German universities have developed batteries smaller than dust, and electronic products have been developing towards miniaturization. Small microelectronic devices (such as sensor systems implanted in human bodies) need computers and batteries smaller than dust. German universities have developed batteries smaller than dust.
German University Developed Battery Smaller than Dust1On February 23rd, a paper was published in Advanced Energy Raw Materials. The paper showed that the research team of chemnitz University of Technology in Germany developed the smallest battery in the world, even smaller than dust in the air, which can be directly used to power a dust-sized microcomputer.
It is understood that there are many sensors or micro-intelligent devices that can be implanted in the body, and computers the size of dust are embedded in them for processing and storing data. As these sensors or smart devices become smaller and smaller, it becomes more and more difficult to power them.
Many miniature batteries used in these devices store electric energy by stacking thin films on chips. The power of such batteries is very limited and there are many limitations. The research team of chemnitz University of Technology chose to roll up the film, which can store more electric energy. This idea has achieved initial results.
This world's smallest battery can also be recharged, and fully charged with electric energy can provide a battery life of more than 10 hour for a microcomputer. In the future, the team also plans to develop rechargeable batteries with energy storage density of 100 microwatts/cm ㎡, which can be applied to more microcomputer usage scenarios. Unfortunately, this new battery is only a PPT product for the time being and does not have the conditions for marketization.
It is understood that the medical community has been exploring the feasibility of using "micro-robots" to treat diseases for a long time, and has also developed many micro-electronic robots that can be implanted into the body to treat diseases. Also in chemnitz University of Technology, the research team led by Professor Oliver G.Schmidt developed the world's smallest micro-robot in 2020, with the size of 0.8*0.8*0. 14mm, which can directly carry drugs into the body and deliver them to designated areas to achieve more targeted therapeutic effects.
Professor Mark Miskin of the University of Pennsylvania and his team have also developed a walking micro-robot with legs. It is said that this robot can be used in the semiconductor field, can be used to repair mobile phone batteries and chips, and even can be used to explore human brain signals.
Although these micro-robots and microcomputers are far away from ordinary people, they are indeed mature in some fields. The birth of microcomputer is really helpful to explore the mystery of human body and treat some diseases. If we can learn more about the characteristics of the human body through microcomputers in the future, some incurable diseases may be cured one day.
I'm still optimistic about the future of microcomputers and batteries, hoping to see them in more fields.
German universities have developed batteries smaller than dust. Scientists from Chemnitz University of Technology and Changchun Institute of Applied Chemistry in China wrote in the magazine Advanced Energy Materials that they have developed the world's smallest battery so far, which can power a computer the size of dust, and it is expected to play an important role in the fields of Internet of Things, micro-medical implants, micro-robot systems and super-flexible electronics in the future.
Electronic products have been developing to miniaturization, and small microelectronic devices (such as sensor systems implanted in human bodies) need computers and batteries smaller than a particle of dust. But so far, the lack of power supply that can run anytime and anywhere and the difficulty of producing integrated miniature batteries have hindered this trend.
Scientists say that submillimeter computers can provide power by developing suitable batteries or "harvesting" power generation methods. However, at present, the production mode of micro-battery is very different from that of ordinary battery. For example, compact batteries with high energy density (button cell, etc. ) is made by wet chemical method. The microbattery produced by this standard process can provide good energy and power density, but its diameter obviously exceeds 1 mm2.
The goal of the research team is to design a battery with a diameter less than 1 mm2, which can be integrated on a chip, and its minimum energy density is still 100 MWh/cm2. In order to achieve this goal, the team has integrated current collectors and electrode strips on a micro scale-Tesla is also using a similar process to manufacture its electric vehicle batteries on a large scale.
The researchers used the so-called "Swiss roll" or "miniature origami" process. They continuously coat thin layers of polymers, metals and dielectric materials on the wafer surface to form a layered system with inherent tension. When the thin layer is peeled off, it will release the mechanical tension, and then it will automatically bounce back and roll into a Swiss roll. Therefore, it is possible to manufacture an automatically wound cylindrical miniature battery without external force.
Using this method, the team has made the smallest rechargeable battery so far, which is smaller than a grain of salt and can power the world's smallest computer chip for about 10 hour. In addition, this method is compatible with the existing chip manufacturing process, and can produce Qualcomm-level miniature batteries on the surface of the wafer.
The researchers said that this kind of micro-battery is expected to show its talents in the fields of Internet of Things and micro-medical implants. And can be used for micro-nano electronic sensors and actuators in the future. They said that this technology still has great optimization potential, and more powerful miniature batteries may appear in the future.
German universities have developed batteries smaller than dust. On February 23rd, Beijing time, the research team of chemnitz University of Technology published a paper in the magazine Advanced Energy Materials, claiming that the world's smallest battery has been developed, which can provide power for dust-sized computers.
Micro-intelligent devices, including sensors that can be implanted in human bodies, need computers smaller than a grain of dust to process data. As smart devices become smaller and smaller, powering them becomes a problem.
At present, miniature batteries store electric energy by stacking thin films on chips.
The existing micro-battery stores electric energy by stacking thin films on the chip, but its size is limited by the stored electric energy. To solve this problem, the research team of chemnitz University of Technology rolled up this film, which can store more electric energy.
The new battery can be recharged, providing power for the microcomputer for up to 10 hour. At present, the new battery does not have the market conditions.
Their goal is to develop a rechargeable battery with an energy storage density of 100 microwatts/cm2, which is suitable for most microcomputer use scenarios, including measuring the ambient temperature.