Article
Chemistry, Multidisciplinary
Yuhan Zou, Changpeng Qiao, Jingyu Sun
Summary: In the era of smart electronic devices, the development of miniaturized and versatile power supplies is crucial. Printing is an emerging technique that allows for the fabrication of energy storage systems with customizable mass loading and impressive energy output. This article explores the current state of printable energy storage, discusses challenges in 3D printing electrode design, and provides insights into future developments and practical applications.
Article
Chemistry, Multidisciplinary
Alessandro Silvestri, Alejandro Criado, Fabrizio Poletti, Faxing Wang, Pablo Fanjul-Bolado, Maria B. Gonzalez-Garcia, Clara Garcia-Astrain, Luis M. Liz-Marzan, Xinliang Feng, Chiara Zanardi, Maurizio Prato
Summary: With the advancement of flexible electronics, conductive inks combined with low-cost printing techniques are replacing traditional solid-state technology. Graphene, with its excellent conductivity and zero bandgap, is an ideal candidate for producing such inks. Chemically modifying graphene with active molecules opens up possibilities in the field of responsive conductive inks.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Physical
Hui Li, Shiyi Wang, Xiaoran Dong, Xinrui Ding, Yannan Sun, Heng Tang, Yanjun Lu, Yong Tang, Xiaoyu Wu
Summary: This review highlights the fabrication of triboelectric nanogenerators (TENGs) using ink-based printing methods. Ink-based printing techniques offer advantages such as low cost, high fabrication accuracy, and efficient production compared to traditional methods. The review summarizes different printing methods, ink classifications, and current applications of ink-based printed TENGs, and discusses the existing challenges and prospects for further research.
Article
Nanoscience & Nanotechnology
Cedric P. Ambulo, Michael J. Ford, Kyle Searles, Carmel Majidi, Taylor H. Ware
Summary: Soft actuators that undergo programmable shape change in response to a stimulus have been developed using a 4D-printable composite composed of liquid crystal elastomers matrix and dispersed droplets of eutectic gallium indium alloy. By utilizing deformable alloy droplets instead of rigid conductive fillers, the compliance and shape-morphing properties of the material are preserved. These multifunctional, 4D-printable composites enable mechanically active structures that can be powered with IR light or low DC voltages.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Seoung Young Ryu, Chaesu Kwak, Jieun Kim, Suyeon Kim, Hanbin Cho, Joohyung Lee
Summary: This study develops a 3D-printable conductive metal ink using naturally occurring ingredients, such as bee pollen microparticles and citric acids. The ink exhibits controllable viscoelasticity and allows for lightweight printing while maintaining conductivity. The addition of hexanes with microparticles and acids creates internal macropores within the 3D-printed structure, reducing the density of the product.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Manufacturing
Stephanie Walker, Emma Lingle, Natasha Troxler, Thomas Wallin, Katherine Healy, Yigit Menguc, Joseph R. Davidson
Summary: This study investigates the relationship between curing kinetics and peel testing of printable silicone, demonstrating a negative correlation between cure percent and interfacial adhesion force. These findings are utilized for predicting printed part tensile strength and incorporated into a G-code visualization tool for displaying interfacial adhesion quality based on CAD model geometry and print speed. This research emphasizes the importance of incorporating cure percent into direct ink write path planning to ensure control of the part's final tensile behavior.
ADDITIVE MANUFACTURING
(2021)
Article
Chemistry, Physical
Joao C. Barbosa, Rafael S. Pinto, Loic Hilliou, Maria. M. Silva, Carlos M. Costa, Renato Goncalves, Senentxu Lanceros-Mendez
Summary: The study utilized P(VDF-TrFE-CFE) terpolymer as a new polymer binder to successfully prepare high-performance printable lithium-ion battery cathodes, demonstrating better performance compared to electrodes prepared with traditional P(VDF) binder.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Hossein Goodarzi Hosseinabadi, Arpan Biswas, Anant Bhusal, Ali Yousefinejad, Aastha Lall, Wolfram-Hubertus Zimmermann, Amir K. Miri, Leonid Ionov
Summary: 4D printing is an evolution of 3D printing that allows printed constructs to transform in response to stimuli. In this study, a special ink was synthesized for light-assisted 4D printing, which showed great potential in tissue engineering and actuator applications. Experimental results demonstrated high biocompatibility and biodegradability of the printed constructs.
