Article
Multidisciplinary Sciences
Jong Bin Kim, Changju Chae, Sang Hoon Han, Su Yeon Lee, Shin-Hyun Kim
Summary: The study introduces a method of directly writing structural-color graphics with high brightness and saturation using colloidal inks, by optimizing the volume fraction to simultaneously provide pronounced coloration and satisfactory printing rheology, offering unprecedented levels of controllability and versatility.
Article
Polymer Science
Shu Yang, Hongming Xiang, Yingwen Wang, Kaikai Chen, Weihong Gao
Summary: Monodispersed polystyrene particles are deposited on textile fabrics using a gravity sedimentation method, forming a photonic crystal with iridescent structural color. The fabric substrate, including raw materials, base color, and fabric weave, significantly affects the structural color of the photonic crystals. The addition of silk fibroin to the polystyrene microsphere solution improves the color fastness of the structural color on the fabric surface.
Article
Chemistry, Multidisciplinary
Qilin He, Harikrishnan Vijayamohanan, Jie Li, Timothy M. Swager
Summary: Photonic Janus particles with a sphere fused to a cone are created through the phase separation of dendronized brush block copolymers and poly(4-vinylpyridine)-r-polystyrene. The particles exhibit tunable structural colors by varying the molecular weight of the copolymers and can be surface-modified for multifunctionality. A real-time magnetic control and electrostatic immobilization of charged biomolecules are achieved, enabling potential applications in biosensing. A new photonic sensor for detecting Salmonella is developed using antibody-modified photonic Janus particles, with the angle-dependent structural color playing a key role in the sensing mechanism.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Hailong Liu, Hongtao Wang, Hao Wang, Jie Deng, Qifeng Ruan, Wang Zhang, Omar A. M. Abdelraouf, Norman Soo Seng Ang, Zhaogang Dong, Joel K. W. Yang, Hong Liu
Summary: In this study, a new strategy was devised to generate high-order photonic cavity modes upon side illumination on woodpile photonic crystals, enabling one-step printing of 3D photonic structural colors. The resulting colors are vivid, with a wide spectral range and large viewing angles, and do not require postprocessing or subwavelength features.
Article
Engineering, Manufacturing
Edvinas Skliutas, Danielius Samsonas, Arunas Ciburys, Lukas Kontenis, Darius Gailevicius, Jonas Berzins, Donatas Narbutas, Vytautas Jukna, Mikas Vengris, Saulius Juodkazis, Mangirdas Malinauskas
Summary: Multiphoton photopolymerisation (MPP), also known as 3D nanoprinting, was studied using a wavelength-tunable femtosecond laser. The influence of wavelength on the dynamic fabrication window (DFW) and the control over voxel aspect ratio were investigated. The results show that optimizing the wavelength can significantly improve the efficiency of 3D nanoprinting in various applications.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Nanoscience & Nanotechnology
Han Zhu, Bo Wu, Mingsheng Gao, Feng Ren, Wei Qin, Saulius Juodkazis, Feng Chen
Summary: This paper proposes a new method for fabricating periodic plasmonic nanostructure patterns and successfully applies it to glass material. By utilizing the plasmonic interaction of femtosecond laser, the shape of noble metal nanoparticles injected into the glass is successfully changed, forming nanowire-like nanoparticle assemblies. This method can fabricate wires with designed patterns at the nanoscale. By burying plasmonic gratings in the subsurface regions of glass, applications such as linear dichroism response and structural color are achieved.
