Uric acid is more than a chemical associated with gout. It can provide information about metabolic activity, kidney function and broader physiological changes. Persistently elevated concentrations are linked to hyperuricaemia, gout, cardiovascular disease and chronic kidney disease. In wound exudate, the fluid released by damaged tissue during healing, changing uric acid levels could also reveal information about inflammation, tissue repair and the effectiveness of treatment. Conventional testing, however, generally requires a sample to be collected and sent to a laboratory, offering only a snapshot rather than a continuous record.

In their review, published in the journal Wearable Electronics, the researchers systematically examine the main strategies used to detect uric acid in wearable devices. Electrochemical sensing currently dominates the field because it can combine high sensitivity with compact hardware, low power consumption and straightforward integration into flexible electronics. These sensors measure changes in electrical signals produced when uric acid participates in a chemical reaction at the sensor surface. By analysing current, voltage or impedance, the device can estimate the concentration of uric acid in a small volume of biological fluid.

Many electrochemical systems use enzyme-based recognition, particularly uricase, an enzyme that catalyses the oxidation of uric acid. This reaction generates chemical products that can be converted into an electrical signal. Although enzyme-based sensors can be highly selective, their performance may be affected by temperature, acidity, enzyme stability and interfering molecules. To address these challenges, researchers are engineering electrode surfaces with advanced materials, including carbon nanomaterials, conductive polymers, metal nanoparticles and metal-organic frameworks. These materials can increase the active surface area, accelerate electron transfer and improve the ability to detect very small concentrations.

The review also highlights the importance of protecting the sensing interface from the complex chemistry of body fluids. Sweat, saliva, wound fluid and urine contain proteins, salts, metabolites and other compounds that can interfere with the target signal. Hydrogels, selective membranes and antifouling coatings are being used to control which molecules reach the electrode and to reduce the accumulation of biological material on its surface. Some devices combine uric acid sensing with temperature and pH measurements, allowing the system to compensate for environmental changes that might otherwise produce misleading readings.

Optical approaches offer another route to wearable uric acid detection. These systems can use changes in colour, fluorescence or light absorption to indicate the presence and concentration of uric acid. Optical sensors may be particularly useful when integrated into transparent or visually readable patches, although they must overcome challenges involving ambient light, optical alignment and the stability of dyes or nanomaterials. Other emerging approaches explored in the review include transistor-based platforms and multifunctional systems designed to analyse several biomarkers at the same time.

Wearable formats are expanding beyond conventional adhesive patches. Researchers have demonstrated concepts involving microneedles, smart textiles, watches, gloves, mouthguards and smart diapers. Microneedles can access interstitial fluid through the outer layers of the skin while causing minimal discomfort, whereas textiles may collect and analyse sweat during daily activity. Mouthguards can sample saliva, and smart diapers could potentially monitor urine without requiring a separate collection step. These formats are designed to place the sensor closer to the biological fluid of interest while maintaining flexibility and user comfort.

The researchers note that reliable long-term monitoring requires more than a sensitive chemical reaction. Wearable sensors must remain stable during movement, bending, stretching and repeated exposure to moisture. Built-in reference signals can help identify changes caused by sensor ageing, while calibration strategies may correct variations between individuals. Machine-learning algorithms could further improve interpretation by separating genuine physiological changes from noise caused by motion, temperature, pH or fluctuating fluid production. However, the review stresses that algorithmic correction cannot replace careful sensor design, standardised testing and clinical validation.

According to corresponding author Yue Hu, future uric acid monitoring could support earlier disease detection, provide more detailed information about wound healing and help clinicians deliver more timely and personalised care. The authors envision devices that are precise, comfortable, intelligent and suitable for prolonged use. Reaching that goal will require evidence from large clinical studies, agreement on testing standards, strong protection for sensitive health data and environmentally responsible manufacturing. If those challenges can be solved, the combination of advanced materials, flexible electronics and intelligent data analysis could make continuous uric acid monitoring a practical part of everyday healthcare rather than a technology confined to the laboratory.

