Article
Materials Science, Multidisciplinary
Pei Feng, Jiye Jia, Li Yu, Anjie Min, Sheng Yang, Cijun Shuai
Summary: The addition of L-LA into PLLA scaffold promoted its degradation rate by weakening intermolecular forces and introducing hydrophilic functional groups, leading to reduced crystallinity and increased weight loss. The scaffold also exhibited good cytocompatibility for cell adhesion and growth with enhanced cell numbers and adhesion area over time.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Nur Setiawan Suroto, Asra Al Fauzi, Prihartini Widiyanti, Fitria Renata Bella
Summary: Stroke is the second leading cause of death, disability, morbidity, and mortality worldwide. Carotid stenosis is one of the main causes of ischemic stroke. This study used the electrospinning process to create a biomaterial using PLLA as a base material and adding chitosan and heparin to improve biocompatibility. The results showed that the biomaterial had strong physical properties and could modify the inflammatory response.
JOURNAL OF SCIENCE-ADVANCED MATERIALS AND DEVICES
(2023)
Article
Polymer Science
Zhen Zhang, Limin Wang, Qian Zhang, Hongkun Li, Yong Xiang, Xinyu Wang, Xiaoran Hu
Summary: Chronic wounds are a burden to patients and the health system, and electrical stimulation by a piezoelectric generator (PEG) can effectively promote wound healing. However, current PEGs suffer from low biocompatibility and piezoelectric output. In this study, a bio-based PEG composed of PLLA blended with VB2 was developed, which exhibited improved biocompatibility and higher piezoelectric output. The PLLA/VB2 PEG promoted in vitro cell migration and fibroblast proliferation, as well as in vivo wound closure by enhancing re-epithelialization, collagen deposition, neovascularization, and growth factor concentration in the wound bed.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Biomedical
Ritopa Das, Thinh T. Le, Benjamin Schiff, Meysam T. Chorsi, Jinyoung Park, Priscilla Lam, Andrew Kemerley, Ajayan Mannoor Supran, Amit Eshed, Ngoc Luu, Nikhil G. Menon, Tannin A. Schmidt, Hanzhang Wang, Qian Wu, Mahesh Thirunavukkarasu, Nilanjana Maulik, Thanh D. Nguyen
Summary: Electrical stimulation combined with tissue engineering techniques using a biodegradable self-charged piezoelectric PLLA nanofiber matrix can effectively promote wound healing and prevent bacterial growth. This novel approach utilizes an external ultrasound to activate the piezoelectric scaffold, generating controlled surface charges with different polarities that suppress bacterial growth and promote skin regeneration simultaneously. In vitro and in vivo experiments demonstrate the efficacy of this multi-tasking, battery-free electrical stimulator in facilitating cell proliferation, gene expression related to wound healing, and bacterial infection prevention.
Article
Biophysics
Maria I. Echeverria Molina, Kyriakos Komvopoulos
Summary: Polymer degradation and mechanical properties play a crucial role in tissue engineering. In this study, the degradation behavior of electrospun PLLA bilayer microfibrous scaffolds in a pH-neutral medium was investigated. The interplay between chain scission and orderly chain rearrangement during degradation was found to be critical. The bilayer PLLA scaffolds with adequate matrix stiffness showed potential for tissue engineering and drug delivery applications.
JOURNAL OF BIOMECHANICS
(2023)
Article
Chemistry, Physical
Shuang Sun, Qikuan Cheng, Zhengrong Chen, Jiaqi Zheng, Rong Liu, Zijie Liu, Yunming Wang, Li Zheng
Summary: This study presents the development of a flexible piezoelectric nanogenerator with high power output and superior mechanical stability. It can respond to tiny human movements and convert mechanical energy into electrical energy to power miniature electronics. The PVDF-based nanofiber aerogel shows potential for applications in wearable electronics and portable power sources.
