Three‐dimensional optical laser lithography beyond the diffraction limit

J Fischer, M Wegener - Laser & Photonics Reviews, 2013 - Wiley Online Library
Direct laser writing has become a versatile and routine tool for the mask‐free fabrication of
polymer structures with lateral linewidths down to less than 100 nm. In contrast to its planar …

Sensitive photoresists for rapid multiphoton 3D laser micro‐and nanoprinting

P Kiefer, V Hahn, M Nardi, L Yang… - Advanced Optical …, 2020 - Wiley Online Library
Driven by recent advances in rapid multiphoton single‐focus 3D laser nanoprinting,
multifocus variants thereof, and projection‐based multiphoton 3D laser nanoprinting, the …

Conical hollow microhelices with superior swimming capabilities for targeted cargo delivery

C Xin, L Yang, J Li, Y Hu, D Qian, S Fan… - Advanced …, 2019 - Wiley Online Library
Inspired by flagellate microorganisms in nature, the microhelix is considered as an ideal
model for transportation in fluid environment with low Reynolds number. However, how to …

The materials challenge in diffraction‐unlimited direct‐laser‐writing optical lithography

J Fischer, G von Freymann, M Wegener - Advanced materials, 2010 - infona.pl
Using a novel photoresist (composed of pentaerythritol triacrylate and isopropyl
thioxanthone) that favors stimulated emission depletion by a π‐π* transition and using a two …

3D direct laser writing using a 405 nm diode laser

P Mueller, M Thiel, M Wegener - Optics letters, 2014 - opg.optica.org
Three-dimensional (3D) direct laser writing commonly uses near-infrared femtosecond laser
pulses. Here, we use a quasi-cw blue diode laser at a 405 nm wavelength. As prerequisite …

Femtosecond mathieu beams for rapid controllable fabrication of complex microcages and application in trapping microobjects

C Wang, L Yang, Y Hu, S Rao, Y Wang, D Pan, S Ji… - ACS …, 2019 - ACS Publications
Structured laser beam based microfabrication technology provides a rapid and flexible way
to create some special microstructures. As an important member in the propagation of …

Direct laser writing of complex microtubes using femtosecond vortex beams

L Yang, D Qian, C Xin, Z Hu, S Ji, D Wu, Y Hu… - Applied Physics …, 2017 - pubs.aip.org
Microfabrication by using structured laser beams provides a rapid and facile way for creating
some specific microstructures. As an important member in the structured beam category …

Modelling Fabry-Pérot etalons illuminated by focussed beams

DM Marques, JA Guggenheim, R Ansari, EZ Zhang… - Optics …, 2020 - opg.optica.org
Fabry-Pérot (FP) etalons are used as filters and sensors in a range of optical systems. Often
FP etalons are illuminated by collimated laser beams, in which case the transmitted and …

Assessment of optical systems by means of point-spread functions

JJM Braat, S van Haver, AJEM Janssen, P Dirksen - Progress in optics, 2008 - Elsevier
Publisher Summary This chapter presents the computation of the point-spread function of
optical imaging systems and the characterization of these systems by means of the …

Fighting against diffraction: apodization and near field diffraction structures

H Wang, CJR Sheppard, K Ravi, ST Ho… - Laser & Photonics …, 2012 - Wiley Online Library
Diffraction is a natural phenomenon, which occurs when waves propagate or encounter an
obstacle. Diffraction is also a fundamental aspect of modern optics: all imaging systems are …