Optimal load of mobile robots, while carrying a load with predefined motion precision is an important consideration regarding their applications. In this paper a general formulation for finding maximum load carrying capacity of flexible joint mobile manipulators is presented. Meanwhile, overturning stability of the system and precision of the motion on the given end-effector trajectory are take...

We report a compact light source that incorporates a semiconductor light-emitting diode, nanostructured distributed feedback (DFB) Bragg grating and spin-coated thin conjugated polymer film. With this hybrid structure, we transferred electrically generated 390 nm ultraviolet light to an organic polymer via optical pumping and out-couple green luminescence to air through a second-order DFB grati...

Abstract Traditional microwaves absorption materials (MAMs) are applied in the form of coatings, generally inflexible, with high production costs and poor adaptability to applications different locations. The diversification application scenarios requires multifunctionalities, but it is extremely challenging integrate multifunctionalities within single material at present. Herein, a multifuncti...

Electrostatic clutching offers lightweight, energy-efficient, and fast controllable force transmission for exoskeletons and walking robots. Clutching is achieved by charging two electrically-conductive clutch plates with micrometerscale thickness separated by a thin dielectric insulating layer. Because the clutch acts like a capacitor, power is only required while changing states, not to mainta...

Abstract To meet the high demand of data transmission capacity, optical communications systems have been developed. In order to increase channel numbers for larger communication bandwidth, multi-mode lasers and laser arrays can be used. As an alternative coherent light source, frequency comb (OFC) contains multi-wavelength signal, hence enables with stream tens terabit/s. Fully integrated elect...