Browsing Category: Sensors

Pacifier sensor detects glucose levels in babies

UCSD’s Joe Wang has developed a soft, flexible, pacifier-based biosensor that continuously monitors glucose levels in saliva to detect diabetes in babies. Until now,  continuous glucose monitoring in newborns,  available only in major hospitals, requires piercing the infant’s skin to reach interstitial fluid. The team created a proof of concept pacifier where small amounts of saliva […]

Wearable sensor monitors antibiotic levels in real time

Imperial College’s Timothy Rawson has developed a non-invasive microneedle bionsor patch capable of detecting antibiotic levels in the body. The goal is to reduce the need for blood sampling and analysis, optimize dosage, reduce drug-resistant infections and offer personalized drug delivery, both inside and outside of the hospital. A recent study showed that the accuracy of the real-time […]

Biodegradable optical sensor monitors physiological function, can provide electrical stimulation, in brain and heart surgery

Northwestern’s John Rogers has developed a biodegradable optical sensor that can be implanted after brain injury and not require a second surgery for removal.  According to Rogers: “Optical characterization of tissue can yield quantitative information on blood oxygenation levels. Fluorescence signals can reveal the presence of bacteria as a diagnostic for the formation of an […]

Printed stickers, stretchable antennas, fluctuation-resistant RFID for continuous whole-body monitoring

Zhenan Bao‘s adhesive, unobtrusive wearables continue to change the way health is monitored.  Her new BodyNet system tracks pulse, respiration, and other physiological signs using small, screen printed stickers around the body, and a wireless receiver clipped to clothing. The research was published in Nature Electronics last week. Her  goal is to “create an array […]

Tiny fiber optic sensor monitors blood flow in real-time

John Arkwright and Flinders University colleagues have developed a tiny, low cost, fiber-optic sensor to monitor blood flow through the aorta in real-time.  The goal is continuous monitoring during prolonged intensive care and surgical procedures.  Current blood flow measurement, using ultrasound or thermo-dilution,  is intermittent, averaging every 30 minutes. The device is inserted through a […]

Sensor glove identifies objects

MIT’s Subramanian Sundaram has developed a sensor glove that identifies objects through touch.  This could improve assistive robot performance and enhance prosthetic design.The cheap “scalable tactile glove” includes 550 tiny, pressure-capturing sensors.  A neural network uses the data to classify objects and predict their weights.  No visual input is required. In a Nature paper, the system […]

Photonics for at-home disease detection

Hatice Altug and EPFL BIOS Laboratory colleagues are developing photonic chips that count individual biomolecules and determine their location.  This could identify trace amounts of undesirable biomarkers in blood or saliva and serve as an early-warning system for disease. The technology consists of an ultra-thin and miniaturized optical chip that,  coupled with a standard CMOS camera […]

Glutamate sensor could predict migraines, monitor CNS drug effectiveness

Riyi Shi and Purdue colleagues have developed a tiny, spinal cord-implanted, 3D printed sensor that quickly and accurately tracks glutamate in spinal trauma and brain disease. The goal  is to monitor drug effectiveness, and predict migraine headaches in humans, although it has only been tested on animals. Glutamate spikes are often missed.  Damaged nerve structures allow glutamate […]

Wireless, skin-like sensors monitor baby heart rate, respiration, temperature, blood pressure

John Rogers and Northwestern colleagues have developed soft, flexible, battery-free, wireless, skin-like sensors to replace multi wire-based sensors that currently monitor babies in hospitals’ neonatal intensive care units.  The goal is to enable more accurate monitoring, and unobstructed physical bonding. The dual wireless sensors monitor heart rate, respiration rate and body temperature — from opposite […]