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Topographical Micropatterns
In article number 2103702, Aaron R. Wheeler and co‐workers introduce a new technique for forming permanent topographical micropatterns, relying on optoelectronic tweezers (OET) and in situ UV photopolymerization. For the first time, an OET system was used to assemble working microcapacitive circuits, and the capacity to preserve these systems in photocured resins (which...
Micromanipulation techniques that are capable of assembling nano/micromaterials into usable structures such as topographical micropatterns (TMPs) have proliferated rapidly in recent years, holding great promise in building artificial electronic and photonic microstructures. Here, a method is reported for forming TMPs based on optoelectronic tweezers in either “bottom‐up” or “top‐down” modes, combined...
Ionic Diodes
In article number 2100383, Xinyu Liu and co‐workers utilize horizontally aligned multi‐walled carbon nanotubes (MWCNTs) with polyelectrolyte decorated terminals as ion nanochannels to construct ionic diodes. The working mechanism of the CNT‐based ionic diode is systematically investigated through both numerical simulations and experiments. A general guideline for designing 1D nanochannel‐polyelectrolyte‐based...
The rectification of ion transport through biological ion channels has attracted much attention and inspired the thriving invention and applications of ionic diodes. However, the development of high‐performance ionic diodes is still challenging, and the working mechanisms of ionic diodes constructed by 1D ionic nanochannels have not been fully understood. This work reports the systematic investigation...
Optical micromanipulation has become popular for a wide range of applications. In this work, a new type of optical micromanipulation platform, patterned optoelectronic tweezers (p‐OET), is introduced. In p‐OET devices, the photoconductive layer (that is continuous in a conventional OET device) is patterned, forming regions in which the electrode layer is locally exposed. It is demonstrated that micropatterns...
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