Article
Nanoscience & Nanotechnology
Yue Wu, Jianjin Nan, Jie Ren, Zhipeng Meng, Shufen Zhang, Suli Wu
Summary: This study investigates the effect of incident light polarization on the reflection wavelength of photonic crystals constructed with ZnS nanospheres. It demonstrates a significant blue shift in the reflection peak when the incident light changes polarization, with the blue shift increasing with the diameter of the ZnS nanospheres used for construction.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Fantao Meng, Benzhi Ju, Zhenzhi Wang, Ronghui Han, Yuang Zhang, Shufen Zhang, Ping Wu, Bingtao Tang
Summary: We present a new synthetic strategy that combines N-carboxyanhydride (NCA) chemistry and photonic crystals for the fabrication of polypeptide structural color films. Through surface-initiated ring-opening polymerization, a di-NCA derivative of L-cystine (Cys) is utilized to replicate functionalized colloidal crystal templates and create freestanding P(Cys) films with adjustable structural color. The feasibility of producing patterned polypeptide photonic films is demonstrated through template microfabrication. The introduction of L-glutamate (Glu) components enables the P(Cys-co-Glu) copolypeptide films to exhibit visual color responsiveness to pH changes. Additionally, the polypeptide photonic films possess on-demand degradability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Applied
Xinyang Li, Xiaohui Liang, Xiaohui Wang, Yichen LI, Guojin Liu, Mingan Hu, Lan Zhou, Jianzhong Shao
Summary: This study presents a method for the rapid preparation of liquid photonic crystals (LPCs) using rotary evaporation and a three-dimensional barrier based on charge repulsion and space obstruction. The prepared LPCs exhibited excellent structural colors and dynamic reversibility, showing promising potential for large-scale production of structurally colored textiles.
Article
Chemistry, Multidisciplinary
Seungmin Nam, Dahee Wang, Chaehyun Kwon, Sang Hyun Han, Su Seok Choi
Summary: Structural color can be produced by nanoperiodic dielectric structures using soft materials, and stretchable chiral photonic elastomers (CPEs) can self-organize into a helical nanostructure, with the chiral nanostructural color controlled by stretching. This study presents stretchable CPEs with simultaneous multicolor control, including electrical control, and demonstrates various device applications such as multiarrayed color binning and chameleon-like photonic e-skin. The ability to control the separation of biomimetic multicolors in stretchable photonic systems improves the functionality of potential photonic applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Liliana Moscardi, Guglielmo Lanzani, Giuseppe M. Paterno, Francesco Scotognella
Summary: This work summarizes the theoretical tools and fabrication techniques used for designing the optical properties of responsive PhCs, with a particular focus on electrochromic devices.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Yun Liu, Qingsong Fan, Guanghao Zhu, Gongpu Shi, Huiru Ma, Wei Li, Tianlong Wu, Jitao Chen, Yadong Yin, Jianguo Guan
Summary: This research achieves separate, continuous, and reversible modulation of structural color brightness and hue using dual-responsive photonic nanochains. Color brightness is controlled by a magnetic field, while color hue is controlled by temperature, advancing the development of responsive chromic materials.
MATERIALS HORIZONS
(2021)
Article
Polymer Science
Naiyu Liu, Zhikun Zheng, Dingshan Yu, Wei Hong, Hailu Liu, Xudong Chen
Summary: A facile method for building responsive photonic crystal patterns was developed, utilizing commercially printed patterns as masks to induce invisible patterns through wetting. The masked areas exhibit strong structural colors while the unmasked areas remain transparent, providing a unique and reversible wetting feature. This programmable printing technique is expected to be an environmentally friendly approach for scalable invisible optical anti-counterfeiting technology.
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
Ahmet F. Demiroers, Erik Poloni, Maddalena Chiesa, Fabio L. Bargardi, Marco R. Binelli, Wilhelm Woigk, Lucas D. C. de Castro, Nicole Kleger, Fergal B. Coulter, Alba Sicher, Henning Galinski, Frank Scheffold, Andre R. Studart
Summary: In this study, a 3D printing platform for the assembly of colloidal particles of silica and carbon with programmable structural color is proposed. The printing parameters and ink composition are optimized to achieve objects with tunable structural color. Multimaterial printing is used to create complex-shaped objects with multiple structural colors, offering a new approach for mimicking structural color in natural systems.
NATURE COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Denver P. Linklater, Phuc H. Le, Arturo Aburto-Medina, Russell J. Crawford, Shane Maclaughlin, Saulius Juodkazis, Elena P. Ivanova
Summary: A biomimetic nanostructured surface inspired by dragonfly wings was developed, which exhibited antifungal and fungicidal properties by physically rupturing attaching fungal spores upon contact. The hydrophilic nature of the nanostructured surface was found to be crucial for its antifungal activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Optics
Peichao Wu, Xiaowen Cao, Wubo Chu, Zhihao Chen, Hongbing Yuan, Rujia Wang, Songbai Yao, Saulius Juodkazis, Wenwu Zhang
Summary: With the rapid development of micro-optical applications, there is an increasing demand for micro-optical elements that can be made with minimal processing steps. This study reports on the fabrication of diamond Fresnel zone plates (FZPs) by femtosecond laser direct writing, which provide a compact solution for focusing and imaging. The fabricated FZPs showed well-defined geometry and excellent focusing and imaging ability, making them suitable for various potential applications.
