Zen garden

Zen garden

I need to relax today


The first 3D-printed battery is as tiny as a grain of sand


Imagine a computer so small it could slip through the human bloodstream. At just a millimeter in width, a new battery built by a Harvard University and University of Illinois team is perfectly suited to be a power source for tiny computers. It is also the first battery to ever be fabricated with a 3D printer.

The team used a custom printer and ink to produce the batteries. A nozzle .03 millimeters–or 30 microns–wide deposited layers of nanoparticle-packed paste in a comb-like shape. A second printed comb nestled into the first, their teeth interlocked. These functioned as the two halves of electrodes, which conduct electricity.

After printing, the electrode layers quickly hardened and were placed in a small container filled with solution. The finished product measured in at less than a millimeter wide. The team published their work Tuesday in Advanced Materials (subscription required).

A battery like this could transform fields…

Vezi articolul original 247 de cuvinte mai mult

Follow your heart

   Never give up on your dreams. Even if it scares you, you must follow your heart. You must learn that you are important. Don`t waste your life in an unhappy, sick or useless relationship. You must learn that fear, pitty or habit does not mean love. If you come home half-hearted, if you look at your lover without feeling the need to tell him anything about your day, if you would rather be alone than with him, you must ask yourself what`s wrong. Maybe your love died, maybe he treated you wrong, maybe you feel alone or you desire someone else. Whatever the answer might be, you must change something. Learn that you are important, your feelings are important, so act like it. I know what I`m talking about. Don`t let this stand. Change your life, do what you want, ehat you need, what makes you happy, until it`s too late! Follow your heart!