Article
Chemistry, Multidisciplinary
Jiajun Song, Guanqi Tang, Jiupeng Cao, Hong Liu, Zeyu Zhao, Sophie Griggs, Anneng Yang, Naixiang Wang, Haiyang Cheng, Chun-Ki Liu, Iain McCulloch, Feng Yan
Summary: In this study, a high-performance flexible photodetector is realized by gating an organic electrochemical transistor with a perovskite solar cell. The device exhibits high gain, fast response time, and ultrahigh detectivity under a low working voltage, allowing it to track photoplethysmogram signals and peripheral oxygen saturation. This work offers a novel strategy for high-performance flexible photodetectors in low-power, user-friendly, and wearable optoelectronics.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Physical
Azhar Fakharuddin, Haizeng Li, Francesco Di Giacomo, Tianyi Zhang, Nicola Gasparini, Abdulhakem Y. Elezzabi, Ankita Mohanty, Ananthakumar Ramadoss, JinKiong Ling, Anastasia Soultati, Marinos Tountas, Lukas Schmidt-Mende, Panagiotis Argitis, Rajan Jose, Mohammad Khaja Nazeeruddin, Abd Rashid Bin Mohd Yusoff, Maria Vasilopoulou
Summary: The development of textile electronics embedded in clothing is dependent on the transformation of fibers into electronic devices. This process involves considerations such as material selection, device structure, wearability, mechanical stresses, as well as the performance requirements of fiber-shaped electronics and their assembly in smart clothing.
ADVANCED ENERGY MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Do-Gwan Kim, Youngwoo Lee, Kuk Young Cho, Yong-Cheol Jeong
Summary: This study presents a new method of creating thin-film electronic devices that can be selectively or completely disposed of only when needed, while still maintaining stable operation reliability in everyday use. The method involves using a temporary paper substrate, along with phase change encapsulation and highly flexible planarization materials, achieved through a simple solution process. The substrate used in this study provides a smooth surface morphology for stable multilayer formation and exhibits excellent waterproof properties, allowing the proof-of-concept organic light-emitting device to work even when submerged in water. Additionally, the substrate demonstrates reliable folding stability for 1000 cycles at a curvature of 10 mm, and specific components of the device can be selectively made to malfunction with predetermined voltage input, with the entire device being fully disposable through Joule-heating-induced combustion.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Taehee Kim, Seongsik Jeong, Kyeong-Hwan Kim, Hyunseok Shim, Dongho Kim, Hae-Jin Kim
Summary: Metal halide perovskites, as attractive photoactive materials, have shown outstanding performance in various optoelectronic applications. Among them, mixed-halide perovskites with finely tunable band gaps are particularly desirable for targeted applications. However, the photoinduced halide segregation often reduces the photoelectric stability of the materials. In this study, a post-treatment strategy of generating a two-dimensional passivating layer on the perovskite surface was adopted to selectively modulate trap-assisted recombination pathways. The results showed that this approach can improve the photocurrent response and mechanical properties of the perovskite, offering valuable guidance for developing next-generation optoelectronic applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Shuaihang Zhu, Ching-Wen Lou, Shaohua Zhang, Na Wang, Jiwei Li, Yujie Feng, Ruidong He, Changgang Xu, Jia-Horng Lin
Summary: Flexible thin-film heaters with high heat generation performance and good thermal stability were prepared using water-free plasma treatment and magnetron sputtering techniques. The resultant conductive silver/aramid fiber paper (Ag/AFP) showed fast thermal response, efficient Joule heating characteristics, and excellent mechanical properties. The combination of magnetron sputtering and plasma treatment provides a clean pathway for fabricating wearable textiles/devices.
SURFACES AND INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Jiajun Song, Hong Liu, Zeyu Zhao, Peng Lin, Feng Yan
Summary: Flexible and stretchable biosensors are increasingly utilized for acquiring high-fidelity signals in emerging applications. Organic thin film transistors (OTFTs) are ideal candidates for flexible and stretchable biosensing due to their soft nature, amplification function, biocompatibility, functionalization ease, low cost, and device diversity. This review provides a comprehensive overview of the advancements in flexible-OTFT-based biosensors, discussing their features, functionalization strategies, applications in wearable, implantable, and portable electronics, as well as neuromorphic biointerfaces. Special attention is given to emerging stretchable organic transistors and their engineering routes for achieving stretchability, along with their implementations in e-skin and smart textiles. The remaining challenges and future opportunities in this field are also summarized.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Zhanpeng Guo, Yuedong Yu, Wei Zhu, Qingqing Zhang, Yutong Liu, Jie Zhou, Yaling Wang, Jian Xing, Yuan Deng
Summary: This research introduces an innovative design concept of constructing stretchable, deformable, ultralight 3D thin-film thermoelectric generators using kirigami techniques. High-performance inorganic thermoelectric films are introduced without property degradation, leading to the highest open voltage density and maximum power density achieved in the TEG.
