Fundamental study on interfacial force measurements under high frequency shear

2021 ◽  
Vol 2021.59 (0) ◽  
pp. 05b3
Author(s):  
Tomohiro YAMAFUKU ◽  
Takumi ISHIKAWA ◽  
Hiroshige MATSUOKA
Keyword(s):  
High Frequency ◽  
Force Measurements ◽  
Fundamental Study ◽  
Interfacial Force

Fundamental study on interfacial force measurements under high frequency shear

2020 ◽  
Vol 2020.58 (0) ◽  
pp. 04b3
Author(s):  
Takumi CHIKADA ◽  
Yuta YAMANAKA ◽  
Takumi ISHIKAWA ◽  
Hiroshige MATSUOKA
Keyword(s):  
High Frequency ◽  
Force Measurements ◽  
Fundamental Study ◽  
Interfacial Force

Fundamental study on interfacial force measurements under high frequency shear

2018 ◽  
Vol 2018 (0) ◽  
pp. S1610002
Author(s):  
Takumi CHIKADA ◽  
Shio KUNISAWA ◽  
Yuta YAMANAKA ◽  
Hiroshige MATSUOKA
Keyword(s):  
High Frequency ◽  
Force Measurements ◽  
Fundamental Study ◽  
Interfacial Force

Fundamental study on interfacial force measurements using QCM

2017 ◽  
Vol 2017 (0) ◽  
pp. PA-01
Author(s):  
Yuto NAKATA ◽  
Ryo SHINOHARA ◽  
Satoru MAEGAWA ◽  
Hiroshige MATSUOKA ◽  
Shigehisa FUKUI
Keyword(s):  
Force Measurements ◽  
Fundamental Study ◽  
Interfacial Force

Development of New Actuators for Flapping Wing Flight

2007 ◽  
Vol 539-543 ◽  
pp. 36-41 ◽  
Author(s):  
Dong Teak Chung
Keyword(s):  
High Frequency ◽  
Thrust Force ◽  
High Energy ◽  
Resonance Oscillation ◽  
Force Measurements ◽  
Linkage Mechanism ◽  
Electric Actuator ◽  
Brushless Motor ◽  
Four Bar Linkage ◽  
Small Stroke

Flying robots with flapping wings are preferred over conventionally fixed or rotational wings in terms of hovering capability for a simple mechanical configuration. Until recently, available actuators for such a robot are limited to (1) a conventional motor with four-bar linkage mechanism or (2) a piezo electric actuator, but none of them could provide enough lift because of low flapping frequency, small stroke angles, and/or frequent mechanical failure. A new actuator capable of generating large stroke angles with high frequency is developed. It consists of an out-runner brushless motor with a modified motor driver attached to a torsion spring. The wing is attached directly on the cap of the motor. A prototype is built and preliminary thrust force measurements are performed. Properties of wing materials suitable for powerful and robust actuators will be discussed. The actuator employed in the present study utilizes resonance oscillation, which leads to high energy efficiency. Further study of wing shape and directional stiffness is needed for generating higher lift capability.

scholarly journals Fundamental Study on the Effect of High-frequency Vibration in the Vertical and Lateral Directions on Ride Comfort

2010 ◽  
Vol 51 (2) ◽  
pp. 101-104 ◽  
Author(s):  
Chizuru NAKAGAWA ◽  
Ryohei SHIMAMUNE ◽  
Ken WATANABE ◽  
Erimitsu SUZUKI
Keyword(s):  
High Frequency ◽  
Ride Comfort ◽  
Fundamental Study ◽  
High Frequency Vibration

scholarly journals Fundamental study on a high-frequency vibration evaluation in a test stand for magnetically levitated vehicles

2015 ◽  
Vol 81 (832) ◽  
pp. 15-00384-15-00384 ◽  
Author(s):  
Masashi KABUTOMORI ◽  
Toshiaki MURAI ◽  
Hiroshi YOSHIOKA ◽  
Yoshiaki TERUMICHI
Keyword(s):  
High Frequency ◽  
Test Stand ◽  
Fundamental Study ◽  
High Frequency Vibration ◽  
Magnetically Levitated

Fundamental Study on High-Frequency Ultrasound Probes Fabricated by Aerosol Deposition Method and Hydrothermal Method

2008 ◽  
Vol 388 ◽  
pp. 159-162
Author(s):  
Akito Endo ◽  
Jun Akedo ◽  
Shinichi Takeuchi
Keyword(s):  
Hydrothermal Method ◽  
High Frequency ◽  
Aerosol Deposition ◽  
High Frequency Ultrasound ◽  
Fundamental Study ◽  
A Value ◽  
Resonance Frequencies ◽  
Aerosol Deposition Method ◽  
Ultrasound Probes ◽  
Frequency Ultrasound

The ultrasound probes utilized in this study were fabricated using lead zirconium titanate (PZT), which was deposited using two different methods—the aerosol deposition (AD) method and the hydrothermal method. The fabricated ultrasound probes had the same structure wherein an electrode and an acoustic backing block were attached to each transducer. In this study, we have compared the acoustic characteristics of a high-frequency ultrasound probe fabricated by the AD method with those of a probe fabricated using the hydrothermal method; further, we have studied and hence determined the optimal process that can be used in the fabrication of high-frequency ultrasound probes with a resonance frequency of 40 MHz. As a result, when the pickup voltage was compared, the ultrasound probes fabricated by the AD method exhibited a value 9.5 times higher than that of the probes fabricated by the hydrothermal method. Moreover, the ultrasound probes fabricated by the AD method were found to transmit pulses at resonance frequencies of 28 MHz, 45–50 MHz, and 82–88 MHz.

scholarly journals Dendronized oligoethylene glycols with phosphonate tweezers for cell-repellent coating of oxide surfaces: coarse-scale and nanoscopic interfacial forces

RSC Advances ◽  
2021 ◽  
Vol 11 (29) ◽  
pp. 17727-17733
Author(s):  
Julian Czajor ◽  
Wasim Abuillan ◽  
Dinh Vu Nguyen ◽  
Christopher Heidebrecht ◽  
Evan A. Mondarte ◽  
...  
Keyword(s):  
Cell Adhesion ◽  
Oxide Surfaces ◽  
Specific Cell ◽  
Force Measurements ◽  
Coarse Scale ◽  
Interfacial Forces ◽  
Oligoethylene Glycols ◽  
Interfacial Force

Coarse-scale and nanoscopic interfacial force measurements unraveled how dendronized oligoethylene glycols with phosphonate tweezers prevent non-specific cell adhesion to oxide surfaces.

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