Article
Polymer Science
Demei Lee, Ya-Ling Tang, Shih-Jung Liu
Summary: Nanofeatured polymeric films were successfully fabricated using nanosphere lithography and UV soft-mold roller embossing, showcasing their application in solar cells. Empirical outcomes demonstrate that UV soft-mold roller embossing offers a simple yet potent way of producing nanofeatured films, with different processing variables influencing the reproducibility of the films.
Article
Nanoscience & Nanotechnology
Song Gao, Tonghuan Zhan, Wei Zhou, Fuzhou Niu, Shuqiang Min, Aijun Xiao, Bing Xu
Summary: This paper presents a method for fabricating complex non-rectangular microchannels by embossing-based soft lithography using a mold (e.g., balls). The use of aluminum foil allows for complete replication of the ball morphology, resulting in microchannels with a perfect circular cross-section. By adjusting fabrication parameters such as gap size and ball diameter, the width and height of the circular microchannel can be precisely controlled. Furthermore, the method can be extended to create more complex channels with different cross-sectional shapes or combined channels by replacing the balls with molds of various cross sections. The complex non-rectangular channels were utilized to construct microfluidic valves and improve the mixing results of two liquid.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Haifeng Yang, Jingbin Hao, Haoda Wang, Mengsen Ding
Summary: In this study, a new metal micro-mold manufacturing method using laser shock imprinting (LSI) on the surface of metal foil is proposed. The strength of the mold increased after laser shocking, and a copper foil with a flat back was selected as the final metal micro-mold based on analysis and numerical simulation. The metal micro-mold produced via LSI showed high accuracy and molding stability, with potential applications in roll-to-roll hot embossing.
Article
Chemistry, Analytical
Matthew B. Lemon, Cecilia C. Douma, Gretchen S. Burke, Michael T. Bowser
Summary: The challenge of fabricating high-performance microscale devices in the microfluidics field is addressed in this study. A micro free-flow electrophoresis (mu FFE) device is fabricated using PolyJet 3D printing and hot embossing techniques, with channels fully enclosed through solvent-assisted thermal bonding. The device achieves baseline separation of fluorescent compounds and offers a short production cycle and low cost.
Article
Engineering, Manufacturing
Ruslan Melentiev, Gilles Lubineau
Summary: Hot embossing is a promising method for surface micropatterning of low-value-added products made of cheap polymers. However, conventional strategies often result in defective replicas or damaged molds when replicating 1 micrometer structures on ABS. This study proposes a viscous embossing strategy that enables damage-less demolding of 1 micrometer structures on a large area by embossing the polymer above its T-g and avoiding cooling.
CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Kai Jiang, Kangsen Li, Gang Xu, Feng Gong, Xiaoyu Wu, Dongfeng Diao, Likuan Zhu
Summary: This study proposes a new method for hot embossing of glass microfluidic channels, using a high-T-g glass mold insert to create flexible and reliable channels. Experimental results demonstrate that the high-T-g glass has good surface quality and high-temperature resistance, making it a suitable material for hot embossing mold inserts.
CERAMICS INTERNATIONAL
(2021)
Article
Optics
Teun D. G. Nevels, Lieke J. M. Ruijs, Paul van de Meugheuvel, Marc A. Verschuuren, Jaime Gomez Rivas, Mohammad Ramezani
Summary: Substrate conformal imprint lithography (SCIL) technology utilizes composite silicone rubber stamps to fabricate complex 3D nanostructures with sub-10 nm resolution for industrial-scale production. This study proposes a novel optical characterization method using Fourier microscopy to inspect and analyze the critical dimensions of the nanostructures.
Article
Chemistry, Multidisciplinary
Xiaoyang Zhu, Mingyang Liu, Ximeng Qi, Hongke Li, Yuan-Fang Zhang, Zhenghao Li, Zilong Peng, Jianjun Yang, Lei Qian, Quan Xu, Nairui Gou, Jiankang He, Dichen Li, Hongbo Lan
Summary: This study proposes a new fabrication technique for high-performance FTEs with embedded silver mesh, achieving excellent optoelectronic properties, smooth surface, mechanical stability, and environmental adaptability. The fabricated FTE demonstrates superior stability and reliability under diverse tests and harsh working conditions, showcasing its potential for practical applications in flexible transparent heaters.
ADVANCED MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Xiaohua Liu, Ruodong Mo, Kangsen Li, Jun Shen, Jiang Ma, Feng Gong
Summary: A green and low-cost self-aligned multi-ball hot embossing process was developed to create a 3D micro dimple array on metallic glass, demonstrating rapid and economic fabrication of microlens arrays. By controlling the down displacement of balls, micro dimples with different specifications can be achieved.
INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING-GREEN TECHNOLOGY
(2021)
Article
Chemistry, Analytical
Hyeli Kim, Goomin Kwon, Cheolheon Park, Jungmok You, Wook Park
Summary: An anti-counterfeiting tag technology is developed using silver nanowires, which has high visible light transmittance and high infrared emissivity. The tag is observable with a thermal imaging camera and can contain multiple grayscale patterns. This technology provides better protection against counterfeiting.
Article
Nanoscience & Nanotechnology
Tianxun Gong, Haonan Li, Guilin Wang, Fang Guan, Wen Huang, Xiaosheng Zhang
Summary: We propose an anti-scratch flexible surface-enhanced Raman scattering substrate with arrayed nanocavity microstructures fabricated by colloidal lithography. The substrate can protect the inner gold nanoparticles and detect low concentrations of target molecules. It can also detect pesticide residues on the surface of agricultural products through wipe sampling.
Article
Polymer Science
Devesh K. Shukla, Anamika Dey, Ashish Singh, Sandeep N. Tripathi, Sateesh Bonda, Sukdeb Saha, Parameswar Krishnan Iyer, Vivek K. Srivastava, Raksh Vir Jasra
Summary: The use of polymeric thin film as a substrate material in fabrication of flexible OLEDs is well known. In this study, a D-UHMWPE thin film was prepared using a continuous solid state compaction process, and its chemical stability, transparency, and dimensional stability as an OLED substrate material were investigated. The results showed that the D-UHMWPE film exhibited excellent performance in all aspects.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Polymer Science
Kebin Li, Javier Alejandro Hernandez-Castro, Keith Morton, Teodor Veres
Summary: Freestanding polymeric membranes with various structures and sizes were successfully fabricated over large areas via solvent removal of sacrificial scaffolds, enabling different applications.
Article
Acoustics
Shitian Huang, Wenbo Luo, Xiaoyuan Bai, Lu Lv, Xinqiang Pan, Yao Shuai, Chuangui Wu, Wanli Zhang
Summary: This article presents a study on the preparation of highly efficient resonators on flexible PI substrates. By utilizing LN single-crystalline film and Bragg reflector technology, a high K-t(2) effect was achieved. The results demonstrate that the resonant frequency and K-t(2) remain stable when bent at different radii.
IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL
(2021)
Review
Engineering, Multidisciplinary
Subir Datta, Swarup S. Deshmukh, Tuhin Kar, Arjyajyoti Goswami
Summary: Micro-hot embossing (Micro-HE) is a technique used to create precise micro/nanoscale designs on polymeric materials. It is favored for large-scale production of micro-patterns on polymer substrates. However, the lack of simulation models hinders its widespread use.
ENGINEERING RESEARCH EXPRESS
(2023)
