Current metal film-based electronics, while sensitive to external stretching, typically fail via uncontrolled cracking under a relatively small strain (~30%), which restricts their practical applications. To address this, here we report a design approach inspired by the stereocilia bundles of a cochlea that uses a hierarchical assembly of interfacial nanowires to retard penetrating cracking. This structured surface outperforms its flat counterparts in stretchability (130% versus 30% tolerable strain) and maintains high sensitivity (minimum detection of 0.005% strain) in response to external stimuli such as sounds and mechanical forces. The enlarged stretchability is attributed to the two-stage cracking process induced by the synergy of micro-voids and nano-voids. In-situ observation confirms that at low strains micro-voids between nanowire clusters guide the process of crack growth, whereas at large strains new cracks are randomly initiated from nano-voids among individual nanowires.

Automatic operation system with industrial robots has become more and more popular, especially with the urgent requirement from 3C (Communication, computer and consumer electronics) manufactory. A robot cell, which often involves one or more robots and accessory equipment, can be regarded as part of the larger theme of cellular manufacturing. The objective that most interests manufacturers is the investment return rate. It is largely determined by the productivity of robotic cell, and the leading time of robotic production system. Therefore, a fast and efficient method to design a robotic cell layout with the maximum throughput for a given task is undeniably a worthy research topic. This paper attempts to discuss the challenges and key technologies in the robotic cell layout optimal design. The proper selection of configuration for task, manual operation skill learning and translation, collaborative design tool-chain, optimization in cell layout and operation scheduling, optimal end-of-arm tooling design, and human-robot collaboration are included in this discussion with existing or on-going problem-solving key technologies.

Industrial robot is proven t effective in terms of flexibility, repeatabilit functions offer improved accuracy. Since the a robotic cell are identical, it is sufficient sequence of robot moves, in case of single-o implement the tasks. How to achieve the maximum throughput in a robotic cell improvement in throughput, is always the hig in engineering practice, especially in communication, computer and consumer optimality in cell layout and optimistic robot come from robotic cell throughput optimiza terms of the steady state cycle time to produ paper, an analytical framework for schedulin with single-or dual-gripper is developed. constraints are considered in validation, inclu pick up, non-free/free process, and inadmi indicated that a dual-gripper robot can gain a throughput in most cases. The resulting dia clear overview of the scheduling and links be and cell pattern, by comparing the resu revenue with the additional equipment costs.

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