Article
Optics
Congling Liang, Liangui Deng, Qi Dai, Zile Li, Guoxing Zheng, Zhiqiang Guan, Gongfa Li
Summary: Nanostructured metasurfaces have been extensively studied for structural-color nanoprinting and holography applications. A new approach of merging these functionalities together has been proposed to enhance the information capacity and functionality of metasurface devices. By employing a single-celled approach, high-density multifunctional metasurfaces have been designed to manipulate light spectra and geometric phase simultaneously for both nanoprinting and holography. Such metasurfaces have potential applications in high-density information storage, optical information encryption, multi-channel image displays, and more.
Article
Optics
Kuixian Chen, Zhiqiang Guan, Zile Li, Yan Yang, Zhixue He, Shaohua Yu, Guoxing Zheng
Summary: In this study, computer-generated holographic nanoprinting using Pancharatnam-Berry phase modulation is demonstrated. This technique combines the advantages of both spectrum-modulated and polarization-modulated nanoprinting while avoiding their disadvantages. It enables single-channel/multichannel/color nanoprinting in a holography way, with unique characteristics such as incoherent light illumination, arbitrary brightness modulation, polarization insensitivity, and zero-dispersion. The holographic interference pattern generation further enhances the safety of information delivery.
LASER & PHOTONICS REVIEWS
(2023)
Article
Multidisciplinary Sciences
Bingyan Liu, Shirong Liu, Vasanthan Devaraj, Yuxiang Yin, Yueqi Zhang, Jingui Ai, Yaochen Han, Jicheng Feng
Summary: The researchers demonstrate a fast 3D nanoprinting technique for manufacturing nanostructured arrays of multiple materials and geometries over millimeter-scale areas by manipulating electric and flow fields. This technique has exciting prospects in the fields of nanophotonics and nanoelectronics.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Wanyi Li, Xianzhi Zeng, Yajing Dong, Ziwei Feng, Hongjing Wen, Qin Chen, Long Wen, Shichao Song, Xiangping Li, Yaoyu Cao
Summary: This article presents a method for achieving color patterning in three-dimensional metasurfaces using laser nanoprinting technology. Through laser-induced photoreduction of silver ions, nanoparticles are anchored in a pH-responsive smart hydrogel matrix, and a wide range of color regulation is achieved by adjusting the nanoparticle spacing. This method is important for applications such as active spectral filtering, information encryption, security tagging, and biological colorimetric sensing.
News Item
Optics
Paul V. Braun, Mark L. Brongersma
Summary: A two-step absorption process has enabled nanoscale 3D printing using a low-cost, low-power continuous-wave laser diode, potentially leading to significant cost reductions in 3D nanoprinting after 20 years of relying on expensive pulsed lasers for two-photon absorption.
Article
Chemistry, Multidisciplinary
Alistair Speidel, Ivan Bisterov, Adam Thomas Clare
Summary: Counterfeit parts are a serious concern for manufacturers and end users, and preventing counterfeiting is of great importance. This article presents a rapid electrochemical jet engraving routine for encoding materials at lengths that can be imaged with a smartphone, in order to prevent counterfeiting. The encoded structures are stable and can withstand high temperatures, and individual identification can be achieved through rapid image recognition.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Shao-Feng Liu, Zheng-Wei Hou, Linhan Lin, Zhengcao Li, Hong-Bo Sun
Summary: 3D laser nanoprinting revolutionizes manufacturing by allowing maskless fabrication of 3D nanostructures at a resolution beyond the optical diffraction limit. It offers printed structures with unique physical, chemical, or mechanical properties not seen at the macro scale. However, its reliance on photopolymerization limits its usability to certain materials and functionalities. The ability to print diverse functional materials and the development of laser nanoprinting techniques beyond photopolymerization open up exciting new applications in nanophotonics and microelectronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Shan Wu, Ding Zhao, Min Qiu
Summary: This research demonstrates the potential of developing electron-beam lithography (EBL) into a controllable 3D nanoprinting technology using ice resists, and flexible control of printed layer thickness can be achieved through mixed ice resists. Additionally, the prospect of printing metals is promising by employing organometallic compounds as ice resists.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Multidisciplinary Sciences
Wooik Jung, Yoon-Ho Jung, Peter V. Pikhitsa, Jicheng Feng, Younghwan Yang, Minkyung Kim, Hao-Yuan Tsai, Takuo Tanaka, Jooyeon Shin, Kwang-Yeong Kim, Hoseop Choi, Junsuk Rho, Mansoo Choi
Summary: Three-dimensional (3D) printing has revolutionized manufacturing processes in various fields. A new technique allows direct printing of metal nanostructures with flexible geometries and feature sizes down to hundreds of nanometres, using various materials.
