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Category: wearables

Researchers take major step toward cuff-free blood pressure monitoring

Researchers have shown, for the first time, that speckle contrast optical spectroscopy (SCOS) can be used for cuffless blood pressure monitoring. The new technology could improve early detection and management of hypertension.

“Hypertension affects nearly half of all adults in the US and is the leading cause of cardiovascular disease,” said Ariane Garrett, a doctoral student in Darren Roblyer’s lab at Boston University. “This research is a step toward a that would let people monitor their any time, without a cuff.”

SCOS is a noninvasive imaging technique that measures by analyzing speckle patterns formed by coherent light scattering from cells and tissue. While it has been used for other applications such as brain and tissue monitoring, this is one of the first studies to explore how SCOS signals relate to blood pressure.

Wearable X-ray-detecting fabric offers a flexible alternative to current imaging tech

Since their discovery by Wilhelm Roentgen in 1895, X-rays have become a staple of modern medical care, from imaging teeth and broken bones to screening for the early signs of breast cancer.

The most common type of X-ray detector used in medical imaging today utilizes materials known as scintillators, which are made of inorganic and rigid compounds. This inherent lack of flexibility limits their applications and often requires patients to contort their bodies to accommodate unyielding medical equipment.

This rigidity has created a demand among researchers and the for scintillating materials that are robust, efficient, and flexible. Past attempts to meet this demand, however, have had to sacrifice durability and efficiency for flexibility. An innovative fabric made of flexible inorganic fibers shows remarkable promise and may meet all three requirements.

A machine-learning–powered spectral-dominant multimodal soft wearable system for long-term and early-stage diagnosis of plant stresses

MapS-Wear, a soft plant wearable, enables precise, in situ, and early-stage stress diagnosis to boost crop yield and quality.

Highly Scalable, Wearable Surface‐Enhanced Raman Spectroscopy

The last two decades have witnessed a dramatic growth of wearable sensor technology, mainly represented by flexible, stretchable, on-skin electronic sensors that provide rich information of the wearer’s health conditions and surroundings. A recent breakthrough in the field is the development of wearable chemical sensors based on surface-enhanced Raman spectroscopy (SERS) that can detect molecular fingerprints universally, sensitively, and noninvasively. However, while their sensing properties are excellent, these sensors are not scalable for widespread use beyond small-scale human health monitoring due to their cumbersome fabrication process and limited multifunctional sensing capabilities. Here, a highly scalable, wearable SERS sensor is demonstrated based on an easy-to-fabricate, low-cost, ultrathin, flexible, stretchable, adhesive, and biointegratable gold nanomesh. It can be fabricated in any shape and worn on virtually any surface for label-free, large-scale, in situ sensing of diverse analytes from low to high concentrations (10–106 × 10−9 m). To show the practical utility of the wearable SERS sensor, the sensor is tested for the detection of sweat biomarkers, drugs of abuse, and microplastics. This wearable SERS sensor represents a significant step toward the generalizability and practicality of wearable sensing technology.

Implantable bioelectronics and wearable sensors for kidney health and disease

Advances in biosensor technology have the potential to enable continuous, non-invasive monitoring of kidney health through wearable and implantable systems. Non-invasive microfluidic systems have demonstrated utility in the detection of kidney-relevant biomarkers in peripheral body fluids such as sweat, interstitial fluid, tears and saliva, whereas implantable systems permit the direct measurement of biophysical tissue properties including tissue oxygenation, perfusion and temperature.

High-performance memory devices can dissolve in water to address e-waste problem

The use of electronics in various forms is on the rise, from wearable devices like smartwatches to implantable devices like body-implanted sensors, skin-worn smart patches, and disposable monitoring devices. These devices, which are inevitably discarded after use, contribute to the growing problem of electronic waste (e-waste), a significant environmental concern.

The Korea Institute of Science and Technology (KIST) has announced that a joint research team, led by Dr. Sangho Cho of the Center for Extreme Materials Research and Dr. Yongho Joo of the Center for Functional Composite Materials Research, has developed a that offers high-performance data storage while completely degrading within days when immersed in water. The research is published in the journal Angewandte Chemie International Edition.

The material is biocompatible and stable enough for implantation in the human body, and the onset of degradation can be controlled by adjusting the thickness and the composition of the protective layer. Once this protective layer dissolves, the material degrades naturally in water within approximately three days, without leaving any residue.

Nanometer thin spacer boosts blue OLEDs portability and efficiency

Organic light-emitting diodes (OLEDs) have transformed display and lighting technology with their vivid colors, deep contrast, and energy efficiency. As demand grows for lighter, thinner, and more energy-saving devices—especially in wearables, foldables, and portable electronics—there’s increasing interest in OLEDs that can operate at lower voltages without compromising performance.

“Robots Can Feel Now”: New Color-Changing Skins Let Machines React Instantly Without Wires, Screens, or Human Input

IN A NUTSHELL 🐙 Researchers at the University of Nebraska–Lincoln have developed synthetic skins that mimic the color-changing abilities of marine creatures. ⚙️ These innovative skins utilize autonomous materials that respond to environmental stimuli without the need for traditional electronics. 📱 Potential applications include wearable devices and soft robotics, offering flexibility and adaptability in various

Glass nanostructures reflect nearly all visible light, challenging photonics assumptions

A research team led by SUTD has created nanoscale glass structures with near-perfect reflectance, overturning long-held assumptions about what low-index materials can do in photonics.

For decades, glass has been a reliable workhorse of optical systems, valued for its transparency and stability. But when it comes to manipulating light at the nanoscale, especially for high-performance optical devices, glass has traditionally taken a backseat to higher refractive index materials. Now, a research team led by Professor Joel Yang from the Singapore University of Technology and Design (SUTD) is reshaping this narrative.

With findings published in Science Advances, the team has developed a new method to 3D-print glass structures with nanoscale precision and achieve nearly 100% reflectance in the . This level of performance is rare for low-refractive-index materials like silica, and it opens up a broader role for glass in nanophotonics, including in wearable optics, integrated displays, and sensors.

New Material Breaks the Rules: Scientists Turn Insulator Into a Semiconductor

Once considered merely insulating, a change in the angle between silicon and oxygen atoms opens a pathway for electrical charge to flow.

A breakthrough discovery from the University of Michigan has revealed that a new form of silicone can act as a semiconductor. This finding challenges the long-held belief that silicones are only insulating materials.

“The material opens up the opportunity for new types of flat panel displays, flexible photovoltaics, wearable sensors or even clothing that can display different patterns or images,” said Richard Laine, U-M professor of materials science and engineering and macromolecular science and engineering and corresponding author of the study recently published in Macromolecular Rapid Communications.