Stmicroelectronics Asia Pacific Pte Limited

Nxp B.v.

Archit Giridhar

Teck Khim Neo

Fabrice Verjus

A resistive microelectronic fluid sensor implemented as an integrated voltage divider circuit can sense the presence of a fluid within a fluid reservoir, identify the fluid, and monitor fluid temperature or volume. Such a sensor has biomedical, industrial, and consumer product applications. After fluid detection, the fluid can be expelled from the reservoir and replenished with a fresh supply of fluid. A depression at the bottom of the sample reservoir allows a residual fluid to remain undetected so as not to skew the measurements. Electrodes can sense variations in the resistivity of the fluid, indicating a change in the fluid chemical composition, volume, or temperature. Such fluctuations that can be electrically sensed by the voltage divider circuit can be used as a thermal actuator to trigger ejection of all or part of the fluid sample.

Microelectronic fluid detector

A microfluidic device may include a substrate having a cavity therein, and a bendable membrane within the cavity and having a plurality of spaced apart valve passageways therein. The bendable membrane may be bendable between a first position with the valve passageways being opened, and a second position with the valve passageways being closed. The microfluidic device may further include an actuator configured to bend the bendable membrane between the first and second positions.

Microfluidic device with bendable membrane having valve passageways to provide enhanced fluidic mobility control and related methods

A testing device uses a selectively deformable substrate to capture and retain spherical beads for genetic experimentation. A method of fabricating the device is described in which a silicon substrate can be coated with a photosensitive, bio-compatible polymer for photolithographic patterning using a single mask exposure. The polymer is patterned with a matrix of wells, each well capable of expansion to accept placement of a bead in the well, and contraction to secure the bead in the well. The polymer can exhibit piezoelectric properties that cause it to respond mechanically to a selected electrical excitation.

Deformable polymer testing device

A MEMS multiaxial inertial sensor of angular and linear displacements, velocities, or accelerations has four comb drive capacitive sensing elements integrated on a planar substrate, each sensing element having an output responsive to displacement along a Z axis, and responsive to a displacement along X or Y axes. The sensing elements are located at different parts of the substrate on both sides of the X axis and the Y axis, the outputs being suitable for subsequently deriving linear and angular displacements about any of the X, Y or Z axes. Linear or angular movement is determined from combinations of the sensor signals.

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Singapore, Singapore

Archit Giridhar