Ir Detectors: Ultrahigh Infrared Photoresponse from Core-Shell Single-Domain-VO2/V2O5Heterostructure in Nanobeam (Adv. Funct. Mater. 13/2014)

Homojunction internal photoemission far-infrared detectors: Photoresponse performance analysis

The concept of homojunction infernal photoemission far-infrared (FIR) detectors has been successfully demonstrated using forward biased Si p-i-n diodes at 4.2 K. The basic structure consists of a heavily doped IR absorber layer and an intrinsic (or lightly doped) layer. An interfacial workfunction between these regions defines the long-wavelength cutoff (X,) of the detector. Three types of dete...

Materials and Wireless Microfluidic Systems for Electronics Capable of Chemical Dissolution on Demand (Adv. Funct. Mater. 92015)

Intrinsically core-shell plasmonic dielectric nanostructures with ultrahigh refractive index.

Topological insulators are a new class of quantum materials with metallic (edge) surface states and insulating bulk states. They demonstrate a variety of novel electronic and optical properties, which make them highly promising electronic, spintronic, and optoelectronic materials. We report on a novel conic plasmonic nanostructure that is made of bulk-insulating topological insulators and has a...

Single Chain Core-Shell Nanostructure

A combination of static and dynamic laser light scattering has revealed that at temperatures higher than ,33 ±C a linear poly(N-isopropylacrylamide) chain grafted with poly(ethylene oxide) (PNIPAMg-PEO) in water can undergo a “coil-to-globule” transition to form a stable single chain core-shell nanostructure with the collapsed PNIPAM chain backbone as the hydrophobic core and the grafted PEO br...

Bolometric infrared photoresponse of suspended single-walled carbon nanotube films.

The photoresponse in the electrical conductivity of a single-walled carbon nanotube (SWNT) film is dramatically enhanced when the nanotube film is suspended in vacuum. We show here that the change in conductivity is bolometric (caused by heating of the SWNT network). Electron-phonon interactions lead to ultrafast relaxation of the photoexcited carriers, and the energy of the incident infrared (...