Subject of Research: Wearable sensors and biosensing platforms for uric acid detection

Article Title: Recent advances in wearable sensors for uric acid detection: Methods, devices, and outlooks

Web References: https://doi.org/10.1016/j.wees.2026.04.002

References: Hu, Y., et al. “Recent advances in wearable sensors for uric acid detection: Methods, devices, and outlooks.” Wearable Electronics. DOI: 10.1016/j.wees.2026.04.002

Image Credits: Hu, Y., et al.

Keywords

Wearable biosensors, uric acid, gout, hyperuricaemia, kidney function, electrochemical sensors, optical sensors, flexible electronics, health monitoring, personalised healthcare

The core innovation hinges on the direct application of biocompatible two-dimensional nanosheet inks sprayed onto the human body. Upon deposition, these inks spontaneously organize into microscopically thin van der Waals films, forming electrically functionalized layers that conform exquisitely to the skin. Unlike conventional rigid or gel-based electrodes, these films are intrinsically stretchable and adapt mechanically to the body’s contours, including uneven, hairy, and moving surfaces. This conformality reduces contact impedance significantly, thereby enhancing signal fidelity and mitigating motion-induced artifacts which often compromise data integrity in existing systems.

This electrically functionalized skin interface effectively transforms the body surface into a highly sensitive platform capable of capturing robust bioelectrical signals. The research demonstrates that the coatings maintain their structural and electrical integrity even during intense muscle contractions and routine movements. Data collected include nuanced bioimpedance modulations and biopotential variations correlated with deep-tissue activities beneath the skin, such as blood circulation, muscle engagement, and even cortical brain activity. Such capabilities have heretofore required invasive or cumbersome monitoring apparatuses, limiting the scope of continuous, real-world health assessments.

One of the standout features of this technology is the dramatic reduction in extrinsic motion artifacts. Conventional wearable electrodes struggle to maintain stable contact during bodily motion due to their rigidity or poor skin adherence, leading to noisy and unreliable recordings. The van der Waals thin films exhibit a degree of compliance and skin-like mechanical properties that preserve electrical connectivity with the epidermis. This mechanical congruence permits continuous monitoring without the need for adhesives or external supports, thus improving user comfort and expanding practical utility beyond controlled clinical environments.

The approach employs a scalable spray-coating process that can be deployed rapidly and non-invasively on diverse skin areas. This ease of application is critical because the human body surface is continuously changing due to mechanical deformation, sweating, and hair growth. The nanosheet inks’ biocompatibility ensures long-term safety and minimizes skin irritation—a notorious drawback of many wearable biosensors. Moreover, the ultrathin nature of the films enables natural skin respiration and does not impede tactile sensation, making them effectively imperceptible to wearers.

In terms of signal acquisition, the electrically functionalized surface outperforms many existing commercial electrodes. Comparative studies reveal substantially lower contact impedances and enhanced sensitivity to subtle physiological signals originating from deep tissues. This enhancement allows clinicians and researchers to monitor dynamic biological phenomena in real time with high temporal resolution, such as blood flow dynamics relevant for cardiovascular health, muscle contraction patterns pertinent to rehabilitation, and even brain activity signals indicative of neural function and cognitive states.

The wide-ranging implications of this technology extend to both healthcare and fundamental biomedical research. Continuous, high-fidelity monitoring of deep-tissue physiology could revolutionize the management of chronic diseases by providing real-time data on internal organ function and musculoskeletal health. Additionally, its non-invasive nature combined with robustness to motion artefacts opens novel avenues for at-home diagnostics, telemedicine, and personalized medicine, enabling patients to receive accurate health feedback outside hospital settings and thus reducing healthcare burdens.

Furthermore, the technology may play a transformative role in neuroscience. Electrical recordings of brain activity are traditionally limited by skull barriers and require invasive setups or cumbersome helmets. The capability to detect brain-related electrical signals from the skin surface, enhanced by the electrically functionalized films, could markedly improve non-invasive brain-computer interface development. This, in turn, paves the way for new therapies, neuroprosthetics, and cognitive monitoring tools, all integrated seamlessly into everyday life without discomfort or stigma.