Article
Green & Sustainable Science & Technology
Xiaoxia Gu, Meng Cui, Bin Wang, Chenghao Zhang, Yanlong Zhu, Xu Jin, Rui Wang, Xiuqin Zhang
Summary: Developing environmentally-friendly piezoelectric polymers for wearable electronic devices is crucial for reducing dependence on fossil energy and achieving carbon neutrality. Poly (L-lactic acid) (PLLA) is a bio-based piezoelectric polymer with significant research value. By combining PLLA with CO2-based polyurea (PU), nanofiber films are prepared using electrospinning technology, and piezoelectric sensors are assembled to optimize material properties. The PU/PLLA piezoelectric sensor, with 16 wt% of PU, exhibits a voltage of 19 V, which is 15 times higher than that of the PLLA piezoelectric sensor, demonstrating good stability and durability. The high dipole moment of -NH-CO-NH- in PU, and the synergistic effect between PU and PLLA, are crucial for improving the piezoelectric property of the nanofiber film. This study presents the first report on the preparation of composite piezoelectric materials using CO2-based polymer and PLLA, and highlights the potential application of the PU/PLLA piezoelectric sensor as a self-powered sensor in intelligent wearable devices.
ADVANCED SUSTAINABLE SYSTEMS
(2023)
Article
Chemistry, Multidisciplinary
Mingchao Sun, Shaojuan Chen, Peixue Ling, Jianwei Ma, Shaohua Wu
Summary: This study successfully fabricated methacrylated gelatin/poly(L-lactic acid) hybrid nanofiber mats and demonstrated their excellent hydrophilic properties and high water absorption capacity. The UV crosslinking process significantly improved the structural stability and mechanical properties of the nanofiber mats. Crosslinked nanofiber mats with higher MeGel content showed enhanced attachment, growth, and proliferation of human dermal fibroblasts.
Article
Polymer Science
Marziyeh Motiei Pour, Mohammad Reza Moghbeli, Bagher Larijani, Hamid Akbari Javar
Summary: Asymmetrically poly(L-lactic acid)/poly(ethylene oxide) (PLLA/PEO) electrospun scaffolds were incorporated with novel mesoporous TiO2-alendronate nanoparticles loaded with dexamethasone (Dex-TiO2-ALN). The incorporation of nanoparticles reduced the diameter of the electrospun fibers, but did not significantly change the surface morphology. Mechanical tests showed improved strength for the samples reinforced with TiO2-ALN and Dex-TiO2-ALN. The release profile of the scaffolds showed an initial burst release followed by a gradual increase, and introducing Dex-TiO2-ALN nanoparticles enhanced cell viability, ALP activity, and calcium deposition.
IRANIAN POLYMER JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Cijun Shuai, Zhicheng Wang, Haiyang Zhang, Jiye Jia, Liping Huang, Dong Wang, Shijie Chen, Pei Feng
Summary: Poly (l-lactic acid) (PLLA) is a promising scaffold material for bone defect repair, but its slow degradation rate hinders its application. In this study, biosoluble ceramic fiber (BCF) was introduced into PLLA matrix to manufacture a PLLA/BCF composite scaffold. BCF dissolution accelerated degradation, promoted bone bonding, and improved mechanical properties of the scaffold.
NPJ MATERIALS DEGRADATION
(2022)
Article
Biophysics
Zhigang Zhang, Long Zhu, Wanjun Hu, Jidong Dai, Pengfei Ren, Xiangyu Shao, Bo Xiong, Tianzhu Zhang, Zhenling Ji
Summary: This study developed a novel composite material combining polypropylene (PP) mesh and poly (L-lactic acid) (PLA) electrospun nanofibers for repairing abdominal wall defects. In vivo experiments showed that this composite material had good anti-adhesion and anti-inflammatory properties, and was able to integrate completely with the abdominal wall with sufficient mechanical strength.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Polymer Science
Youngchae Cho, Heeseok Jeong, Baeyeon Kim, Juwoong Jang, Yo-Seung Song, Deuk Yong Lee
Summary: By adjusting the content of PLLA and gelatin, the mechanical properties, water absorption capacity, degradation rate, and cell compatibility of the polymer membranes can be modified. High PLLA content improves the strength of the membranes and reduces their water absorption, while high gelatin content enhances both strength and water absorption.
