We developed a fingertip-size proximity sensor that detects the distance to and the tilt angle
of the surface of an object with the peak-to-peak distance error less than 1/129th (<; 31 μm) …

A lock-in amplifier (LIA) is an instrument that can extract weak signals from extremely noisy
environments, and it is widely used in various precision measurement fields. However, there …

A system for active co-boresight measurement includes a detector, first and second steering
mirrors, and a controller. The detector detects a portion of a transmission beam emitted by a …

A compact system for active co-boresight measurement includes a detector, a steering
mirror, and a controller. The detector detects a portion of a transmission beam emitted by a …

The terahertz (THz) spectrum (0.1–10 THz) is located between the infrared and microwave
regimes, known as the THz gap. During the last decade, THz wave generation, detection …

Photoacoustic (PA) imaging is a promising technology for functional imaging of biological
tissues, offering optical contrast and acoustic penetration depth. However, the presence of …

This paper presents the design and implementation of a Heart Rate Monitor (HRM) based
on photoplethysmography (PPG). This optical method is noninvasive and provides a …

This works describes the development of a low computational cost software capable of
applying the signal correlation technique which is used by lock-in amplifiers, applying this …

Electrochemical impedance spectroscopy (EIS) can provide information about the internal
state of fuel cells, which makes EIS an important tool for fuel cell fault diagnosis. However …

A platform has been developed to study intercellular communication in non-neural cells as it
relates to developmental biology and morphogenetic bioengineering. The versatile platform …