News and Reviews (Sept 2018)

Große Materialvielfalt

Above and beyond photopolymer resins


A wide choice of printable materials is supported by Nanoscribe’s Photonic Professional GT 3D printers. The available materials are characterized by different optical, mechanical, electrical, chemical and biological properties, as needed, for example, in micro-optics, photonics, MEMS or biomedical applications.

Nanoscribe offers a product portfolio of advanced negative-tone resins for its customers, called IP-photoresins. These liquid resin materials are optimized for two-photon polymerization (2PP), the technique behind the Photonic Professional GT, and have become standard for producing nano-, micro- and mesoscale structures. The IP-resins are designed for excellent performance regarding highest resolution from submicron to micron feature sizes, shape accuracy, fast printing and easy handling for their use with Photonic Professional systems. Furthermore, Nanoscribe’s DeScribe software provides optimized recipes for specific IP-resins and applications. These recipes are the result of years of development and facilitate the 3D-printing workflow with a few clicks, accelerating design iteration cycles. 3D printed structures made of IP-resins are used in a variety of applications, including cell culture experiments, implanted microdevices and printing of functional micro-optics.

Nanoscribe_mechanical-metamaterial-auxetic-negative-Poisson-ratio Nanoscribe_cell-scaffold-retinal-regeneration

Left: Auxetic metamaterial made of IP-Dip. The structure expands when stretched and shrinks when compressed (i.e., with a negative Poisson's ratio).
Right: Photoreceptor cell scaffolds made of IP-S. These prototype structures were used to find optimal design parameters for creating photoreceptor cell scaffolds for retinal regeneration.

Beyond the IP-photoresins, Photonic Professional GT users work with other commercial UV-curable resists used in the microelectronics industry as well; they include SU-8, ORMOCER®s and several positive-tone AZ® resists. Moreover, the choice of materials extends from photopolymer resins to hydrogels and functional composite resins containing nanoparticles (e.g., gold, copper oxide, carbon nanotubes, piezoelectric barium titanate) as well as custom-made materials. Post-print processes and replication methods for serial production allow to transfer 3D polymer structures into different plastics, such as PMMA (polymethyl methacrylate), PDMS (polydimethylsiloxane), PE (polyethylene) and PC (polycarbonate), ceramics, metals or even silicon, glass and carbon.

Nanoscribe_Micromachines_microwalker Nanoscribe_Microfluidic filter element

Left: Soft micromachine made of a liquid-crystalline elastomer that is triggered by light orientating the liquid crystals and causing locomotion. (Courtesy of H. Zeng and D. Wiersma, LENS-Florence)
Right: Non-clogging microfluidic filter element printed in SU-8. (Design provided by IMSAS.)