System Integration of an Optimally Designed Virtual Impactor with a QCM Sensor as a One-Stop PM Classification and Detection Platform.

Excessive exposure to airborne particulate matter (PM), especially PM particles, adversely affects human health. Conventional PM detection instruments based on light scattering are generally bulky, expensive, and easily affected by particle size and composition. Here, we report a low-cost and compact one-stop PM detection platform by integrating a three-dimensional (3D) printed virtual impactor with a QCM sensor.

A Study on AIN Film-Based SAW Attenuation in Liquids and Their Potential as Liquid Ethanol Sensors.

In this paper, we report attenuation characteristics of aluminum nitride (AIN) film-based surface acoustic waves (SAWs) in liquids and their potential as liquid ethanol sensors. An AIN film-based SAW resonator was fabricated for liquid sensing application. The fabricated SAW device had a Rayleigh wave mode at a resonant frequency of 147.

Particulate matter, sulfur dioxide, and daily mortality in Chongqing, China.

In 1995, daily mortality in a district of Chongqing, China, was analyzed from January through December for associations with daily ambient sulfur dioxide and fine particles (airborne particles with diameters less than or equal to 2.5 microm; PM2.5.