The Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but does not cause damage when removed. (Source: The Karp Lab/Brigham and Womenís Hospital)
Nice article Ann. Yet another product approach inspired by nature's handiwork.
I am curious about one thing, which is the role that moisture plays in turning the gripping ability on and off. Controlling moisture to the bandage in an organic environment seems, well, uncontrollable given sweat, blood, mucous, etc. How do they get the bandage dry on demand so that it releases?
Clinton, the mechanics aren't wet vs dry, but engorged with fluid so hooks interlock with intestinal walls/wound tissue, vs not engorged so they disconnect from same. You're right, in this environment everything is wet, so getting something dry is not possible, hence, this clever design.
Chuck, I know it seems counterintuitive, but the tiny plastic hooks are so small and flexible/soft that they're supposed to be painless. The whole point of the device is adhering to wounds while not causing pain and then being easy to take off when not engorged with fluid.
Wow. They have to look pretty hard for examples in nature to find this parasite's ability to hook onto fish intestines. Fascinating story, Ann. By the way, I recently found out that a hearty 60 percent of species on earth are parasitic, while only 40 percent are non-parasitic.
Some of the biggest self-assembled building blocks and structures made from engineered DNA have been developed by researchers at Harvard's Wyss Institute. The largest, a hexagonal prism, is one-tenth the size of an average bacterium.
Arevo Labs' end-production 3D printing technology for carbon composites includes a high-temperature, filament fusion printer head design and firmware for use with the company's new carbon fiber and nanotube reinforced high-temperature matrix polymers like PEEK.
Stratasys will buy Solid Concepts and Harvest Technologies and combine them with its RedEye service business. The plan takes aim at end-production manufacturing and will create one of the biggest commercial 3D printing and AM service bureaus.
The International Federation of Robotics reports that global sales of industrial robots decreased by 4% in 2012 over 2011. The biggest hit was electrical/electronics manufacturing, down by 13%; but by region, the Amerficas did well.
At the JEC Europe 2014 composites show in Paris, many companies showcased their carbon fiber composite products, especially for volume automotive manufacturing. Some companies touted their contributions to BMW's all-carbon composite body-in-white. Others introduced automotive products and processes.
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