Results 121 to 130 of about 171,960 (303)

Material discrimination and mixture ratio estimation in nanocomposites via harmonic atomic force microscopy

Beilstein Journal of Nanotechnology, 2017
Harmonic atomic force microscopy (AFM) was employed to discriminate between different materials and to estimate the mixture ratio of the constituent components in nanocomposites.
Weijie Zhang, Yuhang Chen, Xicheng Xia, Jiaru Chu   +3 more
doaj   +1 more source

Facilitating Expedited Drug Approval– the Past, Present, and Future of Clinical Trials for Pediatric Rheumatic Disease

Arthritis Care &Research, Accepted Article.
Pamela F. Weiss, Hermine I. Brunner
wiley   +1 more source

Multilayer Soft Photonic Arrays Inspired by Cephalopod Skin for High‐Density, Independent, and Multimodal Actuation

Advanced Functional Materials, EarlyView.
A vertically stacked, DEA‐driven photonic array inspired by cephalopod skin, featuring highly crystalline colloidal crystal gels with vivid color, low FWHM and scalability is presented. The multilayer design removes lateral pixel interference, achieving near‐100% fill factor with fully independent RGB actuation.
Maga Kim, Imbo Kong, Do Yoon Kim, Jaeyoung Choi, Seong‐Yu Choi, Yun Hyeok Lee, Sihwan Lee, Byung Ik Park, Gimin Sung, In‐Suk Choi, Wook Sung Kim, Jeong‐Yun Sun   +11 more
wiley   +1 more source

Contact Lens with Moiré Patterns for High‐Precision Eye Tracking

Advanced Functional Materials, EarlyView.
This work presents a passive contact lens for high‐precision eye tracking, integrating a microscopic moiré grating label. The parallax‐induced shift of macroscopic moiré patterns enables angle measurement with 0.28° precision using a standard camera under ambient light.
Ilia M. Fradkin, Roman V. Kirtaev, Mikhail S. Mironov, Dmitriy V. Grudinin, Alexander A. Marchenko, Marina M. Chugunova, Valentin R. Solovei, Alexander V. Syuy, Andrey A. Vyshnevyy, Ilya P. Radko, Aleksey V. Arsenin, Valentyn S. Volkov   +11 more
wiley   +1 more source

Teeth Surface Equation of the Mesh Pair for Asymmetrical Tooth of Oscillating Teeth End Face Harmonic Gear

Jixie chuandong, 2017
The structure of oscillating teeth end face harmonic gear is introduced on the basis of introducing the asymmetrical coefficient for describing the degree of tooth asymmetry.
Li Fei, Ma Hongru, Huang Rui, Zhang Youlin   +3 more
doaj  

Focal plane transport assembly for the HEAO-B X-ray telescope [PDF]

, 1979
The High Energy Astronomy Observatory - Mission B (HEAO-B), an earth orbiting X-ray telescope facility capable of locating and imaging celestial X-ray sources within one second of arc in the celestial sphere, is considered.
Allard, P. D., Brissette, R., Keller, F., Strizhak, E., Wester, E.   +4 more
core   +1 more source

Ratchet-like dynamics of fluxons in annular Josephson junctions driven by bi-harmonic microwave fields

, 2004
Experimental observation of the unidirectional motion of a topological soliton driven by a bi-harmonic ac force of zero mean is reported. The observation is made by measuring the current-voltage characteristics for a fluxon trapped in an annular ...
A. Barone, A. Kemp, A. V. Ustinov, C. Coqui, M. Salerno, P. Hänggi, Y. Zolotaryuk   +6 more
core   +1 more source

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

Advanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang, Ying Chen, Chenyang Shi, Progyateg Chakma, James J. De Yoreo, Chun‐Long Chen   +5 more
wiley   +1 more source

Research progress of harmonic drive used in spacecraft

Jixie chuandong
This paper illustrated the importance of harmonic drive used in space expandable mechanism such as antennas, solar arrays and mechanical arms. Research progress of harmonic drive used in spacecraft was reviewed from four aspects which were tooth profile ...
CANG Yuetian, HAO Hong, SUN Fanxin, LI Jian, ZHANG Kaifeng, ZHOU Hui, XING Zhenhua   +6 more
doaj  

Study of THD in Five Phase PWM Inverter Drive Using Dual Stage Common Mode Filter Using Simulation [PDF]

, 2015
A five phase inverter drive is the latest innovative drive, which has the potential to over through the three phase induction motor. Industries will prefer compatible, most reliable converters and inverters in their power systems. To design and construct
Ananda, A.S., Manjesh, .
core