ADVANCED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Drishya Kannichankandy, Pratik M. Pataniya, Som Narayan, Vikas Patel, C. K. Sumesh, Kireet D. Patel, Gunvant K. Solanki, Vivek M. Pathak
Summary: The study introduces a low-cost piezo resistive wearable pressure sensor made of Polyaniline and cellulose paper, showing excellent performance and potential applications in the field of flexible wearable sensors.
Article
Materials Science, Multidisciplinary
Youngkyu Hwang, Min Ku Kim, Ze Zhao, Bongjoong Kim, Taehoo Chang, Teng Fei Fan, Mohammed Shahrudin Ibrahim, Subra Suresh, Chi Hwan Lee, Nam-Joon Cho
Summary: This study developed a novel 2D plant-based substrate for flexible electronics, which can be prepared from eco-friendly and biodegradable microgel. The results suggest that flexible green electronics based on plant-based materials have promising applications.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Review
Chemistry, Analytical
Patricia Batista Deroco, Dagwin Wachholz Junior, Lauro Tatsuo Kubota
Summary: In recent years, electrochemical wearable sensors have gained significant attention for their potential applications in point-of-care testing due to their high sensitivity, simplicity, miniaturization, and low cost. New fabrication approaches and innovative substrates have enabled real-time and on-body measurements. These sensors have also been combined with paper-based substrates for non-invasive analyses. Additionally, they allow monitoring of analytes in different biofluids without complex procedures. The integration of IoT with wearable sensors has attracted interest for real-time data collection in resource-limited conditions. This mini-review highlights the advancements in wearable electrochemical devices and discusses challenges for higher performance.
Article
Chemistry, Multidisciplinary
Sa Cai, Chaolei Zuo, Jiayu Zhang, Hui Liu, Xiaosheng Fang
Summary: A paper-based wearable photodetector is reported, which can simultaneously measure transient light intensity and accumulated light dosage. The photodetector fully utilizes the natural hygroscopicity and softness of paper, showing decent flexibility. This work introduces a new type of wearable photodetector by structure design and material selection, shedding light on more novel works for convenient and practical photodetection.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Chemistry, Analytical
Patricia Batista Deroco, Dagwin Wachholz Junior, Lauro Tatsuo Kubota
Summary: In recent years, electrochemical wearable sensors have gained significant attention due to their high sensitivity, simplicity, and low cost. These sensors, coupled with innovative substrates and paper-based substrates, allow real-time and on-body measurements and non-invasive analysis of biofluids. The integration of IoT technology enables remote data collection and processing. The use of paper as an intelligent substrate for electrochemical wearable sensors has advantages and drawbacks. Future advancements in wearable sensors include multiplexed detection of biomarkers, reducing analysis time and cost, and providing comprehensive physiological analysis to the wearer.
