Review
Materials Science, Multidisciplinary
Qing Yang, Minjing Li, Hao Bian, Jiale Yong, Fan Zhang, Xun Hou, Feng Chen
Summary: Natural compound eyes have inspired the design of advanced imaging devices, while artificial compound eyes with microlens arrays have attracted significant research interest due to their advantages in modern micro-optical systems. After over a decade of intense research, various successful approaches have been developed to fabricate microlens arrays with high surface morphology and excellent optical performance.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Materials Science, Multidisciplinary
Yueqi Zhai, Jiaqi Niu, Jingquan Liu, Bin Yang
Summary: A large-scale artificial compound eye with a wide field of view and high sensitivity was fabricated using a low-cost strategy. The collaboration of the compound eye and CMOS sensor enables capturing multiple images of human organs. This micro-based imaging system has significant potential in medical applications and drone navigation.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Nanoscience & Nanotechnology
Jiang Li, Wenjun Wang, Ruixiang Zhu, Yuxiang Huang
Summary: In this study, a method for efficiently manufacturing a large area artificial compound eye using photolithography and inkjet printing was proposed. By adding micropillars, superhydrophobicity of microlens was achieved without affecting its optical performance. Tuning the morphology and spacing between micro pillars significantly improved the surface non-wettability stability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Multidisciplinary Sciences
Jingjiang Wei, Fei Pan, Hang Ping, Kun Yang, Yanqing Wang, Qingyuan Wang, Zhengyi Fu
Summary: Throughout billions of years, biological systems have developed sophisticated hierarchical structures to adapt to changing environments. By mimicking this natural process, additive manufacturing offers a promising approach to creating new materials with properties similar to biological materials. This review provides an overview of natural biomaterials, highlighting their chemical and structural compositions at different scales, as well as the mechanisms behind their properties. It also discusses the designs, preparations, and applications of bioinspired multifunctional materials produced through additive manufacturing at various scales. By summarizing the characteristics of both natural and synthetic biomaterials, this review inspires the development of new materials for various applications.
Article
Materials Science, Multidisciplinary
Minjing Li, Tongzhen Yang, Qing Yang, Zheng Fang, Hao Bian, Chengjun Zhang, Xun Hou, Feng Chen
Summary: In this study, a multi-functional curved artificial compound eye (MF-ACE) was fabricated using a combination of femtosecond laser wet etching, soft lithography, and PDMS swelling methods. The MF-ACE exhibited excellent anti-fogging, anti-fouling, and self-cleaning abilities, as well as high optical performance and uniformity. It has potential applications in various fields under harsh environmental conditions.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Optics
Yayan Huang, Rui Zhao, Wenhao Miao, Dan Liang, Zhiqiang Liu, Xian Wei, Zhongcheng Liang
Summary: This paper proposes a tunable zoom bifocal liquid lens based on selective wettability. The lens consists of immiscible internal and external droplets that can change their curvatures by applying different voltages, resulting in continuous movement of the long and short focal points. Experimental results demonstrate the feasibility and practicability of this concept.
Article
Nanoscience & Nanotechnology
Xinxue Wu, Chaolong Fang, Wangdong Xu, Dawei Zhang
Summary: Inspired by natural compound eyes, a curved artificial-compound-eye (cACE) photodetector is proposed and fabricated to enhance light-harvesting capability. The fabricated photodetector exhibits desirable geometric shape and improved photocurrent output, making it suitable for luminance sensing.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Hong Hu, Duorui Wang, Hongmiao Tian, Qiyao Huang, Chunhui Wang, Xiaoliang Chen, Yuan Gao, Xiangming Li, Xiaoming Chen, Zijian Zheng, Jinyou Shao
Summary: The novel contact-sensible adhesive (CSA) structure integrates adhesion and sensing functions, making it sensitive to external pressure, tension, and shear loads, while also showing enhanced adhesion on uneven surfaces.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Mechanical
Ludovico Musenich, Alessandro Stagni, Flavia Libonati
Summary: Designing lightweight, damage-tolerant, and sustainable materials is crucial for technological advancements. Lattice materials have shown potential for achieving multifunctionality, and their performance can be enhanced through structural hierarchy. However, there is still a gap in achieving the perfection seen in natural materials. In this study, 3D hierarchical lattice structures were analyzed to understand the role of hierarchical strategies. The results showed that introducing structural heterogeneity can improve mechanical properties, while structural hierarchy has minimal impact on deformation behavior but extends functionality. This research opens new possibilities for various applications. (c) 2022 Elsevier Ltd. All rights reserved.