Article
Engineering, Manufacturing
Yoon-Ho Jung, Peter Pikhitsa, Shirong Liu, Wooik Jung, Jooyeon Shin, Bingyan Liu, Yaochen Han, Kwang-Yeong Kim, Mansoo Choi, Jicheng Feng
Summary: This study uncovers the physics of 3D nanoprinting using charged aerosols, highlighting the key parameters of charge concentration in the floating layer and charge density on the dielectric surface. The research provides new possibilities for controlling and programming 3D nanoprinting via charged aerosols.
ADDITIVE MANUFACTURING
(2021)
Article
Nanoscience & Nanotechnology
Pei Shi, Eiji Miwa, Jialei He, Miki Sakai, Takahiro Seki, Yukikazu Takeoka
Summary: Organisms that alter body color change according to environmental variations and stimuli by combining chromatophores. Inspired by this, bioinspired composite elastomers exhibit various color changes due to pigment color, structural color, and background color changes. The structural colors in the elastomers come from fine silica particles forming colloidal crystals, and can reversibly change as the material elongates. Additionally, the introduction of photochromic dyes allows for reversible color changes depending on the wavelength of irradiated light.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Multidisciplinary Sciences
Thomas G. Pattison, Shuo Wang, Robert D. Miller, Gang-yu Liu, Greg G. Qiao
Summary: Macroscale additive manufacturing has developed significantly, but nanoscale formation of polymeric features from the bottom-up is not yet achieved. This study demonstrates a rapid crosslinking technique using an atomic force microscope, enabling fast curing of crosslinkable polymers in the presence of catalysts.
NATURE COMMUNICATIONS
(2022)
Article
Engineering, Manufacturing
Jooyeon Shin, Yoon-Ho Jung, Peter V. Pikhitsa, Changnyeong Hur, Wonjin Cho, Wooik Jung, Mansoo Choi
Summary: This study demonstrates an advanced 3D nanoprinting technique based on charged aerosol jet, which enables the programming of voxel size of 3D nanostructures by replacing the mask. The researchers also show that voxel size can be further altered by controlling the distance and hole size of the mask, and desired shapes of 3D nanostructures can be printed by moving the substrate in three dimensions. The study also presents theoretical approaches to predict the geometries and voxel sizes of 3D nanostructures.
ADDITIVE MANUFACTURING
(2022)
Article
Computer Science, Information Systems
Amita Singha, Muhammad Ahsan Ullah
Summary: This paper presents a digital watermarking technique for ensuring security to an audio signal, developed using discrete wavelet transform (DWT) and singular value decomposition (SVD). The technique incorporates multi-level DWT and multiple images with different sizes as watermarks, distributing the watermark signals' energy throughout the entire host signal. The technique demonstrates robustness with a PSNR of 196.8105 dB and an NCC over 0.9 in experimental results.
