Functional micro‐concrete 3D hybrid structures fabricated by two‐photon polymerization

Yang Li; Lianwei Chen; Fang Kong; Zuyong Wang; Ming Dao; Chwee	Teck Lim; Fengping Li; Minghui Hong

doi:10.3969/j.issn.1003-501X.2017.04.002

Article navigation > Opto-Electronic Engineering > 2017 Vol. 44 > No. 4 > 393-399

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Yang Li, Lianwei Chen, Fang Kong, et al. Functional micro‐concrete 3D hybrid structures fabricated by two‐photon polymerization[J]. Opto-Electronic Engineering, 2017, 44(4): 393-399. doi: 10.3969/j.issn.1003-501X.2017.04.002

Citation:

Yang Li, Lianwei Chen, Fang Kong, et al. Functional micro‐concrete 3D hybrid structures fabricated by two‐photon polymerization[J]. Opto-Electronic Engineering, 2017, 44(4): 393-399. doi: 10.3969/j.issn.1003-501X.2017.04.002

Functional micro‐concrete 3D hybrid structures fabricated by two‐photon polymerization

1.
National University of Singapore, 4 Engineering Drive 3, Singapore 117576, Singapore
2.
State Key Laboratory of Optical Technologies for Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209, China
3.
Singapore MIT Alliance Research and Technology, Singapore 138602, Singapore
4.
College of Mechanical and Electrical Engineering, Wenzhou University, Wenzhou 325025, China

More Information

^†These authors contributed equally to this work
Corresponding author: Hong Minghui, E-mail: elehmh@nus.edu.sg

Received Date 24 November 2016

Revised Date 12 January 2017

Published Date 15 April 2017

Abstract

Abstract

Arbitrary micro-scale three-dimensional (3D) structures fabrication is a dream to achieve many exciting goals that have been pursued for a long time. Among all these applications, the direct 3D printing to fabricate human organs and integrated photonic circuits are extraordinary attractive as they can promote the current technology to a new level. Among all the 3D printing methods available, two-photon polymerization (2PP) is very competitive as it is the unique method to achieve sub-micron resolution to make any desired tiny structures. For the conventional 2PP, the building block is the photoresist. However, the requirement for the building block is different for different purposes. It is very necessary to investigate and improve the photoresist properties according to different requirements. In this paper, we presented one hybrid method to modify the mechanical strength and light trapping efficiency of the photoresist, which transfers the photoresist into the micro-concretes. The micro-concrete structure can achieve ±22% strength modification via a silica nano-particles doping. The structures doped with gold nano-particles show tunable plasmonic absorption. Dye doped hybrid structure shows great potential to fabricate 3D micro-chip laser.
- 3D nano-printing /
- two-photon polymerization /
- hybrid /
- micro-concrete

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References

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Overview

Overview

Abstract:Arbitrary micro-scale three-dimensional (3D) structures fabrication is a dream to achieve many exciting goals that have been persuaded for a long time. Among all these applications, the direct 3D printing to fabricate human organs and integrated photonic circuits are extraordinarily attractive as they can promote the current technology to a new level. Among all the 3D printing methods available, two-photon polymerization (2PP) is very competitive as it is a unique method to achieve sub-micron resolution to make any desired tiny true 3D structures. To achieve it, 2PP relies on the direct laser writing to transfer the pattern into the photoresist material by the two photon absorption to initialize the in-situ polymerization. However, the requirements for the building blocks are different for different purposes. Even though 2PP is of many superior properties, it is often considered as a supporting role to make the initial polymer structural molds or backbones for further processing steps. The reason is that the photoresist used in 2PP lacks the proper material properties to act as the functional materials in different applications. To realize it, it is the key to study how to make the photo-resist controllable according to different demands. In this paper, we presented one hybrid method to modify the mechanical strength and light trapping efficiency of the photoresist, which transfers the photoresist into the micro-concretes. Compared with other lithographic technologies, our approach is more favorable since the fabrication is fast. Hence, it is more suitable for scalable production. Specifically, the 2PP process is adapted to directly process three hybrid composites with different functionalities: 1) ±22% strength modification is realized in experiment via a silica nano-particles doping, which can be used to achieve tunable mechanical strength for bio-structure construction; 2) the structures doped with gold nano-particles show tunable plasmonic absorption to be used in light trapping sensors; 3) dye doped hybrid structure shows great potentials to fabricate 3D micro-chip laser. These three specific works serve as good examples to demonstrate that the hybrid 2PP method can be introduced as a unique and powerful 3D nano-printing technique for massive scale effective fabrications to make the key functional components for many unique applications.