EXTREME MECHANICS LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Shijie Su, Junsheng Liang, Xiaojian Li, Wenwen Xin, Xushi Ye, Jianping Xiao, Jun Xu, Li Chen, Penghe Yin
Summary: This study successfully fabricates artificial compound eyes with hierarchical macro/micro/nano structures, enhancing water repellency and reducing reflectance. The durable superhydrophobicity is maintained after water impact, and the artificial compound eyes exhibit excellent imaging quality and a wide field-of-view.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Engineering, Electrical & Electronic
Yueqi Zhai, Qingqing Han, Jiaqi Niu, Jingquan Liu, Bin Yang
Summary: Compound eyes, as important sensory organs for insects, have a wide field of view and high sensitivity, with manufacturing technology now approaching the diameter range of natural compound eyes, showing promising applications.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2021)
Article
Biochemistry & Molecular Biology
Lorenzo Vannozzi, Alessandro Lucantonio, Arturo Castillo, Antonio De Simone, Leonardo Ricotti
Summary: This work proposes an innovative model to predict the inner and outer radii in rolled structures based on polydimethylsiloxane bilayers. The model is applicable to elastomeric bilayers capable of large deformations and shows good agreement with experimental data. It also successfully predicts the features of a complex bioinspired elastomeric microstructure.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Nanoscience & Nanotechnology
Qiang Li, Yuting Li, Pengzi Xu, Xiuzhi He, Rongqi Wang, Xiaoqin Zhou, Qiang Liu
Summary: In this study, flexible structures resembling micro-nano pillars, setae, and cilia found on natural organism surfaces were created using a novel fabricating strategy to investigate the phenomenon and mechanism of droplet formation. By adjusting the mold pattern, different micro/nano morphologies could be easily obtained on a smooth film surface. The film, with its uniformly distributed hierarchical micro-nano structure arrays, demonstrated superhydrophobicity, low-adhesion, self-cleaning, anti-icing, and deicing characteristics, making it suitable for various engineering applications.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Wu Xinxue, Fang Chaolong, Li Zhihong, Zhang Yaoju
Summary: A simple and efficient batch preparation method for 3D artificial compound eyes has been proposed, showing high-quality distributions of ommatidia and wide-angle imaging capabilities. This method involves bonding a microlens array to an elastic hemisphere under pressure, achieving clear and distortion-free imaging.
LASER & OPTOELECTRONICS PROGRESS
(2021)
Review
Chemistry, Analytical
Huu Lam Phan, Jungho Yi, Joonsung Bae, Hyoungho Ko, Sangmin Lee, Dongil Cho, Jong-Mo Seo, Kyo-in Koo
Summary: The natural compound eye system has many outstanding properties and artificial compound eye imaging systems have been studied and fabricated thanks to the development of micro- and nano-fabrication techniques. This paper provides a review of artificial compound eye imaging systems, introducing the principle of the natural compound eye, analyzing two types of artificial compound eye systems, presenting applications, and suggesting outlooks.
Article
Optics
Kisoo Kim, Kyung-Won Jang, Sang-In Bae, Hyun-Kyung Kim, Younggil Cha, Jae-Kwan Ryu, Yong-Jin Jo, Ki-Hun Jeong
Summary: An ultrathin arrayed camera (UAC) for high-contrast near infrared (NIR) imaging has been developed using microlens arrays with a multilayered light absorber. Experimental results show increased image contrast and MTF 50 by eliminating optical noise between microlenses through the light absorber. The UAC allows successful NIR imaging to distinguish between the security strip of an authentic bill and the blood vessel of a finger, offering new possibilities for applications in biometric identification, surveillance, and biomedical imaging.
