Direct Writing

What is Two-Photon Absorption?

What is Two-Photon Absorption?

Two-photon absorption (TPA) is the simultaneous absorption of two-photons of the same or different wavelenth by a material. In physics two-photon absorption

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Multimaterial 3D Laser Microprinting

This post deals with the a new method for mulimaterials two-photon lithography from the paper entitled “Multimaterial 3D laser microprinting using an integrated microfluidic system” published in Science Advances[1] . Facile integration of

5 mins read

A Castle on a Pencil Lead

This video demonstration of two-photon lithography (laser direct writing) shows the fabrication of a microscopic castle on top a pencil lead. It was produced and shared by the team led by Prof.

1 min read

How Small can we 3D Print?

Current techniques provide 3D printing of structures as small as few nanometers. Main candidates from producing complex 3D structures are two-photon lithography, ion-beam lithography and Atomic force microscopy based lithographic technique. The

2 mins read
Classic Papers about Direct Laser Writing

Classic Papers about Direct Laser Writing

This post will introduce a roll call of classic papers about direct laser writing (DLW) in a chornological order, and talk briefly about their significance. Over the years there have been many

17 mins read
What is Two-Photon Absorption?

What is Two-Photon Absorption?

Two-photon absorption (TPA) is the simultaneous absorption of two-photons of the same or different wavelenth by a material. In physics two-photon absorption is categorized as a third-order nonlinear optical phenomenon. The image on

3 mins read