Article
Nanoscience & Nanotechnology
Disiya Davis, Swathi Krishna Narayanan, Arya Ajeev, Jayashree Nair, Jithin Jeeji, Ananthu Vijayan, Midhun Viyyur Kuttyadi, Arun Nelliparambil Sathian, Arul Kashmir Arulraj
Summary: In this study, a paper-based, room-temperature-operatable acetone sensor using ZnO-polyaniline-based acetone-sensing inks was proposed. The fabricated paper-based electrodes exhibited good electrical conductivity and mechanical stability. The acetone sensors showed a fast response and recovery time at room temperature and delivered a wide sensitivity range over physiological conditions. The correlation between the surface, interfacial, microstructure, electrical, and electromechanical properties of the paper-based sensor devices with the sensitivity and room-temperature recovery was investigated.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Shun-Xin Li, Hong Xia, Xiang-Chao Sun, Yang An, He Zhu, Hong-Bo Sun
Summary: Micro/nano optoelectronic devices based on curved substrates are important in various fields, but current fabrication processes pose challenges. This study proposes a novel method using temperature-gradient-assisted nanoimprint-based in situ micro/nano-crystal growth to fabricate high-quality curved perovskite microwire crystal arrays on curved surfaces. High-performance curved photodetectors with extraordinary stability are fabricated based on these arrays. These findings provide insights into the application of high-performance perovskite photodetectors in nonconformal optical systems.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Lixian Jiang, Zhewei Li, Qingshun Dong, Xin Rong, Guifang Dong
Summary: In this study, high-stability 2D/3D perovskite thin films were successfully fabricated using TEAI and dual additives, NH4SCN and NH4Cl, for perovskite photodetectors. The optimized devices exhibited good performance and showed promise in light-intensity adders and optical communication systems.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Polymer Science
Xiang-Chao Sun, Zhi-Peng Zhang, Zhi-Juan Sun, Jia-Xin Zheng, Xue-Qing Liu, Hong Xia
Summary: This article describes a smart diffraction grating based on shape memory polymers, which has nano-scale precision, deformability, recovery ability, and adjustable spectral performance. The smart grating exhibits rapid deformation and recovery, making it applicable in optics, electronics, and integrated sensing.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Shu-Yu Liang, Yue-Feng Liu, Shen-Yuan Wang, Hong Xia, Hong-Bo Sun
Summary: A femtosecond laser direct writing strategy was demonstrated for in situ fabrication of high-resolution-patterned perovskite quantum dots (PQDs), achieving a minimum line width of 1.58 μm. The strategy showed applicability in full-color PQD materials while preserving the original photophysical properties.
Article
Optics
Shuyu Liang, Ying Yang, Chao Lv, Yuefeng Liu, Hong Xia
Summary: In this study, femtosecond laser direct writing (FsLDW) was used to achieve in situ fabrication of flexible polypyrrole (PPy) with high-precision flexible patterning and spatial control over polymerization. By constructing a photodetector using PPy microwires and integrating multiple photodetectors, an image sensor was fabricated, demonstrating the potential application of FsLDW technology in developing miniaturized and integrated electronic devices based on conductive polymers.
Article
Clinical Neurology
Ren Wei, Xiaolu Xu, Yunyun Duan, Ningnannan Zhang, Jie Sun, Haiqing Li, Yuxin Li, Yongmei Li, Chun Zeng, Xuemei Han, Fuqing Zhou, Muhua Huang, Runzhi Li, Zhizheng Zhuo, Frederik Barkhof, James H. Cole, Yaou Liu
Summary: This study evaluated the clinical significance of deep learning-derived brain age prediction in NMOSD and RRMS. The results showed that both NMOSD and RRMS patients had a significantly higher brain age gap compared to healthy controls. The brain age gap was associated with baseline disability score, advanced brain volume loss, and disease duration. Additionally, the brain age gap predicted the worsening of disability status in both NMOSD and RRMS patients.
JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY
(2023)
Article
Nanoscience & Nanotechnology
Shu-Yu Liang, Yue-Feng Liu, Zhi-Kun Ji, Hong Xia
Summary: Femtosecond laser ablation (FsLA) technology allows programmable ablation and removal of various materials with high precision. However, its moderate repeatability limits its application in advanced micro-/nanostructure fabrication. This study applied FsLA to quantum dot films and successfully fabricated a physical unclonable multilevel fluorescent anticounterfeiting label, which is compatible with deep learning algorithms for convenient and accurate authentication. This work demonstrates the promising potential of FsLA as a core anticounterfeiting technique for commercial products and drugs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Oncology
Ting Sun, Yongzhi Wang, Xing Liu, Zhaohui Li, Jie Zhang, Jing Lu, Liying Qu, Sven Haller, Yunyun Duan, Zhizheng Zhuo, Dan Cheng, Xiaolu Xu, Wenqing Jia, Yaou Liu
Summary: This study aimed to develop a fully automated deep learning pipeline for the stratification of overall survival in spinal cord astrocytoma patients based on preoperative MR images. A total of 587 patients were included to develop an automated pipeline for tumor segmentation and survival prediction. The results showed that the automated models achieved accurate predictions of 1-year, 3-year, and 5-year survival rates.
