Results 31 to 40 of about 438 (171)

Design of a flexible piezoelectric microgripper based on combined amplification principles

Nanotechnology and Precision Engineering, 2019
Aiming to address the problem of the low amplification ratio of traditional microgrippers, a two-stage microgripper based on the principle of combined amplification was designed with a high amplification ratio and large displacement, using a simple and ...
Xiaodong Chen, Zilong Deng, Siya Hu, Jinhai Gao, Xingjun Gao   +4 more
doaj   +1 more source

Tetherless thermobiochemically actuated microgrippers [PDF]

Proceedings of the National Academy of Sciences, 2009
We demonstrate mass-producible, tetherless microgrippers that can be remotely triggered by temperature and chemicals under biologically relevant conditions. The microgrippers use a self-contained actuation response, obviating the need for external tethers in operation. The grippers can be actuated en masse, even while spatially separated.
Timothy G, Leong, Christina L, Randall, Bryan R, Benson, Noy, Bassik, George M, Stern, David H, Gracias   +5 more
openaire   +2 more sources

Toward an Electroactive Polymer-Based Soft Microgripper [PDF]

IEEE Access, 2021
Grasping and manipulating objects on a microscale hold great promise, especially using mechanical structures made from soft materials that enable, for example, safe operations during microsurgery. Soft robots should be preferred to manipulate micro-objects, but their adoption requires, inter alia, soft transducers that can operate either in air or in ...
Peng, Chia-Ju, Seurre, Lauréline, Cattan, Eric, Nguyen, Giao Tran Minh, Plesse, Cedric, Chassagne, Luc, Cagneau, Barthélemy   +6 more
openaire   +5 more sources

Development and Hybrid Position/Force Control of a Dual-Drive Macro-Fiber-Composite Microgripper

Sensors, 2018
This paper reports on the development, implementation and hybrid control of a new micro-fiber-composite microgripper with synchronous position and force control capabilities.
Jin Zhang, Yiling Yang, Junqiang Lou, Yanding Wei, Lei Fu   +4 more
doaj   +1 more source

Experimental and Numerical Investigation of the Arms Displacement in a New Electrothermal MEMS Actuator [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2017
Microgrippers can be effectively applied for handling, positioning and assembling of the micro components. In the present study, a new design of a U-shape electrothermal microgripper was fabricated and developed with the voltages correspond between 1 to ...
M. Kolahdoozan, A. Rouhani Esfahani, M. Hassani   +2 more
doaj  

Design and Control of a Piezoelectric-Driven Microgripper Perceiving Displacement and Gripping Force

Micromachines, 2020
A piezoelectric-driven microgripper with three-stage amplification was designed, which is able to perceive the tip displacement and gripping force. The key structure parameters of the microgripper were determined by finite element optimization and its ...
Yanru Zhao, Xiaojie Huang, Yong Liu, Geng Wang, Kunpeng Hong   +4 more
doaj   +1 more source

Self-Biased-SMA Drive PU Microgripper with Force Sensing in Visual Servo

International Journal of Advanced Robotic Systems, 2013
An innovative design of a polyurethane microgripper system with force sensor is developed for the measurement of gripping force in vision-based control. A microgripper mechanism integrated with a force sensing arm is fabricated by an excimer laser.
Ren-Jung Chang, Chih-Cheng Shiu, Chih-Yi Cheng   +2 more
doaj   +1 more source

Design and Experimental Validation of a Microgripper

Journal of Robotics and Mechatronics, 2001
In this paper we present the mechanical design of a microgripper performing microassembly tasks with objects whose dimensions are less than 1mm with a maximum grasping action of 0.9N and fingers displacement of 0.6mm. The efficiency of the microgripper has been experimentally tested by using a proper test-bed and laboratory experiences. The results are
G. CARBONE, CECCARELLI M., KERLE H., RAATZ A.   +3 more
openaire   +3 more sources

Biologic Tissue Sampling With Untethered Microgrippers [PDF]

Gastroenterology, 2013
Even with advances in non-invasive diagnosis of diseases such as cancer or inflammatory diseases, tissue biopsy coupled with histopathologic examination remains the gold standard in establishing an accurate diagnosis.1–2 Generally, effective tissue diagnosis is fundamentally based on biopsying lesions that are suspicious based on visual inspection ...
Evin, Gultepe, Sumitaka, Yamanaka, Kate E, Laflin, Sachin, Kadam, Yoosun, Shim, Alexandru V, Olaru, Berkeley, Limketkai, Mouen A, Khashab, Anthony N, Kalloo, David H, Gracias, Florin M, Selaru   +10 more
openaire   +2 more sources

Stability analysis of FGM microgripper subjected to nonlinear electrostatic and temperature variation loadings

Science and Engineering of Composite Materials, 2016
Considering the desired characteristics of functionally gradient materials (FGM), such as good thermal and wear resistance, this paper investigates the mechanical behavior of FGM microgripper under DC voltage and temperature variation. It is assumed that
Jahanghiry Reza, Yahyazadeh Rajab, Sharafkhani Naser, Maleki Vahid A.   +3 more
doaj   +1 more source