Development of Durable Self-Cleaning Surfaces

In the present project, funded by the Council of Scientific and Industrial Research (CSIR), we intend to develop self-cleaning durable surfaces. Although, several attempts has been made in the literature for mimicking the self-cleaning traits from nature. However, development of robust self-cleaning surfaces, resilient enough to sustain the aggressive working conditions are often desired. Surface engineering at micro- and nano-scale is required to develop self-cleaning property. Through various micro/nano fabrication techniques, mesoscale structures with modulated physiochemical properties are generated. These low dimension structures often lack the required durability. Events such as high impact pressure originating from falling rain drops, wear due to sliding solid objects such as rubbing with fingers, scoring with dust particle etc. and impact of dirt particles can degrade the surfaces. Such degrading events can limit the self-cleaning properties of the surface, making them redundant. Our objective in this project is to develop surfaces possessing self-cleaning property with the use of different micro/nano fabrication techniques. The self-cleaning property will be assessed by measuring the superhydrophobicity and contact angle hysteresis (CAH). Effect of different physiochemical variables such as shape, size, surface chemistry, hierarchical structure will be investigated. Robustness of the developed surfaces will be investigated under various tribological environments 

Faculty

Harpreet Grewal
Assistant Professor
Harpreet Singh
Assistant Professor