High-throughput realization of an infrared selective absorber/emitter by DUV microsphere projection lithography.

Atmospheric-Window-Matching Hierarchical Broadband Infrared Absorber Realized by Lithography-Free Fabrication

An ultra-broadband selective absorber has been realized with a hierarchical structure through integrating vacuum impedance-matched structure, quarter wavelength structure, and gradient refractive index structure. Through optimizing the design parameters of the proposed hierarchical structure, an ultra-broadband infrared absorber covering the three major atmospheric windows (0.7–2.5, 3–5, and 8–...

Unidirectional radiative heat transfer with a spectrally selective planar absorber/emitter for high-efficiency solar thermophotovoltaic systems

Hexagonal boron nitride for deep ultraviolet photonic devices

This paper provides a brief overview on recent advances in tackling the doping and optical polarization issues involved in the development of high performance deep ultraviolet (DUV) light emitting devices. In particular, recent developments in the exploitation of a novel DUV emitter layer structure based on a hexagonal boron nitride (hBN) and AlGaN p–n junction and doping engineering to potenti...

Laser desorption ionization (LDI) silicon nanopost array chips fabricated using deep UV projection lithography and deep reactive ion etching

Deep UV projection lithography (DUV-PL) and deep reactive ion etching (DRIE) processes are used to fabricate silicon nanopost surfaces for laser desorption ionization mass spectrometry (LDI-MS). Described here is a fabrication process that is amenable to mass production of silicon nanopost array (NAPA) devices optimized for laser desorption ionization mass spectrometry of small molecules less t...

Hybrid optical antenna with high directivity gain.

Coupling of a far-field optical mode to electronic states of a quantum absorber or emitter is a crucial process in many applications, including infrared sensors, single molecule spectroscopy, and quantum metrology. In particular, achieving high quantum efficiency for a system with a deep subwavelength quantum absorber/emitter has remained desirable. In this Letter, a hybrid optical antenna base...