Article
Engineering, Biomedical
Francesco Lopresti, Francesco Carfi Pavia, Manuela Ceraulo, Elisa Capuana, Valerio Brucato, Giulio Ghersi, Luigi Botta, Vincenzo La Carrubba
Summary: This study investigated the use of nanosilica and nanoclay in polylactic acid electrospun scaffolds, demonstrating that the inclusion of these nanoparticles can enhance the physical and biological properties of the scaffolds. The morphology of nanofibers, wettability, crystallinity, and mechanical properties were all affected by the addition of nanosilica and nanoclay. Cell culture assays showed promising results for bone tissue regeneration, suggesting that nanosilica and nanoclay are potential fillers for engineered electrospun systems.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART A
(2021)
Article
Biochemistry & Molecular Biology
Todd B. Reynolds, Jordan A. Cannon
Summary: A subtilisin enzyme from Bacillus pumilus has been identified to have the ability to depolymerize high-molecular-weight PLLA. Mutational analysis of this enzyme and comparison with a less active homologue from Bacillus subtilis has revealed residues favored for PLLA depolymerization. Hyperactive variants of the enzyme have been generated, with increased activity attributed to opening of binding pockets and increased hydrophobicity. Synergistic effects are observed with combinations of hyperactive mutations, resulting in 830- and 184-fold increases in activity for B. subtilis and B. pumilus subtilisins, respectively. One variant of B. pumilus subtilisin can visibly dissolve high-molecular-weight PLLA films.
Article
Engineering, Biomedical
Susan Bayati, Parmida Harirchi, Payam Zahedi, Abdolmajid Bayandori Moghaddam
Summary: This study aimed to develop a new bioactive wound dressing based on electrospun nanofibers containing Lawsonia inermis for burn wounds. The results showed that the dressing had a positive influence on wound closure and exhibited antibacterial properties.
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
(2023)
Article
Chemistry, Analytical
Naveen Tiwari, Subhodeep Chatterjee, Kuldeep Kaswan, Jun-Hsuan Chung, Kai-Po Fan, Zong-Hong Lin
Summary: Wearable electrochemical sensors are a rapidly developing technology in digital health, with the ability to non-invasively detect chemical analytes. These sensors have excellent performance and low cost, making them ideal for continuous monitoring of real-time health status. This review article discusses the advancements in wearable biosensors, focusing on their electrochemical analysis capabilities. It also explores the challenges and opportunities in this field.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Automation & Control Systems
You Sub Kim, Daeho Yun, Jun Hyun Han, Md. R. U. Ahsan, E-Wen Huang, Jayant Jain, Changwook Ji, Duck Bong Kim, Soo Yeol Lee
Summary: This study presents a bimetallic structure manufactured by gas-metal-arc-welding based on wire-arc additive manufacturing technology. The structure was heat treated for improved mechanical properties, resulting in a microstructural change and enhanced tensile strength. The epitaxial growth at the bimetallic interface and dynamic strain hardening at the interface contributed to the higher hardness observed.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Snigdha Roy Barman, Yu-Jhen Lin, Kuan-Ming Lee, Arnab Pal, Naveen Tiwari, Sangmin Lee, Zong-Hong Lin
Summary: This study reports an innovative self-powered triboelectric nanosensor for the rapid detection of hazardous compound Hg2+ ions. The sensor utilizes the mechanism of solid-liquid contact electrification to selectively detect Hg2+ ions by periodically contacting and separating tellurium nanowire (Te NW) arrays with the Hg2+ solution, leading to in situ formation of mercury telluride nanowire (HgTe NWs). By integrating the Te NW arrays onto robotic hands with wireless transmission functionality, on-site detection of Hg2+ ions in resource-limited settings can be achieved via a simple touch and sense mechanism.
Article
Chemistry, Physical
Tu-Ngoc Lam, Kuang-Ming Chen, Cheng-Hao Tsai, Pei- Tsai, Meng-Huang Wu, Ching-Chi Hsu, Jayant Jain, E-Wen Huang
Summary: To mimic bone and reduce the stress shielding effect of metallic biomaterials, porous CoCrMo alloys with different volume porosities were produced via selective laser melting. A heat treatment process was applied to increase the volume fraction of the desired structure. The compressive mechanical properties were investigated and compared with bone tissue.
