A team of engineers at the College of Engineering at the University of Texas at Austin in the United States developed a way to quickly print low-cost disposable wearable micro-biosensors. This sensor can stick to the patient's skin - looks like a tattoo - for monitoring vital vital signs in patients. Soon after, this wearable sensor is expected to be used in hospitals instead of heart rate monitors or pulse oximeters to bring gospel to elderly patients with heart and other illnesses as well as patients of other ages. The team of engineers at Cockerell Engineering College was led by Nanshu Lu. There are already many miniature smart sensors already on the market when they started working on such tattooed wearable sensors. However, these sensors are flawed. Lu Nan Shu said that the problem of existing sensors is not the technology itself, but the manufacturing process, the entire manufacturing process is not only time-consuming and costly. These shortcomings make it almost impossible to make disposable sensors that are cheap and have temporary health monitoring. She said: "If it's a tattoo-type device, nobody wants to be reused, even including you, so one-time use is a key feature." Prior to the advent of such tattoo sensors, similar sensors were fabricated using conventional engineering techniques using mechanical components and metal circuits, which were then combined with a flexible adhesive. The whole process not only consume a lot of time, the cost is also high. In order to solve these problems, the College of Engineering decided to develop other ways to make brittle electronic components not only soft and elastic, but also sticky. Using the principles of 3D printing technology, they found a way to use mechanical cutters to carve out the required structure on a sheet of metal instead of using molds to make electronic components. Lu Nan Shu pointed out: "We started looking for metal sheets can be superimposed on the polymer sheet, basically like the double-sided adhesive attached to the aluminum foil." Eventually, they found this in the hardware store's home improvement products shelf Low cost and soft, flexible metal. The whole search process is incredible. In the final development of the structure, they use gold-like polymer-like components to act as a heat-reflective layer. Lu Nan Shu said: "We invented a manufacturing process, you can cut out the desired structure in these sheets, and then remove the useless parts. The remaining part is printed on the medical tape or tattoo adhesive. " The entire printing process takes about 20 minutes. Unlike the previous approach to making flexible electronic components, this manufacturing process produces very little waste and does not require specialized labs. Lu Nan Shu said he hoped to control the manufacturing cost of each wearable sensor at around $ 1. The team's goal is to integrate multiple sensors and antennas onto a credit card-sized patch to monitor vital vital signs in about a week while wirelessly monitoring doctors and patients' PCs, tablets and smartphones data. This tattooed biosensor can act as an electrocardiograph, measure heart activity, or act as an electroencephalograph to detect brain function - the exact role of which depends on the position of the sensor. Researchers said the wearable sensor can be used to measure skin moisture, respiratory rate and eye activity, blood pressure and oxygen saturation monitoring. From pregnant women to athletes, many patients will be the beneficiaries of this technology. One of the biggest challenges facing mass wearable sensors is wireless operation via Bluetooth or near field communication chips. Unfortunately, microchip chips made by current chip makers are not yet small enough to meet the requirements of such sensors. To this end, Lu Nan Shu and her research team decided to do it yourself, the development of a size of only two square millimeters of microchips. The researchers pointed out that if people can accept coin-sized wireless devices as part of the patch, this wearable sensor can be quickly prepared for use. Lu Nan Shu said: "The coolest is that this is a real platform technology.You can continue to promote the skin, sensor or antenna boundary.You can add what you need on this platform." Electronic Counting And Filling Machine
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