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Light‐responsive microactuators composed of vertically aligned carbon nanotube (CNT) forests mixed with poly(N‐isopropylacrylamide) (PNIPAM) hydrogel composites are studied. The benefit of this composite is that CNTs act as a black absorber to efficiently capture radiative heating and trigger PNIPAM contraction. In addition, CNT forests can be patterned accurately using lithography to span structures...
Sensing of neurotransmitters (NTs) down to nm concentrations is demonstrated by utilizing self‐assembled monolayers of plasmonic 60 nm Au nanoparticles in close‐packed arrays immobilized onto glass substrates. Multiplicative surface‐enhanced Raman spectroscopy enhancements are achieved by integrating Fe(III) sensitizers into the precisely‐defined <1 nm nanogaps, to target dopamine (DA) sensing...
Dynamically tunable reflective structural colors are attractive for reflective displays (electronic paper). However, it is challenging to tune a thin layer of structural color across the full red–green–blue (RGB) basis set of colors at video rates and with long‐term stability. In this work, this is achieved through a hybrid cavity built from metal–insulator–metal (MIM) “nanocaves” and an electrochromic...