中国日本高清免费视频网-中国特黄特级真人毛片-中国性xxxxxbbbbb-中国性猛交xxxx乱大交-欧美成视频一theporn-欧美成视频在线观看

THE 10th ALL IN PRINT CHINA

第十屆中國(guó)國(guó)際全印展

全印展

中國(guó)國(guó)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(guó)際博覽中心

Shanghai New International Expo Centre

Supported by

印刷展

How Sound Waves Revolutionize 3D Printing

Time:2018-11-19 From:

Using sound waves to print droplets of viscous materials and metal: Researchers at Harvard University made it possible. They developed a new printing process, which is quite promising for the pharmaceutical and many other industries.
 

Header Picture: Daniele Foresti, Jennifer A. Lewis/Harvard University
 

Researchers from Harvard University have developed a new printing process that uses sound waves to produce droplets of viscous materials and metal. This method can be used to produce biopharmaceuticals, cosmetics, food as well as optical and conductive materials.
 

We’ve overcome the times when printing was just a method of putting text and images on paper a while ago. Printing techniques such as 3D printing are used to produce customized electronics and magnets, as well as implants, microcapsules and tissue for medical applications and even aircraft components.
 

The Solution for Printing Viscous Materials

 

However, one application has been a problem so far: printing droplets of viscous materials, such as those required for cell solutions or biopolymers in biomedical applications. These solutions usually have a viscosity that is at least 100 times higher than that of water, and some are even more viscous. As Daniele Foresti from Harvard University and his colleagues explain, they are therefore not suitable for common inkjet or electrohydrodynamic printing techniques.

 

“Our goal was therefore to develop a pressure system that would function regardless of the material properties of the liquid,” explains Foresti. The idea was to use sound waves to pull viscous droplets out of the nozzles and bring them to the right size. It has long been known that acoustic fields exert a force on objects and can even make them float.
 

Using the Potential of Acoustic Forces in Printing

 

“By using acoustic forces, we’ve created a new technology that makes it possible to print a variety of materials in drop form as needed,” explains Jennifer Lewis from Harvard University. “It’s exciting, because it can be applied to a very broad range of liquids.”

For their “Acoustic printer”, the researchers built an acoustic resonator that uses ultrasound waves to generate a focused acoustic field that is extremely amplified by resonance. This field can reach frequencies of up to one megahertz and exerts a force that can exceed the force of gravity at the printer nozzle by a factor of one hundred, as Foresti and his colleagues report.
 

The scientists have tested their method on materials like honey, stem cell fluid, biopolymers and liquid metal. With the new printing technology, electronic components, but also pharmaceutical capsules or biomedical test kits could be produced more easily than before, say the scientists.
 

An Important Breakthrough for Many Industries

 

Additionally, they have already produced a microlens from an array of optically active resins. Because more than 99.9% of the intensive sound waves are reflected by the surface of the drops, living cells or sensitive molecules in the dilutions are not damaged, as the researchers report.
 

“Our technology could be of direct importance to the pharmaceutical industry,” says Lewis. “But we believe that this technology could also become an important platform for other industries.”

主站蜘蛛池模板: 午夜色片 | 2345成人高清毛片 | 色噜噜噜噜色 | 久久久久国产午夜 | 91最新网站免费 | 天天摸天天操天天爽 | 免费一级特黄特色大片在线观看看 | 亚洲黄色一区 | 欧美色图在线视频 | 一本到午夜92版免费福利 | 在线免费看视频 | 久久精品国产精品亚洲精品 | 日韩免费无砖专区2020狼 | 热re66久久精品国产99热 | 婷婷在线观看网站 | 操操干| 日韩一级在线播放免费观看 | 日本aaaa级毛片在线看 | 抽搐一进一出gif免费男男 | 深夜视频在线 | 奇米影视四色7777 | 色爱区综合激情五月综合激情 | 免费的很黄很色的床小视频 | 57pao成人永久免费视频 | 午夜欧美成人久久久久久 | 三级视频在线 | 久久精品伊人波多野结 | 天天噜天天干 | 欧美午夜电影 | 嫩草影院网站入口 | videos另类重口tv | 碰免费人人人视频 | www.四虎影| 日本一区二区不卡视频 | 天堂在线中文 | 91大神成人偷拍在线观看 | 天天插日日插 | 国产免费播放一区二区三区 | 国产一级爱c片免费播放 | 激情五月亚洲色图 | 国产亚洲综合精品一区二区三区 |