0 < x < 1.0) are probed via in situ photoluminescence, X-ray diffraction, and electron microscopy. We find that prolonged (∼10−20 h) ultraviolet−visible irradiation causes irrevers…

    Date Published:
    2020-11
    Record Visibility:
    Public
  • Author(s):
    Enrico Speri, Jeshina Janardhanan, Cesar Masitas, Valerie Schroeder, Elena Lastochkin, William Wolter, Jed Fisher, Shahriar Mobashery, Mayland Chang
    Abstract:

    A major challenge for chemotherapy of bacterial infections is perturbation of the intestinal microbiota. Clostridioides difficile is a Gram-positive bacterium of the gut that can thrive under this circumstance. Its production of dormant and antibiotic-impervious spores results in chronic disruption of normal gut flora and debilitating diarrhea and intestinal infection. C. difficile is responsible for 12,800 deaths per year in the United States. Here, we report the discovery of 2-(4-(3-(triflu…

    Date Published:
    2020-11
    Record Visibility:
    Public
  • Author(s):
    Prateek Mehta, Patrick Barboun, Yannick Engelmann, David Go, Annemie Bogaerts, William Schneider, Jason Hicks
    Abstract:

    We explore the consequences of nonthermal plasma-activation on product yields in catalytic ammonia synthesis, a reaction that is equilibrium-limited at elevated temperatures. We employ a minimal microkinetic model that incorporates the influence of plasma-activation on N2 dissociation rates to predict NH3 yields into and across the equilibrium-limited regime. NH3 yields are predicted to exceed bulk thermodynamic equilibrium limits on materials that are thermal-rate-limited by N2 dissociation….

    Date Published:
    2020-05
    Record Visibility:
    Public
  • Author(s):
    Sasha Padilla-Coley, Hui Xu
    Abstract:

    hydrophobic (i.e., Hoechst 33342) dyes or drugs, including a binary dye/drug pair (i.e., indocyanine green/mitoxantrone). The core of HBPn, containing a mixture of uncharged 2-pentanone chains and 1,2,3-triazole rings, could be loaded with uncharged and very hydrophobic dyes (i.e., Nile Red) or drugs. Improved aqueous solubility of camptothecin was achieved 10-fold from 8.4 to 75 ng/mL. Additionally, cell toxicity studies showed that HBPn was able to release the camptothecin drug inside A549 …

    Date Published:
    2020-04
    Record Visibility:
    Public
  • Author(s):
    Paul J. McGinn
    Abstract:

    High-throughput combinatorial investigations are transforming materials discovery, phase diagram development, and processing optimization. Thin-film deposition techniques are frequently used to fabricate sample libraries employed in these studies. Various adaptations of well-known thin-film chemical vapor deposition (CVD) and physical vapor deposition (PVD) techniques utilized for the synthesis of inorganic combinatorial thin-film materials libraries are reviewed, with novel processing approa…

    Date Published:
    2019-08
    Record Visibility:
    Public
  • Author(s):
    Patrick Barboun, Prateek Mehta, Francisco Herrera, David Go, William Schneider, Jason Hicks
    Abstract:

    Plasma-assisted catalysis is the process of electrically activating gases in the plasma-phase at low temperatures and ambient pressure to drive reactions on catalyst surfaces. Plasma-assisted catalytic processes combine conventional heterogeneous surface reactions, homogeneous plasma phase reactions, and coupling between plasma-generated species and the catalyst surface. Herein, we perform kinetically controlled ammonia synthesis measurements in a dielectric barrier discharge (DBD) plasma-ass…

    Date Published:
    2019-07
    Record Visibility:
    Public
  • Author(s):
    Luke Sadergaski, Meena Said, Amy Hixon
    Abstract:

    The unique and diverse features of uranyl peroxide nanoclusters may contribute to the enhanced mobility of uranium in the environment. This study examines the sorption of the uranyl peroxide nanocluster [UO2(O2)(OH)]6060‑ (U60) to Na-montmorillonite (SWy-2), plagioclase (anorthite), and quartz (SiO2) as a function of time, U60 concentration, and mineral concentration. SWy-2 was studied in both its untreated form as well as after two different pretreatments, denoted as partially treated SWy-2 a…

    Date Published:
    2019-09
    Record Visibility:
    Public
  • Author(s):
    James Zokoe, Changsheng Su, Paul J. McGinn
    Abstract:

    Potassium volatility and activity in a novel K-Ca-Si-O glass catalyst was investigated over extended periods of soot oxidation. Soot was continuously deposited and oxidized by maintaining a glass catalyst-coated filter at temperatures above the oxidation balance point to provide a soot mass equivalent to 100 000 miles of engine operation. Testing revealed the 52-SiO2, 35-K2O, and 13-CaO wt % glass catalysts show a significant improvement in soot oxidation performance over a Pt catalyst. The g…

    Date Published:
    2019-07
    Record Visibility:
    Public
  • Author(s):
    Hunter Ford, Laura Merrill, Jennifer Schaefer
    Abstract:

    Abstract: Rechargeable magnesium sulfur (Mg/S) batteries suffer from fast capacity fading due to difficulty of reoxidation of MgS and the polysulfide shuttle. Other works have reported that use of Cu current collectors or CuS at the cathode improves cycleability. Here we investigate Cu nanoparticles grown on carbon nanofibers (Cu@CNF) as an additive for the Mg/S battery cathode to test the effects of Cu metal on capacity and rate performance at controlled Cu loading. The Mg/S battery with Cu …

    Date Published:
    2019-10
    Record Visibility:
    Public
  • Author(s):
    Chinedu Madukoma, Shusuke Tomoshige, Choonkeun Kim, Elan Lastochkin, William C. Boggess, Jed Fisher, Joshua Shrout, Shahriar Mobashery
    Abstract:

    The interplay between the activities of lytic transglycosylases (LTs) and penicillin-binding proteins (PBPs) is critical for the health of the bacterial cell wall. Bulgecin A (a natural-product inhibitor of LTs) potentiates the activity of β-lactam antibiotics (inhibitors of PBPs), underscoring this intimate mechanistic interdependence. Bulgecin A in the presence of an appropriate β-lactam causes bulge deformation due to the formation of aberrant peptidoglycan at the division site of the bact…

    Date Published:
    2019-01
    Record Visibility:
    Public
  • Author(s):
    Seung-Ryong Kwon, Donghoon Han, Paul Bohn
    Abstract:

    Conspectus Electrochemical measurements conducted in confined volumes provide a powerful and direct means to address scientific questions at the nexus of nanoscience, biotechnology, and chemical analysis. How are electron transfer and ion transport coupled in confined volumes and how does understanding them require moving beyond macroscopic theories? Also, how do these coupled processes impact electrochemical detection and processing? We address these questions by studying a special type of c…

    Date Published:
    2019-10
    Record Visibility:
    Public