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Localized surface plasmon resonance (LSPR) arises when light interacts with metallic nanoparticles (NPs). When nanoparticles (NPs) assemble together, the plasmon coupling effect between the NPs often leads to new features in the LSPR of the assembled structure. Understanding the plasmon coupling in the complex assemblies will greatly benefit the development of new plasmonic devices. Here we demonstrate...
The assembly of multi miniature parts needs a variety of grippers, a single gripper has difficulties in completing the task of picking up and operating many different miniature parts. In a formerly developed system, a combination type gripper module was integrated. It was comparatively complicated and difficult to be adapted to a new set of parts to be assembled. As a more preferable solution for...
The importance of fixturing is often underestimated in the development of precision assembly system for miniature products. A 5-part component of a micro accelerometer is selected as an example in this paper. The sensitive structure that influences the performance of accelerometer most is the flexible beam on one part. A fixture with flexible fastening mechanism was proposed for assembly these miniature...
An improved torque control method-torque/time control method is proposed. The correlation between torque and Pre-tightening force is theoretically analyzed in the bolt joint assembly procedure, from which the equation of the torque and pre-tightening force is acquired in a system of stiffness invariable. When take the slope of torque-time changing and system stiffness of joint parts into consideration,...
In order to realize automatic precision assembly for micro hole-peg, an assembly system based on machine vision and passive flexible mechanism was developed. Machine vision was guided by precision moving platform to detect and control the position at the non-contact phase, the passive flexible mechanism compensated the position error at the contact phase. The principle of assembly system was introduced...
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