Results 61 to 70 of about 27,631 (265)

Miniature Soft Robot With Magnetically Reprogrammable Surgical Functions

Advanced Materials, EarlyView.
Miniature soft robots have great prospects to revolutionize minimally invasive treatments. Here we present a miniature soft robot, which can be reprogrammed to perform five surgical functionalities with six‐degrees‐of‐freedom motions. This soft robot can prospectively make minimally invasive surgery considerably safer and painless, and enable ...
Chelsea Shan Xian Ng, Yu Xuan Yeoh, Nicholas Yong Wei Foo, Keerthana Radhakrishnan, Guo Zhan Lum   +4 more
wiley   +1 more source

Design of a Longitudinal-Bending Elliptical Vibration Ultrasonic Transducer with a Bent Horn

Actuators
The thin and straight horn of the ultrasonic transducer is located in the center of the thick transducer, so that the tool tip of the ultrasonic vibration turning tool holder cannot be located on the outermost side of the entire tool holder, which leads ...
Zhiyong Huang, Mingshuo Zhang, Jiteng Li, Xinggang Jiang, Daxi Geng, Deyuan Zhang   +5 more
doaj   +1 more source

Effects of Ultrasonic Vibrations on Nerve Tissues.

Experimental Biology and Medicine, 1951
SummaryThe excised crayfish ventral nerve cord exposed to ultrasound (35 watts/ cm2, frequency 1 mc) exhibited a reduction of spontaneous activity after several seconds exposure and recovered its original activity about one minute after the ultrasound was turned off. Frogs positioned so that ultrasound was incident on the dorsal surface over the lumbar
V J, WULFF, W J, FRY, D, TUCKER, F J, FRY, C, MELTON   +4 more
openaire   +2 more sources

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

Study on surface quality in ultrasonic vibration grinding of SiC ceramics with small diameter grinding wheel

Jin'gangshi yu moliao moju gongcheng, 2020
The SiC ceramic parts were machined by ultrasonic vibration grinding and common grinding with small diameter grinding wheel. The effects of grinding wheel linear speed, workpiece feed speed, grinding depth and ultrasonic amplitude on ground surface ...
XU Luxin, LI Hua, CAI Xiaotong, ZHOU Peixiang, CHEN Yiwen, WU Jiafu   +5 more
doaj  

Machinablity improvement with ultrasonic vibration–assisted micro-milling

Advances in Mechanical Engineering, 2018
An ultrasonic vibration–assisted micro-milling with horizontal vibration of workpiece is investigated in this article. A vibration platform with maximum amplitude of 15 μm based on universal ball support structure is designed and built by our group ...
Lin-hong Xu, Hao-bo Na, Guang-chao Han
doaj   +1 more source

A Geometrically Transient Platform for Bioelectronic Implants

Advanced Materials, EarlyView.
Minimally invasive bioelectronic implants often compromise performance for smaller sizes. To resolve this optimization dilemma, a wireless bioelectronic implant with a transient geometry is introduced (MiFi). The origami‐inspired device miniaturizes up to sixfold for syringe insertion and autonomously unfolds post‐implantation.
Selin Olenik, John D. Goodwin, Atharv Naik, Philip Coatsworth, Ioi Chit Cheung, Farbod Amirghasemi, Anies Sohi, Ehsan Abedi, Tayeb Tadlaoui, Maral P. S. Mousavi, Andriy S. Kozlov, Victoria Salem, Andrew S. Cowburn, Firat Guder   +13 more
wiley   +1 more source

Transdermal delivery of insulin by ultrasonic vibration

Journal of Pharmacy and Pharmacology, 1991
Abstract Ultrasonic vibration has been used to deliver insulin through the skin of hairless mice fasted overnight and partially immersed in an aqueous solution of insulin (20 units mL−1). The skin surface was exposed to ultrasonic vibration in two ultrasonic energy ranges (3000–5000 Pa and 5000–8000 Pa) at 48 kHz for 5 min. Blood glucose
K, Tachibana, S, Tachibana
openaire   +2 more sources

Field‐Programmed Anisotropy in Magneto‐Piezoelectric Composites for Material‐Encoded Mechanoperception

Advanced Materials, EarlyView.
Field‐programmed anisotropy imparts material‐level intelligence to soft composites. Magnetic torque dynamics drive magneto‐piezoelectric nanowires from random dispersion into deterministic axial alignment. The resulting hierarchical percolation networks confine electromechanical coupling to specific axes and intrinsically decouple superposed force ...
Yubin Kim, Yumin Kwon, Dabin Kim, Minsun Oh, Jin Young Jung, Dongyeong Gim, Kootak Hong, Jun Yeon Hwang, Sang‐Woo Kim, Minjeong Ha   +9 more
wiley   +1 more source

Study on machining by the use of ultrasonic screw vibration. (3rd report). Ultrasonic vibration tapping.

Journal of the Japan Society for Precision Engineering, 1989
This paper deals with the ultrasonic screw vibration tapping for aluminium and its alloy. Cutting torque, chip geometry and female thread shape were investigated and the following results were obtained. In the case of pure aluminium tapping, the torque ratio (i. e.
Yasuo SUZUKI, Susumu KAMO, Masami UNO
openaire   +3 more sources