The versatility of the nanosheets also hints toward integration with other bioelectronic systems. Coupled with wireless transmission modules and embedded data analytics, these films could constitute a cornerstone of future wearable health technologies, fusing advanced materials science with artificial intelligence for smart, adaptive monitoring platforms. Their chemical and mechanical robustness ensure long operational lifetimes without degradation, tackling a key hurdle faced by many bioelectronic devices vulnerable to environmental exposure.

Crucially, the researchers emphasize the scalability and cost-effectiveness of this approach. Spray-coating methods are already widespread in industrial settings, which means the path toward commercialization and widespread adoption may be direct and economically viable. As the global demand for next-generation, non-invasive healthcare solutions continues to grow, electrically functionalized body surfaces offer a compelling example of material innovation meeting urgent clinical needs.

Besides technological achievements, this research underscores the importance of intimate collaboration between materials science, engineering, and biomedical disciplines. By designing nanosheet inks that interact gently yet effectively with the dynamic, textured human skin, the team surmounted fundamental interface challenges. Their work redefines what is possible in wearable bioelectronics and establishes a platform on which future innovations in personalized health monitoring can be constructed.

Looking ahead, ongoing studies seek to refine and expand the scope of this invention, including exploring multi-modal sensing capabilities that might simultaneously track electrical, chemical, and biomechanical signals from the body surface. Such integration could afford comprehensive physiological profiling in a single, wearable film, dramatically enriching the data set available for health diagnostics, athletic performance optimization, and early disease detection.

In summary, the electrically functionalized body surface developed through spray-coating biocompatible nanosheet inks presents a groundbreaking modality for deep-tissue bioelectrical recording. By overcoming the limitations of traditional electrodes, this technology offers a highly conformal, stretchable, and mechanically adaptive interface that enables precise, stable, and continuous monitoring of vital physiological signals. Its ability to suppress motion artifacts, reduce contact impedance, and conform to complex skin geometries heralds a new era in non-invasive biomedical monitoring with profound clinical and commercial implications.

As these electrically functionalized films begin to permeate clinical and consumer health systems, they promise to significantly improve patient outcomes by facilitating more accurate diagnostics, earlier intervention, and enhanced quality of life. Their inherent compatibility with routine body motions ensures that health insights become seamlessly embedded into daily life rather than confined to laboratory settings. This research elegantly illustrates the power of nanoscale materials engineering in unlocking the full potential of human health monitoring through the simplest interface—the skin.

Subject of Research: Electrically functionalized body surface for deep-tissue bioelectrical recording

Article Title: Electrically functionalized body surface for deep-tissue bioelectrical recording

Article References:
Zhang, D., Zhao, G., Zhang, Y. et al. Electrically functionalized body surface for deep-tissue bioelectrical recording. Nat. Biomed. Eng (2026). https://doi.org/10.1038/s41551-026-01663-1

Image Credits: AI Generated

DOI: https://doi.org/10.1038/s41551-026-01663-1

Emerging research, recently detailed in the International Journal of Extreme Manufacturing, reveals a paradigm shift from rigid architectures toward soft, brain-inspired electronics capable of sensing, storing, and processing information while mechanically conforming to dynamic biological environments. This new generation of devices leverages intrinsically soft materials, such as malleable polymers and ionogels, to retain complex computing capabilities even under significant mechanical strain. By integrating these flexible substrates, neuromorphic electronics achieve functionality that was previously impossible with silicon-based platforms, opening avenues for seamless human-machine integration.

Central to these advancements is the innovative mechanism of organic mixed ionic-electronic conduction. Unlike traditional processors that transmit electrons through stiff metal pathways, these soft devices emulate the human brain’s chemical signaling by dynamically managing the dual flow of ions and electrons. Structurally analogous to microscopic sponges, their active components absorb and release ions from their environment, continuously rewiring neural-like circuits. This process underpins the devices’ ability to replicate synaptic plasticity—the dynamic strengthening and weakening of biological synapses—thereby enabling learning and memory functions at the hardware level.