Article
Chemistry, Multidisciplinary
Giedrius Balcas, Mangirdas Malinauskas, Maria Farsari, Saulius Juodkazis
Summary: This article provides an overview of a recent advancement in optical 3D printing, where crosslinkable materials and nanomaterial fillers are polymerized and guided to form final structures and new composites through high temperature annealing (HTA). By using ultrafast laser direct writing, 3D nano/micro-structures are defined and their precursor composition is tailored for subsequent tunability of final properties during the HTA process at temperatures between 750-1500 degrees C. This method takes advantage of efficient pyrolysis and calcination, facilitated by the large surface-to-volume ratio conditions, to enable chemical exchange between glass/ceramic and surrounding materials.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jaworski C. C. Capricho, Tzu-Ying Liao, Boon Xian Chai, Ahmed Al-Qatatsheh, Jitraporn (Pimm) Vongsvivut, Peter Kingshott, Saulius Juodkazis, Bronwyn Louise Fox, Nishar Hameed
Summary: This study demonstrates the potential of macroradical epoxies as surface coating materials, with the use of magnets during polymerization. The magnetically oriented and stable radicals in the polymer backbone render the coatings antimicrobial.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Optics
Yi-shi Xu, Zhen-ze Li, Zi-han Wang, Hong Xia, Yue-feng Liu, Saulius Juodkazis, Qi-dai Chen, Lei Wang
Summary: Femtosecond laser-induced deep-subwavelength structures have gained attention as a nanoscale surface texturization technique. Non-reciprocal writing via tailored optical far-field exposure is demonstrated, achieving continuous manipulation of ripple period on indium tin oxide (ITO) film. A full electromagnetic model is developed to explain the formation of ripples and the asymmetry of focal spot determines the non-reciprocity. This non-reciprocal writing technique offers new possibilities for precise and controllable nanoscale surface texturing.
Article
Optics
Yi-Shi Xu, Zhen-Ze Li, Hua Fan, Yue-Feng Liu, Hong Xia, Saulius Juodkazis, Qi-Dai Chen, Lei Wang
Summary: This study demonstrates the formation mechanism of laser-induced periodic surface structures (LIPSS) from a nanohole seed structure to high-spatial-frequency LIPSS using a tightly focused and rectangular-shaped laser beam with different shape-polarization orientations. A quantitative match between modeling and experiment is achieved by forming LIPSS based on light intensity distribution. The results reveal the step-like and deterministic process of LIPSS evolution and the dominant structural near-field enhancement on the ripple formation.
Article
Chemistry, Physical
Jovan Maksimovic, Haoran Mu, Molong Han, Daniel Smith, Tomas Katkus, Vijayakumar Anand, Yoshiaki Nishijima, Soon Hock Ng, Saulius Juodkazis
Summary: Ultra-short 230 fs laser pulses of 515 nm wavelength were focused to 700 nm spots on a Cr etch mask, creating similar to 400 nm nano-holes. The ablation threshold was found to be 2.3 nJ/pulse, and lower energies produced nano-disks while higher energies produced nano-rings. The controlled alloying of Si and Cr on large surface areas with sub-diffraction resolution was achieved using subtle sub-1 nJ pulse energy control.
Article
Chemistry, Multidisciplinary
Charitha Weerasuriya, Soon Hock Ng, William Woods, Tom Johnstone, Pranciskus Vitta, Laila Hugrass, Saulius Juodkazis
Summary: Color plays a significant role in human activities and affects the circadian cycle and decision making process. The subjective nature of color perception makes it vital to study human judgment under different colored illuminations. This study developed necessary instruments to control LED lamps with red, green, blue, and amber colors for MEG brain scans. A software was also developed to generate various colors and predefined white light combinations using RGBA color pallets. The feasibility of using LED lamps with MEG brain scanners has been validated for biomedical and psychological experiments.
