scholarly journals DC Resistance Degradation of SrTiO 3 : The Role of Virtual‐Cathode Needles and Oxygen Bubbles

2021 ◽  
Author(s):  
Ana Alvarez ◽  
I‐Wei Chen
Keyword(s):  
Virtual Cathode ◽  
Resistance Degradation ◽  
Dc Resistance

scholarly journals Scaling of DD fusion power in a nanosecond vacuum discharge

2021 ◽  
pp. 16-24
Author(s):  
Yurii Kurilenkov ◽  
Vladimir Tarakanov ◽  
Aleksandr Oginov
Keyword(s):  
Virtual Cathode ◽  
Vacuum Discharge ◽  
Interelectrode Space ◽  
Fusion Power ◽  
Partial Penetration ◽  
Hollow Anode ◽  
Initial Stage ◽  
A Current

Earlier, in a nanosecond vacuum discharge (NVD) with a deuterated Pd anode, the appearance of DD neutrons was observed not only at the well-studied quasi-stationary stage, where a virtual cathode (VC) appears in the interelectrode space, but also at the very initial stage of the discharge. An analysis of the experiment shows that the autoelectron beam can play the role of a kind of trigger for starting DD syntheses processes on the surface or in the bulk of the Pd anode, but its mechanism at the initial stage of the discharge remained unclear. In this work, we performed PiC modeling of the possible partial penetration of a beam of autoelectrons into hollow anode Pd tubes. This leads to the formation of very small short-lived VCs inside individual Pd tubes, where, starting from a current of 100 A, DD microsynthesis is possible. It is shown that in devices with oscillating ions the favorable scaling of the DD fusion power, which increases with decreasing VC radius, can be retained up to rVC  0.02 cm.

scholarly journals Mechanical Pressure Characterization of CNT-Graphene Composite Material

Micromachines ◽  
2020 ◽  
Vol 11 (11) ◽  
pp. 1000 ◽  
Author(s):  
Asar Ali ◽  
Farman Ali ◽  
Muhammad Irfan ◽  
Fazal Muhammad ◽  
Adam Glowacz ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electronic Devices ◽  
Applied Pressure ◽  
Mechanical Pressure ◽  
Weight Percentage ◽  
Graphene Composite ◽  
Sensing Technology ◽  
Dc Resistance

Carbon nanotubes (CNTs) and graphene are extensively studied materials in the field of sensing technology and other electronic devices due to their better functional and structural properties. Additionally, more attention is given to utilize these materials as a filler to reinforce the properties of other materials. However, the role of weight percentage of CNTs in the piezoresistive properties of these materials has not been reported yet. In this work, CNT-graphene composite-based piezoresistive pressure samples in the form of pellets with different weight percentages of CNTs were fabricated and characterized. All the samples exhibit a decrease in the direct current (DC) resistance with the increase in external uniaxial applied pressure from 0 to 74.8 kNm−2. However, under the same external uniaxial applied pressure, the DC resistance exhibit more decrease as the weight percentage of the CNTs increase in the composites.

scholarly journals Polarity dependent DC resistance degradation and electrical breakdown in Nb doped PZT films

APL Materials ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 120901 ◽  
Author(s):  
Betul Akkopru-Akgun ◽  
Wanlin Zhu ◽  
Clive A. Randall ◽  
Michael T. Lanagan ◽  
Susan Trolier-McKinstry
Keyword(s):  
Electrical Breakdown ◽  
Pzt Films ◽  
Resistance Degradation ◽  
Dc Resistance

Leakage current characteristics and DC resistance degradation mechanisms in Nb doped PZT films

2021 ◽  
Vol 129 (17) ◽  
pp. 174102
Author(s):  
Betul Akkopru-Akgun ◽  
Thorsten J. M. ◽  
Kosuke Tsuji ◽  
Ke Wang ◽  
Clive A. Randall ◽  
...  
Keyword(s):  
Leakage Current ◽  
Degradation Mechanisms ◽  
Pzt Films ◽  
Resistance Degradation ◽  
Current Characteristics ◽  
Dc Resistance

Time dependent dc resistance degradation in lead-based perovskites: 0.7 Pb(Mg1/3Nb2/3)O3−0.3 PbTiO3

2009 ◽  
Vol 105 (5) ◽  
pp. 053705 ◽  
Author(s):  
S. Zhao ◽  
S. J. Zhang ◽  
W. Liu ◽  
N. J. Donnelly ◽  
Z. Xu ◽  
...  
Keyword(s):  
Time Dependent ◽  
Resistance Degradation ◽  
Dc Resistance

Step-graded AlGaN vs superlattice: Role of strain relief layer in dynamic on-resistance degradation

2021 ◽  
Author(s):  
Xiaoguang He ◽  
Yuxia Feng ◽  
Xuelin Yang ◽  
Shan Wu ◽  
Zidong Cai ◽  
...  
Keyword(s):  
Si Substrate ◽  
Power Devices ◽  
Energy Barriers ◽  
Strain Relief ◽  
Back Gate ◽  
Resistance Degradation ◽  
Different Types ◽  
Leakage Measurement ◽  
Vertical Leakage

Abstract In this work, we study the impacts of different types of strain relief layer (SRL) on dynamic on-resistance (Ron) degradation of GaN power devices on Si by back-gate ramping and vertical leakage measurement. Our study reveals that the SRL has important effects on the dynamic Ron. Compared with step-graded AlGaN SRL, the superlattice SRL possesses much more energy barriers, which can more effectively block the leakage of holes from GaN buffer and the injection of electrons from Si substrate. Enhancing the carrier blocking ability of SRL could contribute to the suppression of dynamic Ron degradation.

Role of PbO and Ag on Insulation Resistance Degradation in Relaxor-Based MLCs

1995 ◽  
Vol 78 (6) ◽  
pp. 1657-1660 ◽  
Author(s):  
Hideyuki Kanai ◽  
Osamu Furukawa ◽  
Shin-ichi Nakamura ◽  
Yohachi Yamashita
Keyword(s):  
Insulation Resistance ◽  
Resistance Degradation

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

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