Article
Polymer Science
Pavel Arsenov, Alexey A. Efimov, Victor V. Ivanov
Summary: Research on generating conductive microstructures for electronics using platinum nanoparticles, synthesizing chemically pure Pt nanoparticles with sizes of 18.2 +/- 9.0 nm by spark discharge method, using ethylene glycol with water as solvent, polyvinylpyrrolidone as adhesive additive and binder, printing narrow and conductive Pt lines on different types of substrates, and demonstrating excellent mechanical flexibility in Pt films on polymer substrates.
Article
Polymer Science
Su Jeong Lee, Ji Min Seok, Jun Hee Lee, Jaejong Lee, Wan Doo Kim, Su A. Park
Summary: The study developed a method to synthesize bio-ink using HA and SA, without chemical crosslinking agents, for 3D bio-printing applications. The printed hydrogels maintained their integrity with no significant shrinkage and exhibited higher cell proliferation rates compared to SA-only bio-ink, showing promise for tissue engineering applications.
Article
Chemistry, Multidisciplinary
Irena Ivanisevic, Marin Kovacic, Marko Zubak, Antonia Ressler, Sara Krivacic, Zvonimir Katancic, Iva Gudan Pavlovic, Petar Kassal
Summary: This work demonstrates the development of a silver nanoparticle-based functional ink for printing on flexible paper and plastic substrates. By improving the wetting properties of the silver nanoparticles, stable printing on different surfaces was achieved, followed by sintering using intense pulsed light. The silver nanoparticle ink shows great potential in the field of flexible electronics.
Article
Biochemistry & Molecular Biology
Ye Liu, Jinjian Huang, Ziyan Xu, Sicheng Li, Yungang Jiang, Gui Wen Qu, Zongan Li, Yun Zhao, Xiuwen Wu, Jianan Ren
Summary: Polyacrylamide/gelatin/silver nanoparticle (PAAm-GelatinAgNPs) ink was designed to improve gelatin-based hydrogels by enhancing their mechanical properties and providing antibacterial capabilities. The ink's shear thinning property enabled the printing of complex 3D scaffolds for potential applications in customized therapy for antimicrobial and anti-UV damage to tissues.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Review
Materials Science, Multidisciplinary
Xinbo Qiu, Xiliang Gong, Xiaoyu Zhang, Weitao Zheng
Summary: Ink-jet printing combines large-area film fabrication with low-cost solution processing to achieve small-sized and closely arranged pixels for high-resolution displays. This study introduces the steps of ink-jet printing, including droplet formation, falling, hitting the substrate, spreading, and pixel formation, and establishes an approximation model to explore the minimum size of a pixel based on a summarization of factors that affect pixel formation.
Article
Chemistry, Multidisciplinary
Ying Zhang, Shuanghao Zheng, Feng Zhou, Xiaoyu Shi, Cong Dong, Pratteek Das, Jiaxin Ma, Kai Wang, Zhong-Shuai Wu
Summary: The study presents a scalable fabrication method for printable lithium ion micro-batteries with high energy density and exceptional flexibility, which can maintain a high capacity retention rate after multiple cycles. By using highly conductive and mechanically stable inks, LIMBs fabricated through multi-layer printing demonstrate stable areal capacity and energy density.
Article
Polymer Science
Rizwan Ul Hassan, Shaheer Mohiuddin Khalil, Saeed Ahmed Khan, Shahzaib Ali, Joonkyeong Moon, Dae-Hyun Cho, Doyoung Byun
Summary: In the field of soft electronics, high-resolution and transparent structures based on various flexible materials constructed via various printing techniques are gaining attention. The electrohydrodynamic (EHD) jet printing technique allows for the fabrication of high-resolution, transparent, and flexible strain sensors. By investigating the effects of voltage, flow rate, nozzle distance, and speed, researchers have achieved a high-resolution printed mesh structure with a gauge factor significantly increased. The plasma treatment enhances adhesion and stability, making this simple printing technique suitable for high-resolution microchannels, 3D printing, and electronic devices.
