Article
Multidisciplinary Sciences
Hyunseok Shim, Seonmin Jang, Anish Thukral, Seongsik Jeong, Hyeseon Jo, Bin Kan, Shubham Patel, Guodan Wei, Wei Lan, Hae-Jin Kim, Cunjiang Yu
Summary: This paper introduces artificial neuromorphic cognitive skins based on elastomeric materials, which can achieve functions such as image memorization and programming through excitatory postsynaptic currents and paired-pulse facilitation index. It has important applications in robotics, wearables, skin prosthetics, and bioelectronics.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
Yunfei Wang, Kai-Lin Chen, Nathaniel Prine, Simon Rondeau-Gagne, Yu-Cheng Chiu, Xiaodan Gu
Summary: Researchers have developed a highly stretchable and self-healable semiconductor elastomer, which can be used to create self-healing flexible electronic devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Joonyoung Lee, Ki-Yoon Kim, Yongchai Kwon, Dahl-Young Khang
Summary: This study proposes stretchable enzymatic biofuel cells (EBFCs) with high performance for power supply. The buckled gold electrodes increase the electrode surface area and catalyst loading, resulting in improved reaction rates. The evaluated EBFCs achieve a maximum power density of 7.1±0.64μW cm-2.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Qihang Chu, Yuqi Sun, Ci Sun, Yu Shuo, Fuguan Jirigalantu, Xiaotian Li, Fuguan Li, Bayanheshig
Summary: This paper proposes a spatial heterodyne Raman spectrometer (SHRS) based on a multi-Littrow-angle multi-grating (MLAMG). Compared with a conventional multi-grating, the MLAMG provides higher spectral resolution and a broader spectral range, and is easier to produce. The experiments demonstrate the significance of MLAMG-SHRS for broadband measurements in various potential applications.
Article
Chemistry, Multidisciplinary
Seong Won Kim, Sangsik Park, Siyoung Lee, Daegun Kim, Giwon Lee, Jonghyun Son, Kilwon Cho
Summary: Researchers have successfully developed a stretchable high-performance organic semiconductor thin film by patterning and pinning a polymer semiconductor solution on an elastomeric substrate. This thin film exhibits superior stretchability and charge transport performance, making it suitable for applications in soft electronics.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Optics
Yongnan Lu, Bonan Li, Yan Zheng, Tailei Wang, Yangyang Zou, Liu Zhang
Summary: In this study, a polarization-insensitive two-dimensional diffraction grating was designed and fabricated to improve the detection efficiency, signal-to-noise ratio, and response uniformity of a spaceborne carbon dioxide imaging spectrometer. The proposed grating exhibited excellent polarization insensitivity and diffraction efficiency, making it suitable for complex space environments and high-precision ground detection spectral instruments.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Electrochemistry
Suresh Narute, Juan Marin Angel, Thein Kyu
Summary: This article presents the development of an elastomeric, highly conductive polymer electrolyte membrane (PEM) network through the functionalization of poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (PEG-b-PPG-b-PEG) with acrylates, and evaluates its electrochemical performance.
ELECTROCHIMICA ACTA
(2023)
Article
Physics, Applied
Jiaxin Yang, Chunyang Jin, Binlai Hu, Guokeng Liu, Haihua Xu
Summary: Soft optoelectronics that can conform to human skins are important for human-machine interactions, health monitoring, and soft robotics. However, there are challenges such as complex procedures and high-power dissipation that hinder their practical applications.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Joab S. Dorsainvil, Matthew S. Brown, Zahra Rafiee, Anwar Elhadad, Seokheun Choi, Ahyeon Koh
Summary: This paper reports the development of a breathable, lightweight, and biocompatible stretchable paper for unconventional bioelectronic substrates. The stretchable paper is fabricated through coaxial electrospinning of cellulose acetate polymer and silicone elastomer, providing bioconformability without the need for adhesive. The resulting cellulose-silicone fibers exhibit a high percent strain and retain the natural characteristics of paper. It can be used for biosensing, energy generation and storage, and soft actuators, and is compatible with conventional printing and fabrication processes.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Chemistry, Analytical
Qingyu Wang, Honghai Shen, Weiqi Liu, Jingzhong Zhang, Lingtong Meng
Summary: A compact, high-resolution cross-dispersion spectrometer was designed in this study, using a reflective immersion grating as the primary spectroscopic device for recording infrared spectra. The spectrometer allows for miniaturization design and high-resolution observation, meeting the requirements of the design.
Article
Optics
Jian Jin, Wei Dang, Zhong Wang, Jun Wu, Zhenhua Yu, Xiaobao Cao, Xudi Wang
Summary: Microspectrometer has become a significant research direction in spectral analysis. This study presents a unique and cost-effective method for fabricating a hybrid microlens array (MLA)/grating based on a microfluidic system. The experimental results and simulations show that the hybrid element can effectively enhance the optical properties and improve the spectral resolution.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Changyu Shen, Zhenlin Huang, Xiaoman Chen, Hongchen Chen, Zhihao Wang, Yi Li, Jiaxiang Liu, Jinglan Zhou
Summary: A highly sensitive reflective-type fiber hydrogen sensor based on an enlarged taper cascaded with a tilted fiber grating (TFBG) was proposed. The sensor showed a high sensitivity of 4.83 dB/% with a rapid response time of 26 s and recovery time of 40 s. It utilized a hydrogen-sensitive Au-Pd nanofilm coated on the TFBG surface to change the reflective spectra of the TFBG and obtain the hydrogen concentration.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Review
Chemistry, Multidisciplinary
Dianpeng Qi, Kuiyuan Zhang, Gongwei Tian, Bo Jiang, Yudong Huang
Summary: Stretchable electronics rely on elastic substrates to bear and regulate strain distribution, with self-healing properties being crucial for device recovery. Poly(dimethylsiloxane) is commonly used due to its stable chemical properties, thermal stability, and the ability for surface modification and property tailoring to achieve designer functionalities. Challenges and future opportunities in stretchable electronics based on PDMS substrates are also discussed.
ADVANCED MATERIALS
(2021)
Article
Optics
Jiahao Zhan, Yang Zhang, Wei-Lun Hsu, Sylvain Veilleux, Mario Dagenais
Summary: To address the problem of non-flat focal surface in traditional Rowland AWGs, we have designed and implemented a Si3N4 three-stigmatic-point arrayed waveguide grating (TSP AWG) with three inputs, achieving a spectral resolving power over 17,000 experimentally. The flat focal surface of this AWG allows for a butt-coupled detector array positioned at the output facet without compromising the resolving power of the edge channels. It is particularly advantageous for astronomical applications that require an AWG as a light-dispersing component to obtain a complete 2D spectrum. As a proof-of-concept for next generation devices, the design accommodates multiple single-mode fibers coming into the AWG, and its implementation on a high-index-contrast platform (Si3N4/SiO2) enables a compact size of approximately 9.3 x 9.3 mm2.
Article
Optics
Weijia Bao, Xingyong Li, Fengyi Chen, Xueguang Qiao
Summary: This Letter proposes and demonstrates the fabrication of fiber Bragg gratings (FBGs) in a flexible and stretchable coreless polymer optical fiber. The fiber is made of polydimethylsiloxane (PDMS) and periodic grating structures are formed using femtosecond laser direct writing and slit beam shaping. The fabricated FBG shows a wide strain measurement range and a blueshift response to temperature, with low sensitivity to humidity due to low water vapor permeability. With its unique sensing performances, the proposed PDMS FBG has considerable advantages over traditional silica FBG devices for strain and temperature sensing.
