Silver nanowire array infrared polarizers

Abstract

A silver nanowire array micropolarizer within an anodic alumina membrane (AAM) was fabricated by anodization of pure Al foil and electrodeposition of Ag, respectively. X-ray diffraction, scanning electron microscopy, and transmission electron microscopy investigations reveal that the nanowires are essentially single crystals, and have an average diameter of 90 nm. Spectrophotometer measurements show that the silver nanowire arrays embedded in the AAM can only transmit vertically polarized light to the wires. An extinction ratio of 25–26 dB and average insertion loss of 0.77 dB in the wavelength range 1–2.2 μm were obtained, respectively. Therefore the Ag nanowire/AAM can be used as a wire-grid type polarizer.

Photocatalytic oxidation of aniline using Ag+-loaded TiO2 suspensions

“…Silver thus formed is not oxidized back by the holes in the dark as holes are the minority carrier. The presence of free Ag has earlier been observed in XRD with irradiated Ag + -loaded TiO 2 sample [27] and with silver nanowire [28]. of aniline in the absence and the presence of 1 Â 10 À5 mol dm À3 of Ag + at pH 9.2.…”

Highly Ordered Anodic Porous Alumina Formation by Self‐Organized Anodizing

“…[546], Ó 2002, Institute of Electrical and Electronics Engineers, Inc.). Arrays of Ag [529,552,553], Au [554][555][556], Co [557][558][559], Cu [560], Ni [540,556,[561][562][563][564][565][566], Pb [567], and Pd [568] nanowires and nanorods were obtained successfully by electrodeposition. A highly ordered array of silver nanowires electrodeposited in the AAO template is presented in Figure 1.44.…”

Flexible and Robust 2D Arrays of Silver Nanowires Encapsulated within Freestanding Layer-by-Layer Films

“…[8,[52][53][54][55][56][57] In this study, we have tested the feasibility of incorporating metal nanowires into freestanding elastic structures by using LbL assembly. We have conducted a detailed micromechanical study of the resulting flexible 2D silver nanowire arrays, including the evaluation of the elastic modulus, ultimate strength, and ultimate fracturing behavior (toughness) for a wide range of silver nanowire contents.…”