JOURNAL OF KING SAUD UNIVERSITY-COMPUTER AND INFORMATION SCIENCES
(2022)
Article
Multidisciplinary Sciences
Wang Zhang, Hao Wang, Hongtao Wang, John You En Chan, Hailong Liu, Biao Zhang, Yuan-Fang Zhang, Komal Agarwal, Xiaolong Yang, Anupama Sargur Ranganath, Hong Yee Low, Qi Ge, Joel K. W. Yang
Summary: Researchers have successfully achieved high-resolution printing and shape memory effects in SMP nanostructures through 4D printing, which can be used for temperature-sensitive labels, information hiding for anti-counterfeiting, and tunable photonic devices.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Zejing Wang, Chenjie Dai, Jian Zhang, Dandan Wang, Yangyang Shi, Xinyu Wang, Guoxing Zheng, Xuefeng Zhang, Zhongyang Li
Summary: In this study, a multiplexing imaging tunable strategy based on stepwise metal-hydrogel-metal (MHM) nanocavities is explored, enabling dynamic switchable red-green-blue multichannel nanoprinting in real-time. This new approach holds promise for applications in tunable imaging display/storage/encryption, humidity optical sensors, and next-generation dynamic augmented reality technology.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jin Tao, Quan You, Zile Li, Ming Luo, Zichen Liu, Ying Qiu, Yan Yang, Yongquan Zeng, Zhixue He, Xi Xiao, Guoxing Zheng, Shaohua Yu
Summary: An ultracompact full-duplex metabroadcasting communication system is designed and demonstrated, showcasing high performance and small size. By combining optical wireless-broadcasting communication and metasurfaces, it opens up a new avenue for enhancing the quality of optical wireless broadcasting communications.
ADVANCED MATERIALS
(2022)
Article
Optics
Kuixian Chen, Zhiqiang Guan, Zile Li, Yan Yang, Zhixue He, Shaohua Yu, Guoxing Zheng
Summary: In this study, computer-generated holographic nanoprinting using Pancharatnam-Berry phase modulation is demonstrated. This technique combines the advantages of both spectrum-modulated and polarization-modulated nanoprinting while avoiding their disadvantages. It enables single-channel/multichannel/color nanoprinting in a holography way, with unique characteristics such as incoherent light illumination, arbitrary brightness modulation, polarization insensitivity, and zero-dispersion. The holographic interference pattern generation further enhances the safety of information delivery.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Jiaxin Li, Zhiqiang Guan, Hong-Chao Liu, Zhixue He, Zile Li, Shaohua Yu, Guoxing Zheng
Summary: This study proposes a cryptographic system based on indirect-observation decryption, which can decode hidden information by combining special decryption devices and metasurface-transformed ciphertext, ensuring high confidentiality. In addition, an anti-counterfeiting label is designed to ensure information authenticity. This work bridges the gap between metasurfaces and other light-manipulation elements, nanoprint, hologram, and amplitude- and phase-modulated information, providing a new approach for constructing cryptographic systems and promoting the exploration of optical multiplexing and steganography.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Naixuan Zhao, Zile Li, Guodong Zhu, Jiaxin Li, Liangui Deng, Qi Dai, Weiguo Zhang, Zhixue He, Guoxing Zheng
Summary: This study proposes an ultracompact metasurface design that utilizes a single-cell strategy to establish three independent information channels for simultaneous watermarked structural-color nanoprinting and holographic imaging. The metasurface combines dual-channel spectrum manipulation and single-channel phase manipulation by introducing orientation degeneracy, enabling the generation of a structural-color nanoprinting image with polarization-dependent watermarks and a holographic image in different decoded environments.
Article
Optics
Kuixian Chen, Jiaxin LI, Guodong Zhu, Weiguo Zhang, Zhixue He, Guoxing Zheng, Zile LI
Summary: Researchers proposed a phase-assisted design paradigm called Bessel metasurface for angular multiplexing nanoprinting, which enables encoding target images into desired observation angles. The design strategy has the advantages of ultracompactness and easy fabrication, making it attractive for practical applications.
