In this letter, we demonstrate the importance of the fabricated device structure for the external differential efficiency, threshold current density, and maximum operating temperature for ground state operation of a 1.31m quantum dot laser. The introduction of a shallow ridge etch design and selective electroplating of the gold bondpads is demonstrated to offer improved performance in compariso...

A plastic, 95-GHz rectangular waveguide with an integrated plastic flange has been successfully demonstrated using micro hot embossing and electroplating technologies. Two prototype devices with integrated flanges on both ends have been tested using an Agilent PNA 5250 network analyzer. The prototype with non-metallized flange shows return loss s11 and insertion loss s21 values of −21.5 and −1....

 Miniature coils for use in magnetic resonance spectroscopy have been constructed in a rectangular Helmholtz arrangement based on a pair of substrates separated by spherical alignment spacers. An optimal geometry has been developed using simple theory and verified by numerical analysis. Prototype devices have been fabricated using silicon substrates shaped by anisotropic etching to form a samp...

Copper electroplated profiles exhibit pattern dependent topography. We propose a methodology for the characterization and modeling of feature scale copper step heights and the height of copper array regions, as a function of layout parameters. The resulting empirical models with parameters extracted from conventional and super fill plating processes capture several key trends important in elect...

This paper introduces machining of optics, presenting some of the history of machining progress, critical machining variables, material and geometrical capabilities, and some new results on optical evaluation of machined surfaces. A most significant development is electroplating of materials that are otherwise not presently machinable. For example, molybdenum has been electroplated with silver ...

Corten steel is a low-carbon alloy steel. It widely used in architecture, the transport sector, and industrial applications, where exposed to harsh environments. very much sought after due its auto protection from corrosive environments through formation of patina (rust). The specialty formed on corten that it can self-heal itself stop spreading corrosion. Generally, steels are given protective...

Correction for ‘The role of an elastic interphase in suppressing gas evolution and promoting uniform electroplating sodium metal anodes’ by Chen Gong et al. , Energy Environ. Sci. 2023, 16 535–545, https://doi.org/10.1039/D2EE02606F.

crown ethers 12-crown-4 (12c4), benzo-15-crown-5 (b15c5), 18-crown-6 (18c6), nitrobenzo-18-crown-6 (nb18c6) dibenzo-18-crown-6 (db18c6) and dicyclohexyl-18-crown-6 (dc18c6), dissolved in dichloromethane, are able to form oxonium-ion complexes in contact with aqueous sulfuric and hydrochloric acid solutions. this ability allows the transfer of cr(vi) oxanions from the acid media, through an orga...