Microscale Compression and Shear Testing of Soft Materials Using an MEMS Microgripper With Two-Axis Actuators and Force Sensors

Microgripper design and evaluation for automated µ-wire assembly: a survey

“…Another common shape is flexible leaf hinge which is capable of producing large displacements of the jaw tip, along with a reduced experienced stress along each hinge due to the larger area of where the stress is dispersed. However, due to the lack of circular rotation, the accuracy of the system decreases (Qingsong 2015;Beyeler et al 2007;Qu et al 2017). The advantages of the flexible leaf hinge do not however justify its use as the most important required feature is the accuracy.…”

“…The flexible hinge designs have the advantage of a greater position repeatability and accuracy. Various types of monolithic flexible hinge grippers have been studied along with the different configurations available to produce a flexible hinge with a large jaw aperture (Nah and Zhong 2007;Beyeler et al 2007;Qu et al 2017;Cauchi et al 2018). Prior research has suggested to employ the corner fillet hinge design to enable the maximum change in jaw tip displacement (Zubir et al 2009).…”

“…The temperature of the tips must often be considered and measured during operation, as high temperature may cause damage to micro-objects during the manipulation process. An electrothermal actuated microgripper produced was capable of achieving motion along two axis, which was stated as being a first in research (Qu et al 2017). The gripper also integrated a capacitive force detection system capable of measuring the amount of force applied to the gripper jaws (Qu et al 2017).…”

“…An electrothermal actuated microgripper produced was capable of achieving motion along two axis, which was stated as being a first in research (Qu et al 2017). The gripper also integrated a capacitive force detection system capable of measuring the amount of force applied to the gripper jaws (Qu et al 2017). The researchers also noted that heat conducting along the tip may also cause micro-object damage (Qu et al 2017).…”

“…The gripper also integrated a capacitive force detection system capable of measuring the amount of force applied to the gripper jaws (Qu et al 2017). The researchers also noted that heat conducting along the tip may also cause micro-object damage (Qu et al 2017). Within the medical industry, microgrippers have been designed to manipulate red blood cells.…”