Article
Multidisciplinary Sciences
Wonkyoung Lee, Byoung-Hoon Kang, Hyunwoo Yang, Moonseong Park, Ji Hyun Kwak, Taerin Chung, Yong Jeong, Bong Kyu Kim, Ki-Hun Jeong
Summary: The spread spectrum SERS method allows rapid quantification of neurotransmitters with high temporal resolution and signal-to-noise ratio improvement. It enables unlabelled detection of neurotransmitters without Raman reporters, showing potential for early diagnosis of neurological disorders and biosensing applications.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Sang-In Bae, Kisoo Kim, Kyung-Won Jang, Hyun-Kyung Kim, Ki-Hun Jeong
Summary: The ultrathin and high contrast light-field camera uses a metal-insulator-metal optical absorber to improve light absorption, image contrast, and depth map estimation for 3D imaging applications.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Byoung-Hoon Kang, Youngseop Lee, Eun-Sil Yu, Hamin Na, Minhee Kang, Hee Jae Huh, Ki-Hun Jeong
Summary: The rapid and accurate molecular diagnostics are crucial in the face of pandemic diseases, and the nanoplasmonic PCR provides a new solution for rapid and quantitative molecular diagnostics at point-of-care level.
Article
Biochemical Research Methods
Charles Soon Hong Hwang, Myeong-Su Ahn, Ki-Hun Jeong
Summary: Silver-gold alloy nanohole arrays demonstrate enhanced refractive index sensitivity and long-term stability for ultra-sensitive plasmonic label-free detection of Escherichia coli, providing a new outlook for widely applicable biosensing and bio-medical applications.
BIOMEDICAL OPTICS EXPRESS
(2021)
Article
Materials Science, Multidisciplinary
Myeong-Su Ahn, Charles Soon Hong Hwang, Ki-Hun Jeong
Summary: This study introduces a large-area and single-resonance plasmonic spectral filter for RGB-NIR imaging using nanoimprinted complementary plasmonic structures (CPS). The CPS attenuate unfavorable resonances of nanohole arrays by incorporating extinction resonance of nanodisk arrays, resulting in single peaks in 437, 515, 644, and 912 nm. The unique configuration of CPS greatly enhances color purity and extends color reproduction range, demonstrating tetrachromatic imaging capabilities.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Biochemical Research Methods
Jaehun Jeon, Hyunwoo Kim, Hyunwoo Jang, Kyungmin Hwang, Kyuyoung Kim, Young-Gyun Park, Ki-Hun Jeong
Summary: A handheld confocal microscope catheter using a rapid MEMS scanning mirror is capable of real-time optical biopsy, providing high-definition and high frame rate scanning.
BIOMEDICAL OPTICS EXPRESS
(2022)
Article
Nanoscience & Nanotechnology
Charles S. H. Hwang, Sangyeon Lee, Sejin Lee, Hanjin Kim, Taejoon Kang, Doheon Lee, Ki-Hun Jeong
Summary: This study reports a direct and label-free method for detecting SARS-CoV-2 in respiratory aerosols. The researchers used a highly adsorptive Au-TiO2 nanocomposite SERS face mask and an ablation-assisted autoencoder, successfully detecting SARS-CoV-2 in artificial respiratory aerosols and achieving quantitative analysis of its concentration in aerosols.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Byoung-Hoon Kang, Kyung-Won Jang, Eun-Sil Yu, Hamin Na, Yun-Jae Lee, Woong-Yeol Ko, NamHo Bae, Donggee Rho, Ki -Hun Jeong
Summary: This study presents a rapid and compact real-time RT-PCR system for decentralized molecular diagnostics. It utilizes plasmonic nucleic acid amplification and quantification, and features an ultrafast plasmonic thermocycler, a disposable plastic-on-metal cartridge, and a compact fluorescence microscope. The system successfully enables 10-minute diagnosis of COVID-19 with high amplification efficiency, classification accuracy, and total percent agreement for clinical diagnostic tests.
