Two-photon induced polymerization in a porous polymer film to create multi-layer structures

2021 ◽  
Author(s):  
Ying Huang ◽  
Yusheng Zhang ◽  
Yuming Su ◽  
Zhenghao Zhai ◽  
Jiawei Chen ◽  
...  
Keyword(s):  
3D Printing ◽  
Polymer Film ◽  
Porous Film ◽  
Porous Polymer ◽  
Complex Structures ◽  
Two Photon ◽  
Layer Structures

Two-photon induced polymerization in a porous film enables the printing of multi-layer patterns towards 3D printing of multi-component complex structures.

Reinforced shape-tunable microwrinkles formed on a porous-film-embedded elastomer surface

Soft Matter ◽  
2014 ◽  
Vol 10 (37) ◽  
pp. 7165-7169 ◽  
Author(s):  
T. Ohzono ◽  
Y. Hirai ◽  
K. Suzuki ◽  
M. Shimomura ◽  
N. Uchida
Keyword(s):  
Polymer Film ◽  
Structural Design ◽  
Porous Film ◽  
Porous Polymer ◽  
Hard Layer ◽  
Mechanical Durability ◽  
Interpenetrated Structure

A new structural design for wrinkling to improve mechanical durability by exploiting a porous polymer film embedded on the surface of an elastomer is proposed. The embedded thin porous film acts as a hard layer, which buckles into wrinkles, and the interpenetrated structure effectively suppresses fatal failures such as delamination and cracking.

scholarly journals MOF Channels within Porous Polymer Film: Flexible, Self-Supporting ZIF-8 Poly(ether sulfone) Composite Membrane

2016 ◽  
Vol 28 (21) ◽  
pp. 7638-7644 ◽  
Author(s):  
Samuel C. Hess ◽  
Robert N. Grass ◽  
Wendelin J. Stark
Keyword(s):  
Polymer Film ◽  
Composite Membrane ◽  
Porous Polymer

Simple fabrication of a three-dimensional porous polymer film as a diffuser for organic light emitting diodes

Nanoscale ◽  
2014 ◽  
Vol 6 (23) ◽  
pp. 14446-14452 ◽  
Author(s):  
Byung Wan Lim ◽  
Min Chul Suh
Keyword(s):  
Polymer Film ◽  
Spin Coating ◽  
Three Dimensional ◽  
Cost Effective ◽  
Porous Polymer ◽  
Organic Light Emitting Diodes ◽  
Coating Process ◽  
Light Emitting ◽  
Organic Light ◽  
Ultrasonic Humidifier

We have investigated a simple and cost-effective fabrication method for a porous polymer film employing the spin-coating process during continuous supply of water droplets by an ultrasonic humidifier.

Fabrication of porous thin films of block copolymer at the liquid/liquid interface and construction of composite films doped with noble metal nanoparticles

RSC Advances ◽  
2015 ◽  
Vol 5 (85) ◽  
pp. 69339-69347 ◽  
Author(s):  
Qian Wang ◽  
Xingjuan Zhao ◽  
Xiao-Kai Zhang ◽  
Yong-Ill Lee ◽  
Hong-Guo Liu
Keyword(s):  
Thin Films ◽  
Block Copolymer ◽  
Metal Nanoparticles ◽  
Polymer Film ◽  
Noble Metal ◽  
Composite Films ◽  
Liquid Interface ◽  
Porous Polymer ◽  
Noble Metal Nanoparticles ◽  
Porous Thin Films

A porous polymer film was fabricated at a liquid/liquid interface that can be used as a matrix to form various composite films.

3D printing hybrid organometallic polymer‐based biomaterials via laser two‐photon polymerization

2019 ◽  
Vol 68 (11) ◽  
pp. 1928-1940 ◽  
Author(s):  
Evaldas Balčiūnas ◽  
Sara J Baldock ◽  
Nadežda Dreižė ◽  
Monika Grubliauskaitė ◽  
Sarah Coultas ◽  
...  
Keyword(s):  
3D Printing ◽  
Organometallic Polymer ◽  
Two Photon ◽  
Two Photon Polymerization

scholarly journals 4D Printing: A Review on Recent Progresses

Micromachines ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 796 ◽  
Author(s):  
Honghui Chu ◽  
Wenguang Yang ◽  
Lujing Sun ◽  
Shuxiang Cai ◽  
Rendi Yang ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Three Dimensional ◽  
Complex Structures ◽  
Future Prospects ◽  
4D Printing ◽  
Stimulation Method ◽  
Shape Property ◽  
External Stimuli

Since the late 1980s, additive manufacturing (AM), commonly known as three-dimensional (3D) printing, has been gradually popularized. However, the microstructures fabricated using 3D printing is static. To overcome this challenge, four-dimensional (4D) printing which defined as fabricating a complex spontaneous structure that changes with time respond in an intended manner to external stimuli. 4D printing originates in 3D printing, but beyond 3D printing. Although 4D printing is mainly based on 3D printing and become an branch of additive manufacturing, the fabricated objects are no longer static and can be transformed into complex structures by changing the size, shape, property and functionality under external stimuli, which makes 3D printing alive. Herein, recent major progresses in 4D printing are reviewed, including AM technologies for 4D printing, stimulation method, materials and applications. In addition, the current challenges and future prospects of 4D printing were highlighted.

scholarly journals Stitchless support-free 3D printing of free-form micromechanical structures with feature size on-demand

