Most fitness bracelets, even the most sophi$δsticated fitness tracking bracelets 'ε<on the market, are not just counting"≠ your steps or measuring your heart rate. Bu↑↑≥‌t researchers have developed an inte¶₽±∞lligent bracelet that can do m ↑↑ore: it's built in↑♠♥×to a headband or wristband that monitors cπσ↓hemicals in body sweat, can be use•↓¥εd to noninvasively assess medical conditionφ♣≠s, identify drug abuse, or help coaches and ≈→trainers optimize the performance of el  '✘ite athletes, say scien÷<₽tists.

Wearing electronic smart Bracelet health test✘™β

Wearable electronics may be a fad ₹≠ λin health awareness, but tεσπhe functions of these devices, many of w £±hich are worn on the wrist lik✘€←γe smart bracelets are usually limited to ca‌β↑lorie burning based on heart rate or travel dis☆<tance. But every active person has a lot of infoε€₹™rmation to do: sweat. H©♦→uman sweat is full of materia€↕l that betrays the internal material.

We can make full use of sweat information. T®≈he device has two main parts. Some oλ™δ™f them are made of f≥§lexible plastics and containΩπφ smart hand rings with custom sensors that me✔♥$ asure sodium and potassium ions,€♥±β key electrolytes foφπ✔r sweat production, and≠♣> concentrations of glucose and lactic a ®♠cid, allowing a better understanding of what β​÷ happens in human cells. At high le"♣'λvels in cells, lactic acid,  ×a negatively charged ion₽♥ from lactic acid, accumulates when t¥₩ ₽he cell lacks enough oxygen, π•‌γdestroying the body's ∞φpH balance. The smart bracelet of the ♣÷∞εtemperature sensor helps to calibrate the iλ$¶€nformation collected by other sensors. Ano≠ φther part of the device¶←€ is a flexible circu☆→it board, including ↔¥∏&11 ready-made high-end smart BraceletΩ×£ chips.

Smart Bracelet creative try to tap sweat

The creativity of the smart bracelet is pε☆receded by the attempt to tap the sweat prob→≤lem: flexibility and c€®omputational power. In the pa¶∑st, engineers using silicon-based comp≥‌uter chips have found tha×≤t inflexible parts often  δ≥do not keep in touch with human skin. Other t↕λ€eams using flexible plastic smart br©§€λacelets have found that t'α±$hose who do not usually have th φ♠e computational power required ε≠to measure a variety of substances or those that•§ include more than simpl'£♣€e functions.

Jason Hackenfield, an electrical engππ×ineer at the University of Cincinnatβ✘✘i in Ohio, said no one else measured many things  €£at the same time, and he was not involved i♥→σn the project. "Every time you can ‌δmeasure something else, smart Brac™ elet becomes smarter."

Functional test of new smart Bracelet

Researchers report today in the onlΩ$↓ine edition of the J§♠♦ournal Nature that the smart bracel∞ et functions as predicted in laboratε€'ory tests. In addition to being portable ♥↕ and non-invasive, the protot$₽∏ype monitors chemical¥​®£s in real time, eliminating t•> <he usual time and effort required to ♣>₹§collect samples and d™←♥♥eliver them to the laboratory for an♦πalysis using large, expensive equipmen&✘t.

"The ability to ×‌continuously monitor sweat provides new♦‍‍ capabilities," says John Rogers, a materiε≤♦als scientist at the University of Iλσllinois at Urbana-Champaign. In add≈≥•ition to basic research in human physiβ←ology, including how people respond t∞&♠o exercise or other stress σes, the device can al±₹×so be used in a variety of c §linical situations. D↓™¶octors can monitor everything ≥₩from depression to drug use and customize s≈₽mart bracelets to meas π•ure the breakdown of drugs and biomar≠±♠kers.

Alternatively, the device can m±≥<<onitor the speed or speed of an individual pa¶↕♦tient's response to a drug during tr₹δeatment with an intelligent hand ring over a ¶$period of time, enabling doctors to c♥φ£ustomize the dose. The device ★©'γcan also be used to warn athletes and pa♠‍tients of various medical conditions, including f≠•✘atigue, dehydration and overheating. At §★‌present, the prototype boaε<rd of the team is very large.But th✘α©©e 11 computer chips used by the researc¶↕≈±hers could be integrated in♠↓α±to a custom smart ring chip, making future vers•✔λ≠ions of the device smaller and usable for infan¶¥"≥ts and children as well ☆✘as adults. In addition, the next generat±↑ ion of smart bracelets also have the abilit↑∞ ≈y to disconnect and process sen>♣​×sors, but retain and reuse electronic smart ±∞bracelets.

Commercializing a team's equipmentδ€≥• into a medical product re φ✔→quires lengthy clinical testing a×♠nd evaluation - a pro‌σcess that may take years to complete.