Review
Chemistry, Multidisciplinary
Dongwhi Choi, Younghoon Lee, Zong-Hong Lin, Sumin Cho, Miso Kim, Chi Kit Ao, Siowling Soh, Changwan Sohn, Chang Kyu Jeong, Jeongwan Lee, Minbaek Lee, Seungah Lee, Jungho Ryu, Parag Parashar, Yujang Cho, Jaewan Ahn, Il-Doo Kim, Feng Jiang, Pooi See Lee, Gaurav Khandelwal, Sang-Jae Kim, Hyun Soo Kim, Hyun-Cheol Song, Minje Kim, Junghyo Nah, Wook Kim, Habtamu Gebeyehu Menge, Yong Tae Park, Wei Xu, Jianhua Hao, Hyosik Park, Ju-Hyuck Lee, Dong-Min Lee, Sang-Woo Kim, Ji Young Park, Haixia Zhang, Yunlong Zi, Ru Guo, Jia Cheng, Ze Yang, Yannan Xie, Sangmin Lee, Jihoon Chung, Il-Kwon Oh, Ji-Seok Kim, Tinghai Cheng, Qi Gao, Gang Cheng, Guangqin Gu, Minseob Shim, Jeehoon Jung, Changwoo Yun, Chi Zhang, Guoxu Liu, Yufeng Chen, Suhan Kim, Xiangyu Chen, Jun Hu, Xiong Pu, Zi Hao Guo, Xudong Wang, Jun Chen, Xiao Xiao, Xing Xie, Mourin Jarin, Hulin Zhang, Ying-Chih Lai, Tianyiyi He, Hakjeong Kim, Inkyu Park, Junseong Ahn, Nghia Dinh Huynh, Ya Yang, Zhong Lin Wang, Jeong Min Baik, Dukhyun Choi
Summary: Serious climate changes and energy-related environmental problems are critical issues in the world. Triboelectric nanogenerators (TENGs) have become one of the most promising mechanical energy harvesters, offering a solution to reduce carbon emissions and save the environment. Considerable advancements have been made in theory, materials, devices, systems, circuits, and applications in the TENG field, and it has reached the stage of prototype development and commercialization.
Article
Chemistry, Multidisciplinary
Ching-Hsiang Fan, Hong-Chieh Tsai, Yi-Sheng Tsai, Hsien-Chu Wang, Yu-Chun Lin, Po-Han Chiang, Nan Wu, Min-Hwa Chou, Yi-Ju Ho, Zong-Hong Lin, Chih-Kuang Yeh
Summary: This study investigates the use of MoS2 NS to convert ultrasound energy into localized electrical stimulation for neural activation. The results demonstrate that a single pulse of ultrasound can effectively stimulate cells surrounding MoS2 NS without causing cellular damage. The proportion of responsive cells is influenced by the acoustic pressure, number of ultrasound cycles, and concentration of MoS2 NS. This method shows high spatial precision and potential for selective modulation of targeted brain circuits.
Article
Chemistry, Analytical
Akhil K. Paulose, Yueh-Ju Hou, Yu-Shan Huang, Navyamol Chakkalaparambil Dileep, Chia-Lin Chiu, Arnab Pal, Vishal Mani Kalaimani, Zong-Hong Lin, Chuang-Rung Chang, Cheng-Pin Chen, Yi-Chun Lin, Chien-Yu Cheng, Shu-Hsing Cheng, Chao-Min Cheng, Yu-Lin Wang
Summary: A rapid diagnosis platform was developed for detecting Escherichia coli O157:H7 using an electrical double layer (EDL)-gated field-effect transistor-based biosensor. The biosensor demonstrated high sensitivity, portability, high selectivity, quick response, and ease of use. By immobilizing a specially designed ssDNA probe on the extended gate electrode, the biosensor achieved a sharp drain current change within minutes when binding with the target DNA segment of E. coli. The platform showed promising potential for rapid identification of pathogens in future clinical needs.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Dongchang Kim, Deokjae Heo, Kyunghwan Cha, Myunghwan Song, Jin-ho Son, Sunghan Kim, Zong-Hong Lin, Kyungwho Choi, Jihoon Chung, Sangmin Lee
Summary: A portable multipillar TENG (PMP-TENG) with conductive springs is developed in this study, which can provide amplified output and high frequency while preventing damage and noise. It has great value for the application of portable devices.
