**9. Conclusion**

Microfluidic devices are one of the most widely used devices of twenty-first century. They are being used in almost all the fields including biomedical, energy, chemical, environmental, etc. Microfluidics is the technology based upon various types of taxis, specifically chemotaxis. Surface wettability is an essential factor in the development of microfluidics. Elucidating mechanisms to improve surface wettability will help in the betterment of microfluidic devices. There are still unexplored applications of microfluidics such as in paint industry: to study the mixing and spreading of paints. Initially, microfluidics developed due to advancement in the field of silicon etching and molding of micro channels technique. The further advancement in the fabrication techniques will pave way for development of high-leveled microfluidic devices that will open a new era of research in all the fields.