Article
Nanoscience & Nanotechnology
Zhang Liu, Yalu Zou, Chengang Ji, Xinliang Chen, Guofu Hou, Cong Zhang, Xiangjian Wan, L. Jay Guo, Ying Zhao, Xiaodan Zhang
Summary: High-quality transparent conductive materials are crucial for enhancing charge transfer, light transmission, and reducing production costs in optoelectronic devices. This study explores a novel Zn doping strategy and gas doping technology to fabricate ultrathin Ag-Zn(O) films, significantly improving the broad-spectrum characteristics of OMO films. The combination of ultrathin Ag-Zn(O) layers with MGZO oxide films leads to a high-performance broad-spectrum optoelectronic devices, showing potential for diverse applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Sangeon Lee, L. Jay Guo
Summary: This study investigates the mechanical and electrical characteristics of flexible transparent conductive electrodes under bending conditions and explains their failure mechanisms. The results show that a thin metallic layer can enhance the mechanical stability of the DMD, tune the mechanical properties of the cohesive layer, and improve the electrode fracture resistance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Heyan Wang, Yilei Zhang, Chengang Ji, Cheng Zhang, Zhengang Lu, Yunfei Liu, Zhibo Cao, Jing Yuan, Jiubin Tan, L. Jay Guo
Summary: This study introduces a method for efficient broadband microwave absorption by introducing strongly overlapped multi-cavity resonances, supported by multi-layer structures comprising of alternating graphene/silica pairs and ultrathin silver films. The design guidelines and complementary effects of different graphene layers on the microwave absorption mechanism are proposed for the first time. Experimental results show high absorption efficiency and visible transmittance of the proposed multi-layer structures.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Yong-Bum Park, Changyeong Jeong, L. Jay Guo
Summary: Understanding the electrical and optical properties of ultrathin metal films at sub-10 nm thickness is crucial for their application as transparent conductors. As the thickness approaches a critical value, a rapid change in the properties occurs, influenced by the film's inhomogeneity and size-effect contributions, leading to significant alterations in carrier scattering time, resistivity, optical loss, and transmission. The critical thickness serves as a key engineering metric for determining the maximum theoretical figure-of-merit for transparent conductors using thin metal films.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Benjamin A. Rorem, Tae H. Cho, Nazanin Farjam, Julia D. Lenef, Kira Barton, Neil P. Dasgupta, L. Jay Guo
Summary: We demonstrate the tunable structural color patterns using ALD technology. The color response can be precisely adjusted by tuning the thickness of zinc oxide layer. This method enables uniform and tunable coloration of nonplanar three-dimensional objects.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Optics
Bahareh Badamchi, Wei-Che Hsu, Al-Amin Ahmed Simon, Zong Yin Chi, Jacob Manzi, Maria Mitkova, Alan X. Wang, Harish Subbaraman
Summary: We present a real-time, reusable, and reversible integrated optical sensor for temperature monitoring in harsh environments. The sensor combines the phase change property of chalcogenide glasses with the high-density integration advantages of high index silicon waveguides. Experimental results demonstrate the feasibility of the sensor, showing significant changes in transmission power during phase transition. By integrating multiple compositions of chalcogenide glasses over a silicon waveguide array, real-time temperature evolution can be determined in harsh environments.
