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Superhydrophobic Surface
Superhydrophobic Surface
Superhydrophobic surfaces show extraordinary water-repellent properties with low drag for fluid flow due to reduced liquid-solid contact area. Due to high contact angle and low contact angle hysteresis these surfaces also show self-cleaning effect. In nature different plants and leaves, such as Lotus leaf and Rose petals show superhydrophobic behaviour due to wax coated micro/nano hierarchical structures on their surfaces.
Superhydrophobic surfaces show extraordinary water-repellent properties with low drag for fluid flow due to reduced liquid-solid contact area. Due to high contact angle and low contact angle hysteresis these surfaces also show self-cleaning effect. In nature different plants and leaves, such as Lotus leaf and Rose petals show superhydrophobic behaviour due to wax coated micro/nano hierarchical structures on their surfaces.
Antibacterial Surface
Antibacterial Surface
Antibacterial surfaces have become very popular in recent years and got potential applications in many fields such as photovoltaic, health care, marine technology, food packaging industry etc. Antibacterial surfaces can be of two types: bactericidal which kills bacteria and bacteriostatic which slows down the growth of bacteria on the surface. There are many naturally existing bactericidal surfaces such as Dragon fly wing, Cicada wing that are very efficient in killing bacteria. Very sharp nano structures are present on these surfaces, which basically rupture the bacteria cell wall and kill the bacteria. In this work we are trying to test the bactericidal activity of nano-structured superhydrophobic surfaces against different kinds of bacteria.
Antibacterial surfaces have become very popular in recent years and got potential applications in many fields such as photovoltaic, health care, marine technology, food packaging industry etc. Antibacterial surfaces can be of two types: bactericidal which kills bacteria and bacteriostatic which slows down the growth of bacteria on the surface. There are many naturally existing bactericidal surfaces such as Dragon fly wing, Cicada wing that are very efficient in killing bacteria. Very sharp nano structures are present on these surfaces, which basically rupture the bacteria cell wall and kill the bacteria. In this work we are trying to test the bactericidal activity of nano-structured superhydrophobic surfaces against different kinds of bacteria.
Droplet Based Energy Harvesting
Droplet Based Energy Harvesting
Low resistance motion of liquids on a well-defined path is beneficial for several MEMS based applications including energy harvesting and switching. By eliminating the contact line we demonstrate low resistance motion of a liquid bulge on pre-wetted strips. The bulge appears on wetted strips due to a morphological instability. The wetted strip confines the mercury bulge and defines its path of motion. In this work we have fabricated and tested an electret based energy harvesting device using liquid bulge motion.
Low resistance motion of liquids on a well-defined path is beneficial for several MEMS based applications including energy harvesting and switching. By eliminating the contact line we demonstrate low resistance motion of a liquid bulge on pre-wetted strips. The bulge appears on wetted strips due to a morphological instability. The wetted strip confines the mercury bulge and defines its path of motion. In this work we have fabricated and tested an electret based energy harvesting device using liquid bulge motion.
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