Axicon produces long, thin optical trap.

Reports on the development of high-quality conical lenses (axicons) of SU-8 photoresist on glass using electron-beam lithography by researchers at Nanyang Technological University in Singapore and Shenzhen University in China. Use of the Bessel beam to trap and levitate a silica sphere; Other approaches to optical trapping and levitation; Applications of micro-axicons to lab-on-a-chip technologies.