Article
Nanoscience & Nanotechnology
Anwesha Saha, Taigao Ma, Haozhu Wang, L. Jay Guo
Summary: Decorative chrome plating is widely used for attractive metal finishings, but it is hazardous to workers and harmful to the environment. To overcome these issues, we propose a multilayer thin film structure that mimics chrome appearance and achieve additional functionalities beyond decoration using a reinforcement learning algorithm. Experimental results show indistinguishable chrome color and validate the effectiveness of the inverse design approach.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Yun Zhang, Wei-Jie Feng, Wenkai Zhu, Xiwei Shan, Wei-Kuan Lin, L. Jay Guo, Tian Li
Summary: We demonstrate a universally applicable coloration strategy for polymer-based radiative cooling materials by nanoimprinting. By modulating light interference with periodic structures on polymer surfaces, specular colors can be induced while maintaining the hemispheric optical responses of radiative cooling polymers. The retrofit strategy is exemplified by four different polymer films with a minimum impact on optical responses compared to the pristine films. The potential roll-to-roll manufacturing empowers a scalable, low-cost, and easy-retrofitting solution for colored radiative cooling films.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Biomedical
Jennie J. Paik, Boonjae Jang, Sunghyun Nam, L. Jay Guo
Summary: This study presents a physically crosslinked poly(vinyl alcohol) (PVA)-based hydrogel that acts as a transparent strain-sensing skin adhesive for motion monitoring. By incorporating Zn2+ into the ice-templated PVA gel, a dense amorphous structure is observed, allowing the material to stretch up to 800% strain. Fabrication in a binary glycerol:water solvent results in electrical resistance in the k omega range, a gauge factor of 0.84, and ionic conductivity on the scale of 10(-4) S cm(-1), making it a promising low-cost candidate for stretchable electronic materials. The study also investigates the relationship between improved electrical performance and polymer-polymer interactions using spectroscopic techniques.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Wei-Jie Feng, Chengang Ji, L. Jay Guo
Summary: A full solution-based method is presented for fabricating multilayer thin film stacks for structural color applications, avoiding the need for high vacuum processes. Copper/silicon dioxide/copper (Cu/SiO2/Cu) and copper/titanium dioxide/copper (Cu/TiO2/Cu) are chosen as the model system due to their simple structure and tunable color. A systematic investigation is conducted to ensure good film quality and compatibility with previous layers. The manipulation of dielectric thickness and top Cu morphology on different substrates allows for the achievement of both primary and secondary colors.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Wei-Jie Feng, Yian Cheng, L. Jay Guo
Summary: This paper presents a new approach to understanding the spectral behavior of a Fabry-Perot-type trilayer stack for subtractive structural color using temporal coupled mode analysis. The cavity-based analysis can accurately fit reflection spectra and predict color chromaticity, even without considering material dispersion. The research shows that maximizing both absorptive and radiative decay rates, while matching them, is the key to producing the most chromatic color.
Article
Chemistry, Multidisciplinary
Jacob Manzi, Ariel E. E. Weltner, Tony Varghese, Nicholas McKibben, Mia Busuladzic-Begic, David Estrada, Harish Subbaraman
Summary: This paper demonstrates the use of plasma-jet printing (PJP) to deposit thermoelectric nanoflakes onto flexible substrates at room temperature, with substantial improvements in material adhesion and flexibility observed. The printed films exhibit electrical conductivity of 2.5 x 10(3) S m(-1) and a power factor of 70 mu W m(-1) K-2 at room temperature. This advancement in plasma jet printing promotes not only the development of energy harvesting but also large-scale flexible electronics and sensors for space and commercial applications.
Review
Nanoscience & Nanotechnology
Danyan Wang, Zeyang Liu, Haozhu Wang, Moxin Li, L. Jay Guo, Cheng Zhang
Summary: Recent years have seen rapid development in the field of structural coloration, which is generated from the interaction of nanostructures with light. Compared to traditional color generation methods, structural coloration offers unique advantages in terms of spatial resolution, operational stability, environmental friendliness, and multiple functionality. This review discusses the recent developments in structural coloration based on layered thin films and optical metasurfaces. It covers the fundamentals of color science, physical mechanisms for structural color generation, optimization methods for efficient structure parameter searching, fabrication techniques for large-scale and low-cost manufacturing, device designs for dynamic displaying, and diverse applications in printing, sensing, and advanced photovoltaics.
Review
Chemistry, Multidisciplinary
Shengjun Zhou, Xiaoyu Zhao, Peng Du, Ziqi Zhang, Xu Liu, Sheng Liu, L. Jay Guo
Summary: This review introduces the application of patterned sapphire substrates (PSS) in III-nitride emitters and summarizes the fabrication methods and nanoscale patterned structure definitions of PSS. Research shows that PSS can reduce the threading dislocation density (TDD) in epilayers and enhance the light extraction efficiency. The structural parameters of PSS also have an impact on LED performances. Finally, the challenges and potential prospects of PSS in future LED development are proposed.
Article
Materials Science, Multidisciplinary
Xiao Han, Ziyang Fan, Zeyang Liu, Chao Li, L. Jay Guo
Summary: A systematic method based on neural networks is proposed in this article to address the design issue of metasurface structures capable of filtering light of a specific wavelength range in the visible band. This method is faster compared to traditional methods and can generate structures with spectra resembling the desired ones.