International Business Machines Corporation

Wd Media, LLC

Jiaxing Liu

Isaac Lauer

Renee Tong Mo

Josephine B Chang

Theodore Gerard Van Kessel

Hendrik F Hamann

Supratik Guha

Talia S Gershon

Antony Ajan

Tomoko Seki

Rui Zhang

Low power combustible gas sensors using a thermocouple design are provided. In one aspect, a combustible gas sensor includes: at least one first electrode; at least one second electrode formed from a dissimilar material from the first electrode; and a catalytic material at an active reaction junction between the first electrode and the second electrode, wherein the active reaction junction between the first electrode and the second electrode forms a thermocouple. A sensing device is including, e.g., multiple sensors, and a method for sensing combustible gas using the present sensors are also provided.

Low power combustible gas sensing

A method of forming a strained channel for a field effect transistor, including forming a sacrificial layer on a substrate, forming a channel layer on the sacrificial layer, forming a stressor layer on the channel layer, wherein the stressor layer applies a stress to the channel layer, forming at least one etching trench by removing at least a portion of the stressor layer, channel layer, and sacrificial layer, wherein the etching trench exposes at least a portion of a sidewall of the sacrificial layer, and separates the stressor layer, channel layer, and sacrificial layer into two or more stressor islands, channel blocks, and sacrificial slabs, and removing the sacrificial slabs to release the channel blocks from the substrate using a selective etch, wherein the channel blocks adhere to the substrate surface.

Fabrication of a strained region on a substrate

Systems, devices, and methods are provided for detecting and measuring the concentration of non-reactive gases in a given environment, without having to increase the reactivity of the non-reactive gases through thermal heating. For example, a gas sensor device includes a sensing chamber, a chemical getter element disposed in the sensing chamber, and a pressure sensor device. The sensing chamber is configured to capture a gas sample. The chemical getter element is configured to remove reactive gas species of the gas sample through chemical reaction of the reactive gas species with the chemical getter element at room temperature. The pressure sensor device is configured to measure a pressure of non-reactive gas species of the gas sample, which remains in the sensing chamber after removal of the reactive gas species from the sensing chamber. The pressure measurement is used to determine an amount of the non-reactive gas species present in the sample.

Low power sensor for non-reactive gases

A heat-assisted magnetic recording (HAMR) media stack is provided in which Iridium (Ir)-based materials may be utilized as a secondary underlayer instead of a Magnesium Oxide (MgO) underlayer utilized in conventional media stacks. Such Ir-based materials may include, e.g., pure Ir, Ir-based alloys, Ir-based compounds, as well as a granular Ir layer with segregants. The use of Ir or Ir-based materials as an underlayer provide advantages over the use of MgO as an underlayer. For example, DC sputtering can be utilized to deposit the layers of the media stack, where the deposition rate of Ir is considerably higher than that of MgO resulting in higher manufacturing production yields. Further still, less particles are generated during Ir-based layer deposition processes, and Ir-based underlayer can act as a better heat sink. Further still, the morphology and structure of a recording layer deposited on an Ir-based layer can be better controlled.

Iridium underlayer for heat assisted magnetic recording media

Growing community of inventors

New York, NY, United States of America

Jiaxing Liu