Material breakthroughs have propelled these devices to extraordinary mechanical resilience, boasting stretchability up to 140% of their original length, an elasticity surpassing that of human skin. Such pliability enables stable operation around highly mobile joints like elbows and knees without compromising device integrity. The implications for wearable technology are profound, as electronics can now intimately conform to the body’s complex contours and movements without causing discomfort or failure.

Beyond mechanical adaptability, these neuromorphic devices operate at ultra-low voltages, typically below half a volt. This extreme energy efficiency not only reduces power consumption but also minimizes thermal emissions, ensuring that the devices remain safe for continuous contact with organs and skin. Remarkably, their power requirements are significantly lower than a standard AA battery, facilitating long-term use without the risk of overheating or electrical hazards—a crucial criterion for implantable and wearable health technologies.

The shift from rigid to soft neuromorphic systems dramatically transforms manufacturing paradigms. Traditional fabrication involves assembling rigid sensors onto flexible substrates, a complex and often fragile process. In contrast, the monolithic printing of soft computing networks fuses sensing, memory, and processing into a unified elastomeric fabric. This manufacturing evolution simplifies production, enhances durability, and leads to versatile applications such as highly responsive electronic skins and soft robotic limbs that detect and interpret tactile and motion inputs locally, eliminating the need for bulky external processors.

Despite such promising strides, key engineering challenges remain. One major limitation is the rapid fading of information stored in current soft memory components after stimulation ceases, rendering them unsuitable for long-term data retention. This volatility restricts their immediate clinical utility, especially where persistent memory is critical, such as continuous monitoring or therapeutic interventions.

To circumvent this obstacle, research is gravitating toward island-bridge architectures. Here, permanent memory modules reside on rigid microscopic “islands” shielded from mechanical strain, connected by stretchable, coiled wiring that accommodates body movement. This hybrid topology marries the stability of rigid memory with the flexibility of soft interconnects, balancing durability and functionality in human-integrated devices.

Material considerations further guide this development trajectory, emphasizing chemically stable, biocompatible, and non-toxic components to ensure wearer safety and device longevity. Such careful material selection aids in transitioning these stretchable neuromorphic chips from controlled laboratory experiments to reliable, everyday human applications.

Looking forward, the convergence of materials science, neuromorphic engineering, and manufacturing innovations promises to fundamentally reshape how intelligent devices interface with the human body. These stretchable neuromorphic systems herald a future where computing is not only high-performance but intrinsically adaptable, biofriendly, and seamlessly embedded into the fabric of daily life.

As this research continues to mature, it will likely accelerate advances in personalized health diagnostics, rehabilitation technologies, and even augmented human capabilities. By overcoming the physical limitations that once constrained wearable AI, these devices pave the way for unprecedented integration of machine intelligence with the organic rhythms of human biology, potentially transforming medicine, robotics, and beyond.

Subject of Research: Stretchable neuromorphic electronics integrating soft, brain-inspired materials for human-compatible intelligent systems.

Article Title: Stretchable neuromorphic electronics for future human-integrated intelligence

News Publication Date: 23-Mar-2026

Web References:
International Journal of Extreme Manufacturing
DOI: 10.1088/2631-7990/ae5004

Image Credits: By Tianda Fu§,*, Ruizhe Yang§, Max Weires, Junyi Yin, Yifan Liao and Yifan Guo

Keywords

Neuromorphic electronics, stretchable computing, organic mixed ionic-electronic conduction, soft materials, wearable AI, bioelectronic skins, synaptic plasticity, flexible substrates, low-voltage operation, island-bridge architecture, biocompatible devices, human-integrated intelligence

This revolutionary device diverges from traditional methods, which typically rely on cumbersome cuff-based blood pressure monitors that inflate to exert pressure on the arm. Instead, this state-of-the-art solution employs a compact and flexible electronic patch. The unique design has not only garnered significant interest but represents a substantial step forward in making blood pressure monitoring more accessible and less intrusive.

The urgency surrounding effective blood pressure management cannot be overstated. Out of approximately 1.3 billion individuals suffering from hypertension worldwide, a staggering 79% struggle with adequate management of their condition. The limitations of conventional cuff-based devices are manifold; they only provide one-time measurements, which poses challenges for continuous monitoring. Furthermore, the discomfort associated with the cuffs often discourages patients from using these devices consistently, thus diminishing their effectiveness. This heightened need underscores the importance of a solution like the one developed by this research team.