Article
Materials Science, Multidisciplinary
Sung-Pyo Yang, Jae-Myeong Kwon, Jae-Won Seo, Han Jo Jun, Kyungmin Hwang, Eun-Sun Kim, Ki-Hun Jeong
Summary: This study reports a method for in vivo 3D imaging of abnormal features during endoscopic operation using a light switching microprojector. The microprojector integrates rotational offset microlens arrays and a customized illumination fiber bundle through a single illumination channel of a clinical endoscope. The technique enables accurate measurement of the size and volume of abnormal tissues.
ADVANCED PHOTONICS RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Byoung-Hoon Kang, Kyung-Won Jang, Eun-Sil Yu, Hamin Na, Yun-Jae Lee, Woong-Yeol Ko, NamHo Bae, Donggee Rho, Ki-Hun Jeong
Summary: This study presents an ultrafast plasmonic nucleic acid amplification and real-time quantification system for decentralized molecular diagnostics. The system features ultrafast photothermal cycling, rapid heat transfer, and efficient PCR quantification, along with high-contrast fluorescence microscopic imaging. It enables decentralized point-of-care molecular diagnostic testing in primary care and developing countries.
Article
Optics
Kisoo Kim, Kyung-Won Jang, Hyun-Kyung Kim, Sue Bean Cho, Ki-Hun Jeong
Summary: The biologically inspired intraoral camera features various functional characteristics for dental imaging. It utilizes a convex-concave lens and inverted microlens arrays to collect light from wide angles for multifunctional imaging. Clinical trials have shown its successful application in real-time intraoral monitoring.
JOURNAL OF OPTICAL MICROSYSTEMS
(2022)
Article
Automation & Control Systems
Sang-In Bae, Sangyeon Lee, Jae-Myeong Kwon, Hyun-Kyung Kim, Kyung-Won Jang, Doheon Lee, Ki-Hun Jeong
Summary: This study introduces a machine-learned NIR-LFC method for reading facial expressions by extracting Euclidean distances of 3D facial landmarks in pairwise fashion. The NIR-LFC not only enhances image contrast and reduces reconstruction errors, but also achieves exceptional accuracy in classifying input vectors on facial depth maps of happiness, anger, sadness, and disgust. This LFC provides a new platform for quantitatively labeling facial expressions and emotions in various applications.
ADVANCED INTELLIGENT SYSTEMS
(2022)
Proceedings Paper
Engineering, Biomedical
Myeong-Su Ahn, Charles Soon Hong Hwang, Kyung-Won Jang, Ki-Hun Jeong
Summary: This work presents the first demonstration of a plasmonic hyperspectral camera using an active plasmonic tunable filter, showing continuous peak shifting depending on voltages. The compact plasmonic hyperspectral camera, combined with a B/W camera, was fully packaged with a total size of 16 x 16 x 28 mm. Hyperspectral imaging was successfully demonstrated using this camera, reconstructing the featured spectrum of fruits and hand vein.
SPIE ADVANCED BIOPHOTONICS CONFERENCE (SPIE ABC 2021)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Ki-Hun Jeong
Summary: Inspired by the vision system of Xenos peckii, this study presents various microfabrication methods for microlens arrays and an ultrathin arrayed camera for high contrast and high-resolution multifunctional imaging. The ultrathin array camera mimics the multifunctional vision of insects, allowing for large field-of-view, 3D imaging, high speed imaging, microscopic imaging, and multispectral imaging. Additionally, the study includes recent achievements in diverse biomedical applications.
2021 IEEE CPMT SYMPOSIUM JAPAN (ICSJ)
(2021)
