Imagine a diabetic patient who needs to take insulin regularly with needles to control his/her blood glucose level. How can he automatically provide normal glucose level avoiding frequent needle pushing?

Suppose you have a small electronic device one of which components produce execessive heat and needs to be cooled. How such a very small component can be cooled efficiently to control its temperature?

The solution of so many problems of like the above two examples related to the miniaturiazed devices are provided by micropumps.
It's a small scale pump having length of the order of 100 μm or smaller providing a flow in the order of 15 μL/min at a high pressure.

[1]https://www.youtube.com/watch?v=Ysy22E6_uTQ

[2]https://www.youtube.com/watch?v=2OKlHfGYzyo

[3]https://www.youtube.com/watch?v=QwHZd_23ysk

It saves many people's lives having major heart disease when heart loses its pumping power.
Left Ventricular Assist Device (LVAD) pumps oxygen-rich blood from the heart’s left ventricle to the aorta through which it circulates throughout the body.


[1]https://www.youtube.com/watch?v=mOZIYoq32SQ

[2]https://www.youtube.com/watch?v=WrRxjAla8Iw

[3]http://www.heartware.com/products-technology/pump-design

[4]Garrick C. Stewart and Michael M. Givertz (2012) "Mechanical circulatory support for advanced heart failure patients and technology in evolution" Circulation Volume 125, Issue 10, 1304-1315

[5]John P Boehmer and Eric Popjes (2006) "Cardiac failure: mechanical support strategies" Critical Care Medicine Volume 34, Issue 9, S268-S277

Cells can communicate with each other like us. Cardiac cells interact with one other and pass the stimulation to be coupled for a continuous transfer of motion. Using this mechanical coupling, a very thin elastic filament associated with the cells can be propelled to swim.

Imagine a tiny robot of about 600 μm swims through your blood vessel and destroy cancer cells or any blockage in your blood vessel.

This invention of Biological machine is done by a BUET alumni, Professor M Taher A Saif and his group of researchers.

Visit Saif's Lab

Xin Tang, Piyush Bajaj, Rashid Bashirb and Taher A. Saif (2011) "How far cardiac cells can see each other mechanically" Soft Matter Volume 7, 6151-6158

Brian J. Williams, Sandeep V. Anand, Jagannathan Rajagopalan & M. Taher A. Saif (2014) "A self-propelled biohybrid swimmer at low Reynolds number" Nature Communication 5:3081

*The picture is taken from Saif Lab