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When two photons are absorbed at a longer wavelength, typically in the near-infrared (NIR) spectral range, the two-photon photopolymerization process is started. There are two key advantages of the two-photon method over single-photon absorption.
First, the majority of currently available photoresists exhibit very little linear NIR absorption. Therefore, a concentrated NIR laser beam can start photopolymerization solely at the focal point and can penetrate deeply into the photoresist.
Second, various non-linear optical effects occur when using femtosecond lasers to produce ultrashort pulses with a duration less than 100 fs, leading to a non-linear dependency between the rate of polymerization and the laser light intensity.
As a result, the photoresist is only exposed inside the beam’s focus volume. (known as voxel). The intensity of the laser beam is less than the photochemical reaction’s exposure threshold outside of the focus point voxel. Because only this tiny volume is involved in the two-photon polymerization process, exceptional 3D resolution and accuracy are made possible.
The Global Two-Photon Lithography System Market accounted for $XX Billion in 2022 and is anticipated to reach $XX Billion by 2030, registering a CAGR of XX% from 2023 to 2030.
Two-Photon Lithography System 3D printing allows for the creation of microstructures with intricate designs and crucial dimensions as small as a few hundred nanometers. This method is extremely appealing for various applications on the microscale, such as microrobotics, micro-optics, or biosensing, because it can be used to implement a significant amount of 3D design freedom on cutting-edge commercial Two-Photon Lithography systems.
However, it frequently necessitates extensive testing and optimization to navigate the various potential configurations and choose the best settings for the fabrication process.
In addition to the more well-known acrylate-based resins, soft materials are becoming more popular. In this study, we show how to use a Nanoscribe Photonic Professional to create a variety of microscale structures by Two-Photon Lithography System.Using direct laser writing based on Two-Photon Lithography System , it is possible to create structures with incredibly fine details at the micro, meso, and even macroscales.
The employed microscope objective, printing setup, substrate, and resin are the first few fabrication parameters that affect the quality of the 3D printed structures. The final printed item may also be impacted by additional fabrication variables, such as the laser’s power and scan speed as well as post-processing options..
