Single-cell trapping can be done with the help of superhydrophobic and superhydrophilic patterns.
Advancing and receding angles should be measured as the low contact angle hysteresis is also a requirement for superhydrophobicity.
Superhydrophobic surface is defined by having the static water contact angle above 150 ° and contact angle hysteresis less than 5 °.
There are three contact angle measurement methods for superhydrophobic surfaces; static, advancing/receding and roll-off angle.
A self-cleaning surface is any surface with the ability to readily remove any dirt or bacteria on it. Self-cleaning surfaces can be divided into three different categories; superhydrophilic, photocatalytic and superhydrophobic.
Blood-repellent surfaces are needed in medical devices that come in contact with blood. The traditional approach has been the use of antithrombotic surface treatments However, these coatings are prone to eventually wear-off. Superhydrophobic surfaces have been proposed as an alternative solution.
With increasing understanding of the superhydrophobicity, the measurement methods to quantify the degree of hydrophobicity deserve some thought.
This video will explain two main methods for measuring dynamic contact angle.
Superhydrophobic surfaces were an instant hit in the scientific community when they were introduced over two decades ago