Article
Materials Science, Multidisciplinary
Rui Fang, Xuebiao Li, Saeed Ahmed Khan, Zhaosu Wang, Xiaojing Cui, Hulin Zhang, Zong-Hong Lin
Summary: Thermogalvanic gels show great promise in renewable energy sources due to their flexibility, stability, and functional diversity. However, their limited adaptability to low or high temperature environments hinders practical applications. In this study, an anhydrous thermogalvanic gel with exceptional temperature tolerance and anti-drying properties is developed using Fe3+/2+ as a redox pair. The gel maintains mechanical flexibility and electrical conductivity over a wide temperature range, thanks to the hydrogen bonds formed between the molecules. This research provides insights into creating flexible thermoelectric materials for energy recovery and self-powered wearable electronics.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Energy & Fuels
Myunghwan Song, Jiwoong Hur, Deokjae Heo, Seh-Hoon Chung, Dongchang Kim, Sunghan Kim, Dongseob Kim, Zong-Hong Lin, Jihoon Chung, Sangmin Lee
Summary: Frictional wear is a major concern for Triboelectric nanogenerators, but it can be reduced by using soft contact designs, although it may decrease the efficiency of power generation. By using a deformable arch-shaped film TENG, unnecessary frictional force can be decreased and the contact area with dielectric materials can be increased. This technology has the potential to be a primary power source for electronic devices.
Article
Chemistry, Physical
Sumin Cho, Donghan Lee, Sunmin Jang, Sunghwan Cho, Jaehan Shim, Yungeon Jang, Zong-Hong Lin, Kyungwho Choi, Dongwhi Choi
Summary: In this work, a spontaneous working mode changeable TENG (SM-TENG) was designed for effectively harvesting wind energy within a broad range of wind speeds. The SM-TENG can switch between contact and separation modes based on input wind speed, generating triboelectricity in lower wind speeds and harvesting more wind energy in higher wind speeds. By using the Taguchi method, optimal parameters were determined to enhance the performance of the SM-TENG, which could power LED displays and Bluetooth thermometers in a wide range of wind speeds.
Article
Materials Science, Multidisciplinary
Nooruddin Ansari, Dong-Hyun Lee, E-Wen Huang, Jayant Jain, Soo Yeol Lee
Summary: The present study investigates the anisotropic microstructure, nanomechanical, and corrosion behavior of direct energy deposited Ti-13Nb-13Zr biomedical alloys. The study reveals different mechanical behaviors in different planes, with the xy plane showing better indentation hardness and lower strain rate sensitivity compared to the x-z plane. The microstructure of the xy plane is finer, leading to better strength and corrosion resistance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Multidisciplinary Sciences
Snigdha Roy Barman, Shuen-Wen Chan, Fu-Cheng Kao, Hsuan-Yu Ho, Imran Khan, Arnab Pal, Chih-Ching Huang, Zong-Hong Lin
Summary: A next generation of wearable self-powered wound dressing is developed, which can be activated by diverse stimuli from the patient's body and provide on-demand treatment for both normal and infected wounds. The dressing utilizes thermocatalytic bismuth telluride nanoplates (Bi2Te3 NPs) functionalized onto carbon fiber fabric electrodes, generating hydrogen peroxide to effectively inhibit bacterial growth at the wound site. The integrated electrodes connected to a wearable triboelectric nanogenerator (TENG) accelerate wound closure by enhancing cellular proliferation, migration, and angiogenesis. This self-powered dressing has great potential in personalized and user-friendly wound care with improved healing outcomes.
Article
Chemistry, Multidisciplinary
Arnab Pal, Anindita Ganguly, Po-Han Wei, Snigdha Roy Barman, Chia-Chih Chang, Zong-Hong Lin
Summary: This study provides an in-depth analysis and quantification of the triboelectric properties of amino acids in the stratum corneum of human skin. It presents an extended triboelectric series, highlighting high-abundance amino acids in the outer layer of the skin. Additionally, it detects the racemization susceptibility of homochiral aspartic acid, with significant consequences for human skin.
Article
Engineering, Environmental
Yen -Han Lai, Snigdha Roy Barman, Anindita Ganguly, Arnab Pal, Jui-Han Yu, Syun-Hong Chou, E-Wen Huang, Zong-Hong Lin, San-Yuan Chen
Summary: The process of wound healing is often obstructed by bacterial infection. To achieve effective wound recovery, it is necessary to develop innovative strategies to alleviate infection. In this study, a self-activated composite dressing was developed, consisting of piezoelectric and photothermal functional layers, to combat wound infection and provide the desired treatment. This dressing can generate reactive oxygen species (ROS) for antibacterial activity, and convert them into molecular oxygen (O2) to treat chronic hypoxia in infected wounds. Additionally, the dressing can enhance wound recovery through its photothermal activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Sirinya Ukasi, Paritta Jutapukti, Chiranicha Ninthub, Nattapong Pinpru, Phakkhananan Pakawanit, Wanwilai Vittayakorn, Satana Pongampai, Naratip Vittayakorn, Thitirat Charoonsuk
Summary: This study explores the enhancement of electrical output of flexible hybrid piezoelectric-triboelectric nanogenerators by incorporating gamma-glycine into fully organic composites. The research demonstrates the importance of optimized concentrations of gamma-glycine and chitosan in achieving superior performance. The study identifies the critical content of gamma-glycine that leads to the highest output signal, and provides theoretical explanations for this observation.