Article
Endocrinology & Metabolism
Menghui Zhang, Xiaocong Liu, Xiaolu Xu, Jing Li, Zhiqin Bu, Qingling Yang, Hao Shi, Wenbin Niu, Shanjun Dai, Yuling Liang, Yihong Guo
Summary: This study aimed to evaluate the cut-off value of anti-Mullerian hormone (AMH) combined with body mass index (BMI) in the diagnosis of polycystic ovary syndrome (PCOS) and polycystic ovary morphology (PCOM). The results showed that AMH is an independent predictor of PCOS and PCOM. The distribution of AMH in PCOS was significantly different based on different phenotypes and severity of ovulation disorders.
REPRODUCTIVE BIOLOGY AND ENDOCRINOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Shu-Yu Liang, Yue-Feng Liu, Zhi-Kun Ji, Shen-Yuan Wang, Hong Xia, Hong-Bo Sun
Summary: Researchers have developed a femtosecond laser-induced forward transfer (FsLIFT) technology for programmable fabrication of high-resolution full-color perovskite quantum dot (PQD) arrays and arbitrary micropatterns. This technology does not require chemical reagent treatment or mask contact, ensuring the preservation of the photophysical properties of PQDs. The high-resolution PQD array achieved using FsLIFT can facilitate the development of diverse practical applications based on patterned PQDs.
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.
Review
Chemistry, Multidisciplinary
Zhi-Peng Zhang, Hong Xia
Summary: In recent years, gallium-based liquid metal (GLM) has gained attention due to its exceptional characteristics including ultra-low melting point, high fluidity, high conductivity, and self-healing. GLMs exhibit unique properties at micro and nano scales, such as core-shell structure, sinterability, biocompatibility, and photothermal conversion ability, which drive the development of relevant applications. Therefore, this paper reviews various preparation methods of GLM particles and the conductive connection of GLM nanoparticles through different sintering methods. Moreover, GLM particles also hold great prospects in flexible circuits, sensor detection, medical treatment, energy production, and other fields.
Article
Materials Science, Multidisciplinary
Yang An, Shun-Xin Li, Jia-Cheng Feng, Hong Xia
Summary: As a new inorganic lead-free perovskite, cesium copper iodide (CsCu2I3) has attracted attention in photodetector field due to its non-toxicity, stability, and excellent optoelectronic properties. However, poor crystal quality resulting from random growth and disordered distribution limits its applications. This study utilizes nanoimprinting technology to obtain high-performance photodetectors based on highly aligned CsCu2I3 nanowires, showing excellent responsivity and stability.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Shu-Yu Liang, Hai-Jing Zhang, Yue-Feng Liu, Zhi-Kun Ji, Hong Xia, Hong-Bo Sun
Summary: We report a femtosecond laser printing strategy for high-precision and high-quality patterned perovskite films by integrating in situ crystallization and patterning into one printing step. The improved crystallization quality of laser-printed films is due to localized nucleation and growth at the laser-irradiated area, avoiding incomplete film coverage and poor crystallization quality from rapid solvent evaporation during thermal annealing. High-resolution pixel arrays and designed patterns with a minimum line width of 2 μm have been demonstrated using the high precision of femtosecond laser printing. A prototype of perovskite light-emitting diodes (LEDs) has also been fabricated, showcasing the potential of femtosecond laser printing technology for high-precision patterned perovskite film optoelectronic devices for display applications.
Article
Chemistry, Multidisciplinary
Shu-Yu Liang, Yue-Feng Liu, Jian-Guan Hua, Zhi-Kun Ji, Hong Xia
Summary: This article introduces a femtosecond laser regulatory focus ablation (FsLRFA) technique, which can fabricate semiconductor core-shell quantum dots and perovskite materials into nanoscale films for optoelectronic device manufacturing. This technology has nanoscale resolution and patterning capability, paving the road for highly integrated applications based on quantum dots and perovskites.
Article
Chemistry, Multidisciplinary
He Zhu, Yun-Zhi Dai, Xiang-Chao Sun, Hong Xia
Summary: A fine H-2 sensor based on single Pd microwires (SPMs) with excellent sensing performance was reported. The sensor was prepared by femtosecond-laser-induced deposition of palladium nanoparticles (PdNPs). It has a wide detection range of H-2 sensing and exhibits two sensing mechanisms with the increase of H-2 concentration.
NANOSCALE ADVANCES
(2022)
