title: Chiral microstructures (spirals) fabrication by holographic lithography.
abstract: We present an optical interference model to create chiral microstructures (spirals) and its realization in photoresist using holographic lithography. The model is based on the interference of six equally-spaced circumpolar linear polarized side beams and a circular polarized central beam. The pitch and separation of the spirals can be varied by changing the angle between the side beams and the central beam. The realization of the model is carried out using the 325 nm line of a He-Cd laser and spirals of sub-micron size are fabricated in photoresist.
authors.forename: Yee Kwong
authors.initials: YK
authors.lastname: Pang
authors.forename: Jeffrey
authors.initials: J
authors.lastname: Lee
authors.forename: Hung
authors.initials: H
authors.lastname: Lee
authors.forename: Wing Yim
authors.initials: WY
authors.lastname: Tam
authors.forename: C
authors.initials: C
authors.lastname: Chan
authors.forename: Ping
authors.initials: P
authors.lastname: Sheng