scholarly journals Characterization of a silicon-based shear-force sensor on human subjects

2002 ◽  
Vol 49 (11) ◽  
pp. 1340-1347 ◽  
Author(s):  
Lin Wang ◽  
D.J. Beebe
Keyword(s):  
Shear Force ◽  
Human Subjects ◽  
Force Sensor ◽  
Silicon Based

DEVELOPMENT AND CHARACTERIZATION OF A SILICON-BASED THREE AXIAL FORCE SENSOR

2005 ◽  
Author(s):  
F. VALVO ◽  
P. VALDASTRI ◽  
S. ROCCELLA ◽  
L. BECCAI ◽  
A. MENCIASSI ◽  
...  
Keyword(s):  
Axial Force ◽  
Force Sensor ◽  
Silicon Based

Characterization of a highly sensitive silicon based three-axial piezoresistive force sensor

2012 ◽  
Author(s):  
Nouha Al Cheikh ◽  
Caroline Coutier ◽  
Jean Brun ◽  
Christophe Poulain ◽  
Henri Blanc ◽  
...  
Keyword(s):  
Force Sensor ◽  
Highly Sensitive ◽  
Silicon Based

scholarly journals Correction to: Electrochemical Impedance Spectroscopy Characterization of Silicon-Based Electrodes for Li-Ion Batteries

2020 ◽  
Vol 11 (3) ◽  
pp. 364-364
Author(s):  
Maciej Ratynski ◽  
Bartosz Hamankiewicz ◽  
Michał Krajewski ◽  
Maciej Boczar ◽  
Dominika A. Buchberger ◽  
...  
Keyword(s):  
Electrochemical Impedance Spectroscopy ◽  
Impedance Spectroscopy ◽  
Electrochemical Impedance ◽  
Li Ion Batteries ◽  
Li Ion ◽  
Silicon Based

Silicon photonic devices for mid-infrared applications

Nanophotonics ◽  
2014 ◽  
Vol 3 (4-5) ◽  
pp. 329-341 ◽  
Author(s):  
Raji Shankar ◽  
Marko Lončar
Keyword(s):  
Gas Sensing ◽  
Wavelength Region ◽  
Photonic Devices ◽  
Ring Resonators ◽  
Space Communications ◽  
Mid Infrared ◽  
Silicon Photonic ◽  
Processing Techniques ◽  
Silicon Based

AbstractThe mid-infrared (IR) wavelength region (2–20 µm) is of great interest for a number of applications, including trace gas sensing, thermal imaging, and free-space communications. Recently, there has been significant progress in developing a mid-IR photonics platform in Si, which is highly transparent in the mid-IR, due to the ease of fabrication and CMOS compatibility provided by the Si platform. Here, we discuss our group’s recent contributions to the field of silicon-based mid-IR photonics, including photonic crystal cavities in a Si membrane platform and grating-coupled high-quality factor ring resonators in a silicon-on-sapphire (SOS) platform. Since experimental characterization of microphotonic devices is especially challenging at the mid-IR, we also review our mid-IR characterization techniques in some detail. Additionally, pre- and post-processing techniques for improving device performance, such as resist reflow, Piranha clean/HF dip cycling, and annealing are discussed.

Characterization of Na(+)-H+ antiporter activity associated with human cheek epithelial cells

1994 ◽  
Vol 267 (1) ◽  
pp. C84-C93 ◽  
Author(s):  
E. J. McMurchie ◽  
S. L. Burnard ◽  
G. S. Patten ◽  
E. J. Lee ◽  
R. A. King ◽  
...  
Keyword(s):  
Epithelial Cells ◽  
Human Subjects ◽  
Maximum Velocity ◽  
Hill Coefficient ◽  
Transport Activity ◽  
Uptake Activity ◽  
Dimethyl Amiloride ◽  
Mouth Wash ◽  
Na Uptake

Na+ transport activity was characterized in human cheek epithelial cells obtained from normotensive adult subjects. The cells were isolated using a mouth-wash procedure and assayed for Na+ uptake using a radioactive (22Na+) rapid filtration assay. Cheek cells displayed proton-dependent Na+ uptake activity that was dependent on the magnitude of the externally directed proton gradient measured using the fluorescent probe 2',7'-bis(carboxyethyl)-5(6)-carboxyfluorescein to determine intracellular pH. Amiloride, ethylisopropylamiloride (EIPA), 5-(N,N-dimethyl)-amiloride, 5-(N-methyl-N-isobutyl)-amiloride (MIA), and 5-(N,N-hexamethylene)-amiloride (NNHA) all inhibited proton-dependent Na+ uptake, with MIA, EIPA, and NNHA being the most potent. The Michaelis constant (Km) for extracellular Na+ was 5.7 mM, while the maximum velocity for Na(+)-H+ antiporter activity was 4.3 nmol Na+.mg protein-1.30s-1. The Km for intracellular H+ was 0.17 microM, with a Hill coefficient of 0.7. Stimulation by ouabain and inhibition by bumetanide of cheek cell proton-dependent Na+ uptake indicated only relatively low activities of Na(+)-K(+)-ATPase and Na(+)-K(+)-2Cl- cotransport, respectively. These results are consistent with the presence of Na(+)-H+ antiporter activity in cheek cells. Cheek cells therefore provide a convenient, relatively noninvasive source of tissue for examining Na(+)-H+ antiporter activity in human subjects.

scholarly journals Fabrication of A Shear Force Sensor for The Evaluation of The Effects of Skin Deformation on Pressure Ulcer Formation

2000 ◽  
Vol 120 (8-9) ◽  
pp. 1092-1097
Author(s):  
Seiichi Suzuki ◽  
Fukuko Ohnuma ◽  
Chikako Yanami ◽  
Tomoko Murayama ◽  
Makoto Akiyoshi
Keyword(s):  
Pressure Ulcer ◽  
Shear Force ◽  
Force Sensor ◽  
Ulcer Formation ◽  
Skin Deformation
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