Needle pricks not your thing? A team of scientists at the University of California, Berkeley, is developing wearable skin sensors that can detect what’s in your sweat.
They hope that one day, monitoring perspiration could bypass the need for more invasive procedures like blood draws, and provide real-time updates on health problems such as dehydration or fatigue.
In a paper appearing today (Friday, August 16) in Science Advances, the team describes a new sensor design that can be rapidly manufactured using a “roll-to-roll” processing technique that essentially prints the sensors onto a sheet of plastic like words on a newspaper.
They used the sensors to monitor the sweat rate, and the electrolytes and metabolites in sweat, from volunteers who were exercising, and others who were experiencing chemically induced perspiration.
“The goal of the project is not just to make the sensors but start to do many subject studies and see what sweat tells us — I always say ‘decoding’ sweat composition,” said Ali Javey, a professor of electrical engineering and computer science at UC Berkeley and senior author on the paper.
“For that we need sensors that are reliable, reproducible, and that we can fabricate to scale so that we can put multiple sensors in different spots of the body and put them on many subjects,” said Javey, who also serves as a faculty scientist at Lawrence Berkeley National Laboratory.
The new sensors contain a spiraling microscopic tube, or microfluidic, that wicks sweat from the skin. By tracking how fast the sweat moves through the microfluidic, the sensors can report how much a person is sweating, or their sweat rate.
The microfluidics are also outfitted with chemical sensors that can detect concentrations of electrolytes like potassium and sodium, and metabolites like glucose.
Javey and his team worked with researchers at the VTT Technical Research Center of Finland to develop a way to quickly manufacture the sensor patches in a roll-to-roll processing technique similar to screen printing.
“Roll-to-roll processing enables high-volume production of disposable patches at low cost,” Jussi Hiltunen of VTT said. “Academic groups gain significant benefit from roll-to-roll technology when the number of test devices is not limiting the research. Additionally, up-scaled fabrication demonstrates the potential to apply the sweat-sensing concept in practical applications.”
To better understand what sweat can say about the real-time health of the human body, the researchers first placed the sweat sensors on different spots on volunteers’ bodies — including the forehead, forearm, underarm and upper back — and measured their sweat rates and the sodium and potassium levels in their sweat while they rode on an exercise bike.
They found that local sweat rate could indicate the body’s overall liquid loss during exercise, meaning that tracking sweat rate might be a way to give athletes a heads up when they may be pushing themselves too hard.
“Traditionally what people have done is they would collect sweat from the body for a certain amount of time and then analyze it,” said Hnin Yin Yin Nyein, a graduate student in materials science and engineering at UC Berkeley and one of the lead authors on the paper. “So you couldn’t really see the dynamic changes very well with good resolution. Using these wearable devices we can now continuously collect data from different parts of the body, for example to understand how the local sweat loss can estimate whole-body fluid loss.”
They also used the sensors to compare sweat glucose levels and blood glucose levels in healthy and diabetic patients, finding that a single sweat glucose measurement cannot necessarily indicate a person’s blood glucose level.
“There’s been a lot of hope that non-invasive sweat tests could replace blood-based measurements for diagnosing and monitoring diabetes, but we’ve shown that there isn’t a simple, universal correlation between sweat and blood glucose levels,” said Mallika Bariya, a graduate student in materials science and engineering at UC Berkeley and the other lead author on the paper. “This is important for the community to know, so that going forward we focus on investigating individualized or multi-parameter correlations.”
Learn more: Wearable sensors detect what’s in your sweat
The Latest on: Wearable sensors
[google_news title=”” keyword=”wearable sensors” num_posts=”10″ blurb_length=”0″ show_thumb=”left”]
via Google News
The Latest on: Wearable sensors
- Wearable sensors ramp up longevity industryon January 27, 2023 at 6:03 pm
The truth is, a decade ago, a study on the economic impact of longevity was already conducted by Oxford Economics. They did a study for the American Association of Retired Persons (AARP) in the USA ...
- Smart Wearable Fitness Devices Sensors Market 2023-2027: What Opportunities Plays Vital Role in Growth, and Business Developmentson January 26, 2023 at 9:08 am
This Smart Wearable Fitness Devices Sensors Market report comprehends top growing opportunities and challenges with future trends analysis. It covers qualitative and quantitative assessment of ...
- Wearable technology: Integrating science and medicine into sports trainingon January 26, 2023 at 3:01 am
Athletes can wear sensors, watches, rings and patches to convey in-the-moment data and information about performance.
- How to use wearable tech if you’ve got tattooson January 25, 2023 at 3:16 pm
If you’ve got tattoos and are interested in trying out wearable tech, there are a few things to consider before reaching for your wallet. The bad news is that tattoos and wearables aren’t always ...
- Wearable sensor uses ultrasound to provide cardiac imaging on the goon January 25, 2023 at 8:00 am
Engineers and physicians have developed a wearable ultrasound device that can assess both the structure and function of the human heart. The portable device, which is roughly the size of a postage ...
- Wearable Health Solutions Inc. Files Trademark Application for iHelpGO To Be Used With a Future Product Offeringon January 25, 2023 at 5:14 am
NEWPORT BEACH CA / ACCESSWIRE / / Wearable Health Solutions Inc. (OTC:WHSI) ("Wearable Health Solutions" or the "Company"), today announced that "The company has filed a ...
- Wearable sensor can help unlock the potential of exosuits in real-world environmentson January 24, 2023 at 2:14 pm
The research team has met that challenge, employing a unique wearable sensor called a shear wave tensiometer. The simple, noninvasive device is easily mounted on the skin over a tendon. The ...
- Military Wearable Sensors Market : Competitive Strategy Analysis and Forecast Values 2023-2028on January 24, 2023 at 2:26 am
Military Wearable Sensors Market Size is projected to Reach Multimillion USD by 2029, In comparison to 2022, at ...
- Global Wearable Sensors Market | Growing at CAGR 38.05% | Expected to Reach USD 3098.18 Million | Forecast Period 2023-2027on January 19, 2023 at 2:34 am
The Global Wearable Sensors Market Size Was Valued at USD 447.67 Million in 2021 and is Expected to Expand at a CAGR of 38.05% During the Forecast Period, Reaching USD 3098.18 Million By 2027.
- Wearable, printable, shapeable sensors detect pathogens and toxins in the environmenton January 17, 2023 at 4:00 pm
The sensors also do not depend on electronic components that can be difficult to integrate into flexible wearable materials. The Tufts researchers tested the shelf life of materials embedded with ...
via Bing News