Nanoscience and Nanotechnology Commons^™

ABSTRACT: Dynamic morphing of marine species to match with environment

changes in color and texture is an advanced means for surviving, self-defense, and

reproduction. Here we use colloids that are placed inside a multilayered structure to

demonstrate color and texture morphing. The multilayer is composed of a thermal

insulating base layer, a light absorbing mid layer, and a liquid top layer. When external

light of moderate intensity (∼0.2 W cm−2) strikes the structure, colloids inside the

liquid layer will be assembled to locations with an optimal absorption. When this

system is exposed to continuous laser pulses, more than 18 000 …

Optical properties of colloidal plasmonic titanium nitride nanoparticles are examined with an eye on their photothermal and photocatalytic applications via transmission electron microscopy and optical transmittance measurements. Single crystal titanium nitride cubic nanoparticles with an average size of 50 nm, which was found to be the optimum size for cellular uptake with gold nanoparticles [1], exhibit plasmon resonance in the biological transparency window and demonstrate a high absorption efficiency. A self-passivating native oxide at the surface of the nanoparticles provides an additional degree of freedom for surface functionalization. The titanium oxide shell surrounding the plasmonic core can create new opportunities …