Fundamental Investigation of Hierarchical Surface Restructuring of Electrodes and Microelectrode Arrays for Neurostimulation Applications

2021 ◽  
Author(s):  
Natalie Page ◽  
Keyword(s):  
Microelectrode Arrays ◽  
Surface Restructuring ◽  
Fundamental Investigation

Fundamental Investigation of a Gas Circuit Breaker in University

2010 ◽  
Vol 130 (12) ◽  
pp. 1047-1052
Author(s):  
Hiroaki Toda ◽  
Masayuki Hikita ◽  
Hisatoshi Ikeda
Keyword(s):  
Circuit Breaker ◽  
Fundamental Investigation

Fundamental Investigation of a Grating Consisting of InSb-Coated Dielectric Cylinders on a Substrate in the THz Regime

2020 ◽  
Vol E103.C (11) ◽  
pp. 567-574 ◽  
Author(s):  
Jun SHIBAYAMA ◽  
Sumire TAKAHASHI ◽  
Junji YAMAUCHI ◽  
Hisamatsu NAKANO
Keyword(s):  
Fundamental Investigation

Evolution of Metastable Structures in Bimetallic Catalysts from Microscopy and Machine-Learning Molecular Dynamics

2020 ◽  
Author(s):  
Jin Soo Lim ◽  
Jonathan Vandermause ◽  
Matthijs A. van Spronsen ◽  
Albert Musaelian ◽  
Christopher R. O’Connor ◽  
...  
Keyword(s):  
Machine Learning ◽  
Molecular Dynamics ◽  
Large Scale ◽  
Materials Science ◽  
Complete Characterization ◽  
Layer By Layer ◽  
Surface Restructuring ◽  
Metastable Structures ◽  
Mechanistic Investigation ◽  
Underlying Mechanisms

Restructuring of interface plays a crucial role in materials science and heterogeneous catalysis. Bimetallic systems, in particular, often adopt very different composition and morphology at surfaces compared to the bulk. For the first time, we reveal a detailed atomistic picture of the long-timescale restructuring of Pd deposited on Ag, using microscopy, spectroscopy, and novel simulation methods. Encapsulation of Pd by Ag always precedes layer-by-layer dissolution of Pd, resulting in significant Ag migration out of the surface and extensive vacancy pits. These metastable structures are of vital catalytic importance, as Ag-encapsulated Pd remains much more accessible to reactants than bulk-dissolved Pd. The underlying mechanisms are uncovered by performing fast and large-scale machine-learning molecular dynamics, followed by our newly developed method for complete characterization of atomic surface restructuring events. Our approach is broadly applicable to other multimetallic systems of interest and enables the previously impractical mechanistic investigation of restructuring dynamics.

What Structural Features Make Porous Carbons Work for Redox-Enhanced Electrochemical Capacitors? A Fundamental Investigation

2021 ◽  
Vol 6 (3) ◽  
pp. 854-861
Author(s):  
Yang Zhao ◽  
Erin E. Taylor ◽  
Xudong Hu ◽  
Brian Evanko ◽  
Xiaojun Zeng ◽  
...  
Keyword(s):  
Electrochemical Capacitors ◽  
Structural Features ◽  
Porous Carbons ◽  
Fundamental Investigation

scholarly journals Extracellular detection of neuronal coupling

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Elmer Guzman ◽  
Zhuowei Cheng ◽  
Paul K. Hansma ◽  
Kenneth R. Tovar ◽  
Linda R. Petzold ◽  
...  
Keyword(s):  
Action Potentials ◽  
Microelectrode Arrays ◽  
Short Latency ◽  
Spike Sorting ◽  
Neuronal Connectivity ◽  
Direct Stimulation ◽  
Multiple Electrodes

AbstractWe developed a method to non-invasively detect synaptic relationships among neurons from in vitro networks. Our method uses microelectrode arrays on which neurons are cultured and from which propagation of extracellular action potentials (eAPs) in single axons are recorded at multiple electrodes. Detecting eAP propagation bypasses ambiguity introduced by spike sorting. Our methods identify short latency spiking relationships between neurons with properties expected of synaptically coupled neurons, namely they were recapitulated by direct stimulation and were sensitive to changing the number of active synaptic sites. Our methods enabled us to assemble a functional subset of neuronal connectivity in our cultures.

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