91久久久久久久久-91久久久久久久-91久久久久久久-91久久久久久久-免费中文字幕日韩欧美-免费中文字幕

THE 10th ALL IN PRINT CHINA

第十屆中國國際全印展

全印展

中國國際印刷技術(shù)及設(shè)備器材展

China International Exhibition for All Printing Technology & Equipment

October 12-16, 2026

上海新國際博覽中心

Shanghai New International Expo Centre

Supported by

印刷展

Printing Sensors on Gummy Bears

Time:2018-09-27 From:

 

Gummy bears are popular sweets. People have them in offices, at home or in cinemas as a little snack. But now you can also find them at laboratories. A team from the Technical University of Munich (TUM) has discovered a new use for them: bearing microelectrode arrays.
 

 

In the medical sector, microelectrodes can be used to measure and record electrical signals directly in the brain, heart and nervous tissue. However, such highly sensitive applications require soft materials. By now, electrodes could only be attached with great effort to these. Microelectrode arrays usually consist of hard materials like silicon, but the researchers from Germany succeeded in printing them directly onto various soft surfaces.
 

Big Potential for Medical Diagnostics

 

TU Munich and Forschungszentrum Jülich have worked together to print on a gummy bear. What first sounds like a gimmick could change medical diagnostics. After all, the scientists around Prof. Bernhard Wolfrum did not print a picture or lettering, but a microelectrode array. These components consist of a large number of electrodes and can measure changes in the electrical voltage in cells, which emerge for example, during the activity of nerve or muscle cells.
 

But why did the scientists go for gummy bears? They have a characteristic that is particularly important for the use of microelectrode arrays on living cells: They are soft. In their original form, they are made of hard materials like silicon. This results in several problems. When hitting on hard materials, the electrode arrays behave in a way that is extremely critical in contact with living cells: In some cases, this hardness can alter the shape of cells, decrease organ function or trigger inflammation.
 

Rapid Prototyping with an Inkjet Printer

 

These problems can be avoided with electrode arrays on soft materials. As a result, they are the subject of intensive research. The methods which have mostly been used before, are relatively time-consuming and depend on expensive special laboratories. “If you print the electrodes instead, you can produce a prototype relatively quickly and cheaply. The same applies if you need to rework it,” says Bernhard Wolfrum, Professor of Neuroelectronics at TUM. “Such ‘rapid prototyping’ allows completely new ways of working”.
 

Wolfrum and his team use a high-tech version of an inkjet printer, printing electrodes with carbon-containing ink. To prevent the sensors from recording unwanted signals, a neutral protective layer is applied over the carbon webs.
 

Materials for Different Applications

 

The researchers tested the method on various materials. They used the soft silicone polydimethylsiloxane, the substance agar and gelatine. The latter was used in form of a gummy bear, which was first melted and then hardened. Each of these substances has characteristics that are particularly suitable for certain medical applications. For example, implants coated with gelatine can reduce undesired tissue reactions.
 

The team was able to prove that the sensors deliver reliable data by experimenting with cell cultures. With the sensors having an average width of 30 micrometers, they also made it possible to measure the signals of the cells, which is difficult to achieve with established methods.
 

Multiple Application Possibilities

 

Printed soft microelectrode arrays could be used in different areas, one of which is the treatment of patients. “In future, similar soft structures could, for example, monitor nerve or heart function in the body or even serve as pacemakers,” said Professor Wolfrum. He and his team are currently working on printing more complex, three-dimensional microelectrode arrays. Furthermore, they are researching printable sensors that don’t react to voltage fluctuations but selectively to chemical substances.
 

主站蜘蛛池模板: 又污又黄的网站 | 在线你懂的视频 | 欧美a一级 | 亚洲免费国产 | 免费a大片| 性欧美视频在线观看 | 久久ww | 美女扒开内裤无遮挡禁18 | 午夜啪啪福利视频 | 欧美一级在线观看视频 | 天天骑天天射 | 综合婷婷丁香 | 婷婷色综合久久 | 一区二区三区电影 | 免费观看成人欧美1314www | 国产免费久久精品99久久 | 四虎永久在线视频 | 亚洲影视自拍揄拍愉拍 | 69日本人xxxx16-18| 免费拍拍视频 | 国产黄色在线视频 | 久久综合成人网 | 男人和女人在床做黄的网站 | 久久国产色 | 黄色插插插 | 日本三级黄 | 国产精品天天爽夜夜欢张柏芝 | 一区二区三区在线播放 | 日本加勒比在线精品视频 | 国产一区二区三区夜色 | 国产福利在线观看你懂的 | 色天使久久综合网天天 | 手机免费看大片 | 午夜在线观看网站 | 久久综合九色综合欧洲 | 欧美在线视频看看 | 美女黄色一级毛片 | 成年人网站在线 | 欧美日韩一区视频 | 男人的天堂一区二区视频在线观看 | 毛片的网站 |