Results 121 to 130 of about 942,136 (353)

Role of Crosslinking and Backbone Segmental Dynamics on Ion Transport in Hydrated Anion‐Conducting Polyelectrolytes

Advanced Functional Materials, EarlyView.
Thermally crosslinked poly(2‐vinylpyridine)‐based anion conducting polyelectrolytes have been synthesized. The segmental dynamics of these polyelectrolytes have been systematically modified by varying the degree of crosslinking. Both the experimental and simulation results indicate that segmental dynamics have a limited influence on ion transport in ...
Zhongyang Wang, Kai Wang, Christopher Eom, Yuxi Chen, Ge Sun, Mincheol Kim, Joan M. Montes de Oca, Dongyue Liang, Kushal Bagchi, Shrayesh N. Patel, Juan J. de Pablo, Paul F. Nealey   +11 more
wiley   +1 more source

Switching between transparent and translucent states of a two-dimensional liquid crystal phase grating device with crossed interdigitated electrodes.

Optics Express, 2017
We report an electrically-switchable two-dimensional liquid crystal (LC) phase grating device for window display applications. The device consists of the top and bottom substrates with crossed interdigitated electrodes and vertically-aligned LCs ...
Tae-Hoon Choi, J. Huh, J. Woo, Jin-Hun Kim, Young-Seo Jo, T. Yoon   +5 more
semanticscholar   +1 more source

Ion and Solvent Dynamics in Charged 2D Clay Nanoslits with Unprecedented Ångström‐Precise Slit Height Control

Advanced Functional Materials, EarlyView.
The slit height of fluorohectorite 2D‐nanochannels is tuned with Å‐precision (2.4–250 Å). Slit‐height‐dependent ion and water mobilities are quantified by applying EIS, PFG‐NMR, and SFG‐NMR with MD simulations guiding interpretation. Diffuse properties are investigated with CP‐AFM, MD, and PB.
Max Stevenson, Sandra Pappler, Leonie Kanzler, Aqsa Nisar, Jepsinraj Kakkuzhiyulla Parambath, Markus Rosenstihl, Flora Lebeda, Sebastian Weiß, Georg Papastavrou, Michael Vogel, Jürgen Senker, Josef Breu   +11 more
wiley   +1 more source

Robust pH Sensing Using a Graphene Oxide and Covalent Organic Frameworks Composite for Gastro‐esophageal Reflux Disease Diagnosis

Advanced Healthcare Materials, EarlyView.
A stable composite pH sensor is developed by coating graphene oxide (GO) nanosheets with covalent organic frameworks (COFs) to improve stability and sensitivity in acidic environments. The GO/COFs sensor demonstrates high selectivity, linearity, and biocompatibility, offering a promising strategy for continuous pH monitoring in gastro‐esophageal reflux
Ahmed H. M. Salem, Jianhui Zhang, Ashley Lam, Haowei Wang, Umber Cheema, Laurence B. Lovat, Manish K. Tiwari   +6 more
wiley   +1 more source

Local Ferroelectricity in SrTiO_3 Thin Films

, 2002
The temperature-dependent polarization of SrTiO_3 thin films is investigated using confocal scanning optical microscopy. A homogeneous out-of-plane and inhomogeneous in-plane ferroelectric phase are identified from images of the linear electrooptic ...
E. Hegenbarth, H. Uwe, H. E. Weaver, H. E. Weaver, Hua Jiang, J. K. Hulm, Jeremy Levy, K. A. Muller, N. A. Pertsev, Oleg Tikhomirov, R. C. Neville, W. J. Burke   +11 more
core   +1 more source

Solvent‐Free Fabrication Methods of Metal Halide Perovskites

Advanced Materials, EarlyView.
This review explores the current status of solvent‐free fabrication methods of metal halide perovskites, such as thermal evaporation, magnetron sputtering, pulsed laser deposition, e‐beam and atomic layer deposition, solid phase growth, and laser printing.
Ran Ji, Arindam Mallick, Boris Rivkin, Hurriyet Yuce‐Cakir, Oana D. Jurchescu, Yana Vaynzof   +5 more
wiley   +1 more source

Impedimetric Characterization of Interdigitated Electrode Arrays for Biosensor Applications

Proceedings, 2018
We present recent results of the electrochemical impedance spectroscopy (EIS) measurements for interdigitated electrode arrays (IDAs) ranging from several micrometers down to hundreds of nanometers. Simulations have shown that the electric field strength
Elisabeth Kostal, Stephan Kasemann, Can Dincer, Stefan Partel   +3 more
doaj   +1 more source

Focusing Mirror with Tunable Eccentricity

, 2013
We present a new kind of varifocal mirror with independently adjustable curvatures in the major directions. For actuation we use two stacked piezo bending actuators with crossed in-plane polarization.
Brunne, Jens, Stürmer, Moritz, Wallrabe, Ulrike, Wapler, Matthias C.   +3 more
core   +1 more source

Nickel Hydroxide Catalyzed Bias‐free Photoelectrochemical NH3 Production via Nitrate Reduction

Advanced Materials, EarlyView.
A bias‐free photoelectrochemical nitrate reduction reaction with high efficiency and production rate is achieved using a crystalline silicon photocathode with nickel as the catalyst. Performing the PEC NO3RR under alkaline conditions can be self‐activated of the Ni surface by forming Ni(OH)2.
Wonjoo Jin, Hyunju Go, Juyeon Jeong, Jeonghwan Park, Ahmad Tayyebi, Je Min Yu, Seungchul Kim, Keunsu Choi, Ji‐Wook Jang, Kwanyong Seo   +9 more
wiley   +1 more source

Negative Differential Resistance in ZnO Nanowires Bridging Two Metallic Electrodes

Nanoscale Research Letters, 2010
The electrical transport through nanoscale contacts of ZnO nanowires bridging the interdigitated Au electrodes shows the negative differential resistance (NDR) effect. The NDR peaks strongly depend on the starting sweep voltage. The origin of NDR through
Lee Ching-Ting, Zhang Yang
doaj   +1 more source