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Linas Jonušauskas ◽  
Tomas Baravykas ◽  
Dovilė Andrijec ◽  
Tomas Gadišauskas ◽  
Vytautas Purlys
Keyword(s):  
3D Printing ◽  
Free Form ◽  
Complex Structures ◽  
Production Lines ◽  
Feature Size ◽  
Voxel Size ◽  
Translation Velocity ◽  
Micromechanical Structures ◽  
Simultaneous Movement ◽  
Good Agreement

AbstractFemtosecond laser based 3D nanolithography is a powerful tool for fabricating various functional micro- and nano-objects. In this work we present several advances needed to push it from the laboratory level use to the industrial production lines. First, linear stage and galvo-scanners synchronization is employed to produce stitch-free mm-sized structures. Furthermore, it is shown that by varying objective numerical apertures (NA) from 1.4 NA to 0.45 NA, voxel size can be tuned in the range from sub μm to tens of mm, resulting in structuring rates between 1809 μm3/s and 313312 μm3/s at 1 cm/s translation velocity achieved via simultaneous movement of linear stages and scanners. Discovered voxel/throughput scaling peculiarities show good agreement to ones acquired with numerical modeling. Furthermore, support-free 3D printing of complex structures is demonstrated. It is achieved by choosing pre-polymer that is in hard gel form during laser writing and acts as a dissolvable support during manufacturing. All of this is combined to fabricate micromechanical structures. First, 1:40 aspect ratio cantilever and 1.5 mm diameter single-helix spring capable of sustaining extreme deformations for prolonged movement times (up to 10000 deformation cycles) are shown. Then, free-movable highly articulated intertwined micromechanical spider and squids (overall size up to 10 mm) are printed and their movement is tested. The presented results are discussed in the broader sense, touching on the stitching/throughput dilemma and comparing it to the standard microstereolithography. It is shown where multiphoton polymerization can outpace standard stereolithography in terms of throughput while still maintaining superior resolution and higher degree of freedom in terms of printable geometries.

Scalable submicrometer additive manufacturing

Science ◽  
2019 ◽  
Vol 366 (6461) ◽  
pp. 105-109 ◽  
Author(s):  
Sourabh K. Saha ◽  
Dien Wang ◽  
Vu H. Nguyen ◽  
Yina Chang ◽  
James S. Oakdale ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Design Space ◽  
Three Dimensional ◽  
Complex Structures ◽  
Layer By Layer ◽  
Promising Candidate ◽  
Single Digit ◽  
Cross Sectional ◽  
Two Photon ◽  
Nanoscale Features

High-throughput fabrication techniques for generating arbitrarily complex three-dimensional structures with nanoscale features are desirable across a broad range of applications. Two-photon lithography (TPL)–based submicrometer additive manufacturing is a promising candidate to fill this gap. However, the serial point-by-point writing scheme of TPL is too slow for many applications. Attempts at parallelization either do not have submicrometer resolution or cannot pattern complex structures. We overcome these difficulties by spatially and temporally focusing an ultrafast laser to implement a projection-based layer-by-layer parallelization. This increases the throughput up to three orders of magnitude and expands the geometric design space. We demonstrate this by printing, within single-digit millisecond time scales, nanowires with widths smaller than 175 nanometers over an area one million times larger than the cross-sectional area.

Axial Control of Two-Photon Polymerization With Femtosecond Bessel Beam

2017 ◽  
Author(s):  
Xiaoming Yu ◽  
Meng Zhang ◽  
Shuting Lei
Keyword(s):  
3D Printing ◽  
Bessel Beam ◽  
Average Diameter ◽  
Axial Direction ◽  
Polymerization Process ◽  
Layer By Layer ◽  
Light Modulator ◽  
Simultaneous Generation ◽  
Two Photon ◽  
Two Photon Polymerization

Stereolithography of three-dimensional, arbitrarily-shaped objects is achieved by successively curing photopolymer on multiple 2D planes and then stacking these 2D slices into 3D objects. Often as a bottleneck for speeding up the fabrication process, this layer-by-layer approach originates from the lack of axial control of photopolymerization. In this paper, we present a novel stereolithography technology with which two-photon polymerization can be dynamically controlled in the axial direction using Bessel beam generated from a spatial light modulator (SLM) and an axicon. First, we use unmodulated Bessel beam to fabricate micro-wires with an average diameter of 100 μm and a length exceeding 10 mm, resulting in an aspect ratio > 100:1. A study on the polymerization process shows that a fabrication speed of 2 mm/s can be achieved. Defect and deformation are observed, and the micro-wires consist of multiple narrow fibers which indicate the existence of the self-writing effect. A test case is presented to demonstrate fast 3D printing of a hollow tube within one second. Next, we modulate the Bessel beam with an SLM and demonstrate the simultaneous generation of multiple focal spots along the laser propagation direction. These spots can be dynamically controlled by loading an image sequence on the SLM. The theoretical foundation of this technology is outlined, and computer simulation is conducted to verify the experimental results. The presented technology extends current stereolithography into the third dimension, and has the potential to significantly increase 3D printing speed.

scholarly journals Nanoscale 3D printing of hydrogels for cellular tissue engineering

2018 ◽  
Vol 6 (15) ◽  
pp. 2187-2197 ◽  
Author(s):  
Shangting You ◽  
Jiawen Li ◽  
Wei Zhu ◽  
Claire Yu ◽  
Deqing Mei ◽  
...  
Keyword(s):  
Tissue Engineering ◽  
3D Printing ◽  
Cellular Tissue ◽  
Two Photon ◽  
Two Photon Polymerization

Two-photon polymerization enables nanoscale 3D printing of hydrogels.

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