Article
Chemistry, Physical
Yoonsang Ra, Yu-seop Kim, Seonmo Yang, Namgyu Kang, Gyuwon Oh, Chungyeon Cho, Sangmin Lee, Dongwhi Choi
Summary: In this study, a portable energy harvester (STEP) was proposed to drive various functional LEDs using biomechanical energy. The roles and functionalities of a triboelectric nanogenerator (TENG) and electromagnetic generator (EMG) in the hybrid energy harvester were experimentally demonstrated, and the necessity of hybridization for LED-involved devices was described. The STEP showed promising potential as an effective energy supply strategy for various functional LEDs in related industries.
Article
Chemistry, Physical
Dae Sol Kong, Kyung Hoon Kim, Ying Chieh Hu, Jong Hun Kim, Inseo Kim, Jeongwan Lee, Joonhyuk Lee, Won Hyuk Shon, Hanjin Yoo, Chul-Un Ro, Seungsu Lee, Hyoungjeen Jeen, Minbaek Lee, Minseok Choi, Jong Hoon Jung
Summary: With the rapid development of the Internet of Things and artificial intelligence, smart home has emerged to fulfill the security, convenience, and energy-saving issues of modern life. A flexoelectric mica crystal is used to augment the finger touch-driven triboelectric output for operating a wireless and multichannel smart home controller. This work provides important ingredients for enhancing triboelectric output and realizing a convenient, multifunctional, cost-effective, and adaptable smart home control system without batteries.
Article
Chemistry, Physical
Yi Han, Fang Wu, Xiaozhen Du, Zihao Li, Haixiang Chen, Dongxing Guo, Junlei Wang, Hong Yu
Summary: This paper presents a novel type of triboelectric nanogenerator that utilizes wind energy, with a Y-type bluff body to enhance vibration and output power. The application of this generator successfully provides power for a wireless temperature and humidity sensor.
Article
Chemistry, Physical
Wen Zhang, Fangyuan Cheng, Miao Chang, Yue Xu, Yuyu Li, Shixiong Sun, Liang Wang, Leimin Xu, Qing Li, Chun Fang, Meng Wang, Yuhao Lu, Jiantao Han, Yunhui Huang
Summary: This study successfully induced the formation of a uniform and robust CEI by constructing ZrO2 nano-rivets on the surface of LCO, stabilizing the surface of high-voltage LCO and facilitating lithium-ion diffusion.
Article
Chemistry, Physical
Karl P. Olson, Laurence D. Marks
Summary: This paper investigates the role of contacting shapes in triboelectricity and provides scaling rules for designing energy harvesting devices.
Article
Chemistry, Physical
Jong-An Choi, Jingu Jeong, Mingyu Kang, Hee-Jin Ko, Taehoon Kim, Keun Park, Jongbaeg Kim, Soonjae Pyo
Summary: Wind-driven triboelectric nanogenerators (WTENGs) are a promising emerging technology for sustainable wind energy harvesting, offering high output performance, lightweight design, and compact dimensions. This study introduces an innovative WTENG design that leverages a rolling-based mechanism to achieve efficient omnidirectional wind energy harvesting.
Article
Chemistry, Physical
Liwei Dong, Qian Tang, Chaoyang Zhao, Guobiao Hu, Shuai Qu, Zicheng Liu, Yaowen Yang
Summary: This paper proposes a novel hybrid scheme for flag-type nanogenerators (FNGs) that enhances their performance and broadens their operational wind speed ranges by harnessing the synergistic potential of two aerodynamic behaviors. The proposed flag-type triboelectric-piezoelectric hybrid nanogenerator (FTPNG) integrates flapping piezoelectric flags (PEFs) and a fluttering triboelectric flag (TEF). The FTPNG achieves significant power generation and a broad wind speed range, surpassing other FNGs, making it suitable for various self-powered systems and Internet of Things applications.
