Polarity effect of breakdown characteristics across micrometer‐scale surface gap

2020 ◽  
Author(s):  
Hiroyuki Iwabuchi ◽  
Tsutomu Oyama ◽  
Akiko Kumada ◽  
Kunihiko Hidaka
Keyword(s):  
Polarity Effect ◽  
Micrometer Scale ◽  
Scale Surface

Polarity Effect of Breakdown Characteristics across Micrometer-scale Surface Gap

2020 ◽  
Vol 140 (7) ◽  
pp. 342-348
Author(s):  
Hiroyuki Iwabuchi ◽  
Tsutomu Oyama ◽  
Akiko Kumada ◽  
Kunihiko Hidaka
Keyword(s):  
Polarity Effect ◽  
Micrometer Scale ◽  
Scale Surface

scholarly journals Effects of micrometer-scale surface roughness on thermal infrared emittance spectra of silica glass

Icarus ◽  
2020 ◽  
Vol 350 ◽  
pp. 113868 ◽  
Author(s):  
Jeff A. Berger ◽  
Sherry L. Cady ◽  
Victoria E. Hamilton
Keyword(s):  
Surface Roughness ◽  
Silica Glass ◽  
Thermal Infrared ◽  
Micrometer Scale ◽  
Scale Surface

Nanometer-scale features on micrometer-scale surface texturing: A bone histological, gene expression, and nanomechanical study

Bone ◽  
2014 ◽  
Vol 65 ◽  
pp. 25-32 ◽  
Author(s):  
Paulo G. Coelho ◽  
Tadahiro Takayama ◽  
Daniel Yoo ◽  
Ryo Jimbo ◽  
Sanjay Karunagaran ◽  
...  
Keyword(s):  
Gene Expression ◽  
Surface Texturing ◽  
Nanometer Scale ◽  
Micrometer Scale ◽  
Scale Surface

scholarly journals Breakdown phenomena across micrometer scale surface gap under negative voltage application

2019 ◽  
Vol 26 (5) ◽  
pp. 1377-1384 ◽  
Author(s):  
Hiroyuki Iwabuchi ◽  
Tsutomu Oyama ◽  
Akiko Kumada ◽  
Kunihiko Hidaka
Keyword(s):  
Negative Voltage ◽  
Voltage Application ◽  
Micrometer Scale ◽  
Scale Surface

Analysis of 3 Dimensional Micro Plastic Deformation Phenomenon Using Indentation Method

2012 ◽  
Vol 6 (6) ◽  
pp. 742-748
Author(s):  
Yoshitaka Uehara ◽  
◽  
Minoru Ota ◽  
Toshikazu Nanbu ◽  
Keyword(s):  
Plastic Deformation ◽  
Surface Texture ◽  
Fuel Efficiency ◽  
Viscous Resistance ◽  
Indentation Method ◽  
3 Dimensional ◽  
Sliding Surfaces ◽  
Indentation Experiment ◽  
Micrometer Scale ◽  
Scale Surface

Recently, there are demands for reduction of friction in the engine and transmission parts, in order to improve fuel efficiency. One way to reduce friction of sliding surfaces is by reduction of viscous resistance of oil film due to controlled micrometer scale surface texture. In this study, an indentation experiment using diamond tools was performed, and the basic plastic deformation phenomenon seen in 3D micro-nano forming are discussed in detail. It was found that the geometry of the tool tip has a large influence on the material’s deformation phenomenon near the tool’s edge plane.

Correlation between Surface Morphological Defects and Crystallographic Defects in SiC

2012 ◽  
Vol 717-720 ◽  
pp. 359-362 ◽  
Author(s):  
Tetsuo Hatakeyama ◽  
Kyoichi Ichinoseki ◽  
Hiroshi Yamaguchi ◽  
N. Sugiyama ◽  
Hirofumi Matsuhata
Keyword(s):  
Epitaxial Layers ◽  
Screw Dislocations ◽  
X Ray ◽  
Morphological Defects ◽  
History Of ◽  
Crystallographic Defects ◽  
Micrometer Scale ◽  
Edge Dislocations ◽  
Scale Surface

The origins of certain types of micrometer-scale surface morphological defects on SiC epitaxial layers are clarified using X-ray topography. Two types of surface morphological defects are commonly observed on Si- and C-face epitaxial layers. Relatively large pits (around 4μm×2μm) originate from threading screw dislocations (TSDs). Relatively small pits (around 1.5μm×1μm) originate from threading edge dislocations (TEDs). The shapes and depths of these surface morphological pits depend on the fabrication history of the epitaxial wafers.

Breakdown Characteristics across Micrometer-scale Surface Gap with Aluminum Electrodes

2014 ◽  
Vol 134 (8) ◽  
pp. 485-486 ◽  
Author(s):  
Hiroyuki Iwabuchi ◽  
Atsushi Watanabe ◽  
Shigeyasu Matsuoka ◽  
Akiko Kumada ◽  
Kunihiko Hidaka
Keyword(s):  
Aluminum Electrodes ◽  
Micrometer Scale ◽  
Scale Surface

Manipulation of Micrometer-Scale Adhesion by Tuning Nanometer-Scale Surface Features

Langmuir ◽  
2006 ◽  
Vol 22 (3) ◽  
pp. 1135-1142 ◽  
Author(s):  
Natalia Kozlova ◽  
Maria M. Santore
Keyword(s):  
Nanometer Scale ◽  
Scale Adhesion ◽  
Surface Features ◽  
Micrometer Scale ◽  
Scale Surface

scholarly journals Micro-topographical guidance of macropinocytic signaling patches

2020 ◽  
Author(s):  
Gen Honda ◽  
Nen Saito ◽  
Taihei Fujimori ◽  
Hidenori Hashimura ◽  
Mitsuru J. Nakamura ◽  
...  
Keyword(s):  
Immune Cells ◽  
Large Scale ◽  
Quantitative Imaging ◽  
Surface Features ◽  
Temporal Regulation ◽  
Large Particles ◽  
Membrane Protrusions ◽  
Spatio Temporal ◽  
Micrometer Scale ◽  
Scale Surface

AbstractIn fast moving cells such as amoeba and immune cells, spatio-temporal regulation of dendritic actin filaments shapes large-scale plasma membrane protrusions. Despite the importance in migration as well as in particle and liquid ingestion, how these processes are affected by the micrometer-scale surface features is poorly understood. Here, through quantitative imaging analysis of Dictyostelium on micro-fabricated surfaces, we show that there is a distinct mode of topographically guided cell migration ‘phagotaxis’ directed by the macropinocytic Ras/PI3K signaling patches. The topography guidance was PI3K-dependent and involved nucleation of a patch at the convex curved surface and confinement at the concave surface. Due to the topography-dependence, constitutive cup formation for liquid uptake in the axenic strain is also destined to trace large surface features. Given the fact that PI3K-dependency of phagocytosis are restricted to large particles in both Dictyostelium and immune cells, topography-dependency and the dual-use of membrane cups may be wide-spread.

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