The primary breakthrough of the new wearable device stems from the analysis of the time delay between two types of signals generated by the heart: electrical signals captured via electrocardiograms (ECGs) and the mechanical signals of the pulse. This time difference is cleverly correlated with blood pressure levels. When blood pressure is elevated, the speed of blood flow increases, thereby shortening the time gap between the two signals. In contrast, a drop in blood pressure results in a longer time interval between these signals. By brilliantly leveraging this physiological principle, the research team has developed a model that accurately tracks both systolic and diastolic blood pressure through precise detection of these signals with every heartbeat.

Detecting subtle shifts in skin movement as blood flows can be exceptionally challenging. Recognizing this, the researchers designed the device to naturally adhere to the skin using a newly engineered substance known as liquid metal. This material remains pliable at room temperature and exhibits excellent conductivity, making it an ideal choice for the electronic circuitry required in this groundbreaking device.

However, working with liquid metal presents its own set of challenges. The material is plagued by exceptionally high surface tension, complicating the process of forming precise circuits. To overcome this limitation, the research team implemented a technique dubbed “laser sintering.” Through this innovative method, finely dispersed liquid metal particles are selectively heated with a laser, allowing them to fuse precisely where needed. This approach not only streamlines the creation of circuit patterns but also retains the necessary flexibility of the device.

In testing the device, the researchers demonstrated remarkable mechanical and electrical performance. The electronic patch maintained its efficacy even when stretched to 700% of its original size or when subjected to over 10,000 cycles of repeated stretching. Furthermore, the device displayed its ability to detect rapid fluctuations in blood pressure surrounding physical exertion, offering superior monitoring capabilities compared to existing cuff methods.

The implications of this technology are vast. By simply attaching the device to the wrist, real-time monitoring of blood pressure becomes feasible, freeing patients from the inconvenience of periodic hospital visits or the static nature of traditional blood pressure measurements. For individuals managing chronic conditions like hypertension, the device promises to deliver vital, continuous insights into their health status anytime and anywhere.

Moreover, the device’s capability to monitor blood pressure fluctuations during exercise opens up exciting possibilities for tailored fitness programs and personalized therapy prescriptions. The technology also holds promise for integration into an array of wearable devices, such as smartwatches and advanced medical patches. Ultimately, this innovation is expected to be instrumental in heralding a new era of healthcare, one where proactive disease prevention and health management seamlessly integrate into daily life.

According to Professor Seung Hwan Ko, the research epitomizes a paradigm shift in blood pressure measurement, challenging the long-held notion that such evaluations are both inconvenient and limited to occasional checks. He envisions this system as a new interface for healthcare that can noninvasively capture and analyze physiological signals in real time, reshaping the standard patient experience.

The co-first authors of the study, Jung Jae Park and Sangwoo Hong, are already setting their sights on future research endeavors, aiming to enhance the technology’s practicality and expand its integration potential. The team intends to explore adding various substrate materials and incorporating wireless communication capabilities alongside AI-driven data analysis.

This latest advancement from Seoul National University holds great promise, not just in terms of improving individual health outcomes, but also for its potential applications in intensive care monitoring, workplace health, and lifestyle analytics. As the world increasingly embraces personalized healthcare solutions, this wearable device stands out as a beacon of innovation that might soon define the way we approach blood pressure management and overall health monitoring.

Subject of Research: Blood pressure monitoring technology
Article Title: Highly Sensitive Cuffless Blood Pressure Monitoring with Selective Laser-Sintered Liquid Metal Conductors
News Publication Date: Date pending publication
Web References: [Link to article, if applicable]
References: [Citations for study, if applicable]
Image Credits: © Advanced Functional Materials

Keywords

wearable technology, blood pressure monitoring, hypertension, liquid metal, health innovation, continuous monitoring, electrocardiogram, smart healthcare, laser sintering, biomedical engineering, personalized health management.