Review
Chemistry, Physical
Yunmeng Li, Xin Liu, Zewei Ren, Jianjun Luo, Chi Zhang, Changyong (Chase) Cao, Hua Yuan, Yaokun Pang
Summary: The demand for green and eco-friendly materials is growing due to increasing environmental concerns related to traditional petroleum-based products. Marine biomaterials have emerged as a promising alternative, thanks to their abundant availability, biocompatibility, biodegradability, and low toxicity. In this review, we discuss the development and applications of triboelectric nanogenerators (TENGs) based on marine biomaterials. The operational modes, foundational principles, intrinsic qualities, and advantages of marine biomaterials commonly used in TENG designs are highlighted. Approaches to enhance the efficacy of TENGs derived from marine biomaterials are also discussed, along with documented applications from existing literature. Furthermore, the existing challenges and future directions in marine biomaterial-inspired TENGs are explored.
Article
Chemistry, Physical
Matthew P. Wells, Adam J. Lovett, Yizhi Zhang, Zhongxia Shang, Kosova Kreka, Babak Bakhit, Haiyan Wang, Albert Tarancon, Judith L. MacManus-Driscoll
Summary: Reversible solid oxide cells (rSOCs) offer a promising solution to efficient energy conversion, but have been limited in portable power and electrolysis applications due to excessive polarisation resistance of the oxygen electrode at low temperatures. This study demonstrates the growth of symmetric and complete rSOC structures with reduced polarisation resistance by tuning oxygen vacancy through annealing, providing a promising route towards high-performance rSOC devices for portable power applications.
Article
Chemistry, Physical
Kangkang Bao, Minghui Wang, Yue Zheng, Panpan Wang, Liwen Yang, Yang Jin, Hui Wu, Bin Sun
Summary: This study utilizes ethanol as an electrolyte additive to modulate the migration of zinc ions and the surface structure of zinc anodes, resulting in improved capacity retention and cycle life of zinc-based aqueous batteries.
Article
Chemistry, Physical
Haichao Yang, Wensi Cai, Ming Wang, Saif M. H. Qaid, Zhiyuan Xu, Huaxin Wang
Summary: The introduction of sodium alginate (SA) into perovskite solar cells improves the carrier dynamics, stability, and performance by inhibiting nonradiative recombination and retarded charge dynamics.
Article
Chemistry, Physical
Cuirong Zhang, Mingyuan Wei, Zihan Chen, Wansheng Lin, Shifan Yu, Yijing Xu, Chao Wei, Jinwei Zhang, Ziquan Guo, Yuanjin Zheng, Qingliang Liao, Xinqin Liao, Zhong Chen
Summary: Artificial Intelligence of Things (AIoT) aims to establish smart and informative interactions between humans and devices. However, common pixelated sensing arrays in AIoT applications present problems such as hard and brittle devices, complex structures, and low precision. This article introduces an innovative solution called the all-in-one intelligent semitransparent interactive nerve patch (AISI nerve patch), which integrates sensing, recognition, and transmission functionalities into a thin and flexible patch. The AISI nerve patch is semitransparent, allowing for accurate identification without affecting aesthetics, and it can be attached to any curved surface for intelligent and interactive applications. With rapid response time and high precision recognition, it enables the integration of artificial intelligence and achieves high recognition accuracy for further development of AIoT.
Article
Chemistry, Physical
Youcun Bai, Heng Zhang, Huijun Song, Chong Zhu, Lijin Yan, Qin Hu, Chang Ming Li
Summary: A novel stainless-steel supported lattice-mismatched V-S-Se layered compound with high selenium vacancy was synthesized by adjusting the molar ratio of sulfur to selenium. The introduction of selenium vacancies created additional redox peaks of sulfur, providing more mass transport channels and active sites for zinc ions. The specific capacity and cycle stability of the electrode were significantly improved, demonstrating great potential for practical applications and providing insights into the effects of defects on battery performance.
Article
Chemistry, Physical
Yao Xiao, Puxian Xiong, Yakun Le, Zhenjie Lun, Kang Chen, Zhiduo Wang, Peishan Shao, Zhicong Chen, Dongdan Chen, Zhongmin Yang
Summary: This study successfully synthesized a material with multi-stimulus-responsive luminescence and confirmed the internal relationship between luminescence and defects by regulating the distribution and depth of defects. The dynamic process of multi-stimulus-responsive luminescence was validated by experimental and calculation results.