Article
Chemistry, Multidisciplinary
Xiao Liang, Zhou Zhou, Zile Li, Jiaxin Li, Chang Peng, Hao Cui, Kai Wei, Zhixue He, Shaohua Yu, Guoxing Zheng
Summary: A minimalist strategy for designing multiplexed differentiators is proposed using a Malus metasurface consisting of single-sized nanostructures, enabling 1st and 2nd order differentiations. The proposed meta-differentiator exhibits excellent differential-computation performance and can be used for simultaneous outline detection and edge positioning of objects. It opens up possibilities for all-optical multiplexed computing meta-devices and can be applied in advanced biological imaging, defect detection, and pattern recognition.
ADVANCED MATERIALS
(2023)
Article
Optics
Kuixian Chen, Zile Li, Zhiqiang Guan, Jiaxin Li, Qi Dai, Rao Fu, Liangui Deng, Hao Cui, Guoxing Zheng
Summary: Due to its unprecedented wavefront shaping capability, metasurface has demonstrated outstanding performance in various applications, especially in printing and holography. Recently, these two functions have been combined into a single metasurface chip to achieve an expanded capability. Inspired by the Jacobi-Anger expansion, a phase-assisted paradigm called Bessel metasurface has been proposed for simultaneous printing and holography. The Bessel metasurface, with its compactness, easy fabrication, convenient observation, and liberation of the illumination conditions, is expected to have promising prospects in practical applications.
Article
Optics
Yichen Zeng, Song Han, Guoxing Zheng, Zhongyang Li, Yongquan Zeng
Summary: In this work, a zero-index material (ZIM) is proposed to control the in-plane emission of planar random optical modes while maintaining the intrinsic disordered features. By enclosing a disordered structure with a ZIM based on all-dielectric photonic crystal (PhC), broadband emission directionality improvement can be obtained. The method is robust and can be effectively applied to different structural parameters of the disordered medium.
Article
Nanoscience & Nanotechnology
Jin Tao, Quan You, Chao Yang, Zile Li, Liangui Deng, Mian Wu, Ming Luo, Lin Wu, Chao Li, Zichen Liu, Zhixue He, Xi Xiao, Guoxing Zheng, Shaohua Yu
Summary: A bidirectional multichannel optical wireless system enabled by a polarization independent metasurface with coherent modulation and reception is designed and experimentally demonstrated in this study. The system provides exclusive 100 Gbps coherent optical signal transmission to multiusers with their own wavelengths, at a distance of 2 meters and a field of view of 20 degrees x 20 degrees. Additionally, the system supports a 900 Gbps optical broadcasting system. This metasurface assisted optical wireless communication system combines optical coherent communication techniques with the concept of metasurface, reducing system complexity and cost while achieving high transmission capacity and opening new possibilities for high performance optical wireless communications.
Article
Nanoscience & Nanotechnology
Xianjing Huang, Dong Zhu, Zhou Zhou, Kuixian Chen, Guoxing Zheng, Peng Chen, Yan-Qing Lu, Zile Li
Summary: Traditional holographic encryption methods based on the combination of gratings and liquid crystals (LCs) cannot provide full security due to the lack of strict requirements for decoding methods. In this paper, a simple but effective encryption method is proposed, and a four-in-one hologram based on photopatterned LCs is designed. The most important encrypted image can only be displayed when the four LC holograms in the same group are spliced into a whole according to the designed order. Our encryption scheme has the advantages of simple design, high security, and low crosstalk, with great potential in the fields of information hiding and image encryption.
Article
Nanoscience & Nanotechnology
Jiaxin Li, Zhou Zhou, Zile Li, Guoxing Zheng
Summary: This study explores the design degree of freedom of metasurfaces by combining the dual-wavelength polarizer and the orientation degeneracy of the Malus law. It demonstrates the simultaneous color control and phase manipulation using single-sized nanostructures. The integration of pseudo-color nanoprinting and holographic image display enhances the functionalities of metasurfaces.
FRONTIERS IN NANOTECHNOLOGY
(2022)