APPLIED SCIENCES-BASEL
(2023)
Article
Optics
Amudhavel Jayavel, Shivasubramanian Gopinath, Praveen Periyasamy Angamuthu, Francis Gracy Arockiaraj, Andrei Bleahu, Agnes Pristy Ignatius Xavier, Daniel Smith, Molong Han, Ivan Slobozhan, Soon Hock Ng, Tomas Katkus, Aravind Simon John Francis Rajeswary, Rajesh Sharma, Saulius Juodkazis, Vijayakumar Anand
Summary: Pattern recognition techniques are essential for incoherent linear shift-invariant systems. The point spread function (PSF) samples object information in a camera system, which can be used for deblurring the object image. Deep learning-based image classification for computer vision applications has gained attention, and the quality of images plays a crucial role in classification accuracy. In this study, the Lucy-Richardson-Rosen algorithm (LR(2)A) was implemented to deblur images recorded with spatio-spectral aberrations, and it showed superior performance compared to other techniques. The LR(2)A was also applied to improve the image classification performances of deep convolutional neural networks.
Article
Optics
Daniel Smith, Soon Hock Ng, Amanda Tang, Tomas Katkus, Daniel Moraru, Saulius Juodkazis
Summary: Ultra-short laser pulses were used to laser ablate the surface of crystalline sapphire at high intensity. Annealing at high temperature led to surface reconstruction and reduction of surface roughness. The 3D shape of a micro-lens was not altered after annealing.
Article
Physics, Applied
Ran-Ran Xie, Han Zhu, Ruofei Xing, Lingrui Chu, Zhuoqun Wang, Ruyi Xia, Wenxiao Zhao, Yuechen Jia, Yanxue Chen, Saulius Juodkazis, Feng Chen
Summary: This study investigates the modulation of crystallinity and morphology of vanadium dioxide thin film using femtosecond laser direct writing. The research explores the impact of femtosecond laser conditions on the evolution of nano/micro-structures and demonstrates the ability to draw a multi-color image on a VO2 thin film. This work provides a new method for producing complex integrated multi-functional devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Subham Ranjan, Meguya Ryu, Ryota Morioka, Shuji Kamegaki, Soon Hock Ng, Daniel Smith, Jitraporn Vongsvivut, Mark J. Tobin, Saulius Juodkazis, Junko Morikawa, Satoshi Takamizawa
Summary: A unique scissor-like two-directional ferroelastic deformation was achieved in organic crystals, shedding light on the understanding of multidirectional deformations in organic compounds. The study also revealed a correlation between the anisotropic structural arrangement and the difference in thermal diffusivity and mechanical behavior.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Hsin-Hui Huang, Saulius Juodkazis, Eugene G. Gamaly, Vladimir T. Tikhonchuk, Koji Hatanaka
Summary: This study analyzes the processes produced by the interaction of two subsequent ultra-short laser pulses with a water flow, and finds that this interaction generates strong THz pulses and enhanced X-ray emission. It is demonstrated that these emissions are produced by the interaction of a main laser pulse with liquid water ejected from the surface by a pre-pulse, resulting in the acceleration of energetic electron beams. This scheme enables efficient energy conversion in THz pulses.
Article
Materials Science, Multidisciplinary
Shuji Kamegaki, Daniel Smith, Meguya Ryu, Soon Hock Ng, Hsin-Hui Huang, Pegah Maasoumi, Jitraporn Vongsvivut, Daniel Moraru, Tomas Katkus, Saulius Juodkazis, Junko Morikawa
Summary: A four-polarisation camera was used to map the absorbance of olivine micro-grains before and after high-temperature annealing. It was found that high-temperature annealing caused magnetization of olivine xenoliths. Different operating modes of the polariscope were used to validate the three-point fit method for analyzing the birefringence and absorbance of the samples in transmission and reflection modes.
Article
Engineering, Manufacturing
Edvinas Skliutas, Danielius Samsonas, Arunas Ciburys, Lukas Kontenis, Darius Gailevicius, Jonas Berzins, Donatas Narbutas, Vytautas Jukna, Mikas Vengris, Saulius Juodkazis, Mangirdas Malinauskas
Summary: Multiphoton photopolymerisation (MPP), also known as 3D nanoprinting, was studied using a wavelength-tunable femtosecond laser. The influence of wavelength on the dynamic fabrication window (DFW) and the control over voxel aspect ratio were investigated. The results show that optimizing the wavelength can significantly improve the efficiency of 3D nanoprinting in various applications.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
