Research (Washington, D.C.)最新文献

{"title":"Acceptor-Donor-Acceptor <i>π</i>-Stacking Boosts Intramolecular Through-Space Charge Transfer towards Efficient Red TADF and High-Performance OLEDs.","authors":"Chenglin Jiang,&nbsp;Jingsheng Miao,&nbsp;Danwen Zhang,&nbsp;Zhenhua Wen,&nbsp;Chuluo Yang,&nbsp;Kai Li","doi":"10.34133/2022/9892802","DOIUrl":"https://doi.org/10.34133/2022/9892802","url":null,"abstract":"<p><p>Organic push-pull systems featuring through-space charge transfer (TSCT) excited states have been disclosed to be capable of exhibiting thermally activated delayed fluorescence (TADF), but to realize high-efficiency long-wavelength emission still remains a challenge. Herein, we report a series of strongly emissive orange-red and red TSCT-TADF emitters having (quasi)planar and rigid donor and acceptor segments which are placed in close proximity and orientated in a cofacial manner. Emission maxima (<i>λ</i> _em) of 594-599 nm with photoluminescence quantum yields (PLQYs) of up to 91% and delayed fluorescence lifetimes of down to 4.9 <i>μ</i>s have been achieved for new acceptor-donor-acceptor (A-D-A) molecules in doped thin films. The presence of multiple acceptors and the strong intramolecular <i>π</i>-stacking interactions have been unveiled to be crucial for the efficient low-energy TSCT-TADF emissions. Organic light-emitting diodes (OLEDs) based on the new A-D-A emitters demonstrated electroluminescence with maximum external quantum efficiencies (EQEs) of up to 23.2% for the red TSCT-TADF emitters. An EQE of 18.9% at the brightness of 1000 cd m^-2 represents one of the highest values for red TADF OLEDs. This work demonstrates a modular approach for developing high-performance red TADF emitters through engineering through-space interactions, and it may also provide implications to the design of TADF emitter with other colours.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9892802"},"PeriodicalIF":11.0,"publicationDate":"2022-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9275096/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40587868","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanozyme-Triggered Cascade Reactions from Cup-Shaped Nanomotors Promote Active Cellular Targeting.","authors":"Xin Wang,&nbsp;Zhongju Ye,&nbsp;Shen Lin,&nbsp;Lin Wei,&nbsp;Lehui Xiao","doi":"10.34133/2022/9831012","DOIUrl":"https://doi.org/10.34133/2022/9831012","url":null,"abstract":"<p><p>Self-propelled nanomotors have shown enormous potential in biomedical applications. Herein, we report on a nanozyme-powered cup-shaped nanomotor for active cellular targeting and synergistic photodynamic/thermal therapy under near-infrared (NIR) laser irradiation. The nanomotor is constructed by the asymmetric decoration of platinum nanoparticles (PtNPs) at the bottom of gold nanocups (GNCs). PtNPs with robust peroxidase- (POD-) like activity are employed not only as propelling elements for nanomotors but also as continuous O₂ generators to promote photodynamic therapy <i>via</i> catalyzing endogenous H₂O₂ decomposition. Owing to the Janus structure, asymmetric propulsion force is generated to trigger the short-ranged directional diffusion, facilitating broader diffusion areas and more efficient cellular searching and uptake. This cascade strategy combines key capabilities, i.e., endogenous substrate-based self-propulsion, active cellular targeting, and enhanced dual-modal therapy, in one multifunctional nanomotor, which is crucial in advancing self-propelled nanomotors towards eventual therapeutic agents.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9831012"},"PeriodicalIF":11.0,"publicationDate":"2022-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9275069/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40591521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intense Two-Octave Ultraviolet-Visible-Infrared Supercontinuum Laser via High-Efficiency One-Octave Second-Harmonic Generation.","authors":"Mingzhou Li,&nbsp;Lihong Hong,&nbsp;Zhi-Yuan Li","doi":"10.34133/2022/9871729","DOIUrl":"https://doi.org/10.34133/2022/9871729","url":null,"abstract":"<p><p>Intense ultrabroadband laser source of high pulse energy has attracted more and more attention in physics, chemistry, biology, material science, and other disciplines. We report design and realization of a chirped periodically poled lithium niobate nonlinear crystal that supports ultrabroadband second-harmonic generation covering 350-850 nm by implementing simultaneously up to 12 orders of quasiphase matching against ultrabroadband pump laser covering 700-1700 nm with an average high conversion efficiency of about 25.8%. We obtain a flat supercontinuum spectrum with a 10 dB bandwidth covering more than one octave (about 375-1200 nm) and 20 dB bandwidth covering more than two octaves (about 350-1500 nm) in the ultraviolet-visible-infrared regime and having intense energy as 0.17 mJ per pulse through synergic action of second-order and third-order nonlinearity under pump of 0.48 mJ per pulse Ti:sapphire femtosecond laser. This scheme would provide a promising method for the construction of supercontinuum laser source with extremely broad bandwidth, large pulse energy, and high peak power for a variety of basic science and high technology applications.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9871729"},"PeriodicalIF":11.0,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9275071/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40591524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of Dihydroresveratrol in Enhancing the Synergistic Effect of <i>Ligilactobacillus salivarius</i> Li01 and Resveratrol in Ameliorating Colitis in Mice.","authors":"Yiqiu Fei,&nbsp;Shuobo Zhang,&nbsp;Shengyi Han,&nbsp;Bo Qiu,&nbsp;Yanmeng Lu,&nbsp;Weixing Huang,&nbsp;Fang Li,&nbsp;Deying Chen,&nbsp;Björn Berglund,&nbsp;Hang Xiao,&nbsp;Lanjuan Li,&nbsp;Mingfei Yao","doi":"10.34133/2022/9863845","DOIUrl":"https://doi.org/10.34133/2022/9863845","url":null,"abstract":"<p><p>Currently approved therapeutical strategies for inflammatory bowel diseases (IBD) suffer from variable efficacy and association with risk of serious side effects. Therefore, efforts have been made in searching for alternative therapeutics strategies utilizing gut microbiota manipulation. In this study, we show that the probiotic strain <i>Ligilactobacillus salivarius</i> Li01 (Li01) and the phytochemical prebiotic resveratrol (RSV) have synergistic effect in ameliorating colitis in mice. Oral coadministration of Li01 (10⁹ CFU/d) and RSV (1.5 g/kg/d) promoted restoration of various inflammatory injuries and gut microbiota composition, exhibiting a favorable anti-inflammatory effect in DSS-induced colitis mice. The combination treatment was associated with reductions in the levels of proinflammatory cytokines IL-1<i>β</i> and IL-6 and increases in the levels of the anti-inflammatory cytokine IL-17A in mouse serum. Moreover, the combination treatment was found to alter the composition and metabolism of the gut microbiota, especially influencing the production of short chain fatty acids and anti-inflammatory related molecules. The mechanism underlying the improved anti-inflammatory effect from the RSV and Li01 combination treatment was found to be associated with the environmental sensor mammalian aryl hydrocarbon receptor (AHR) and tryptophan metabolism pathway. Administration of RSV in combination with Li01 in different mouse model led to enhanced conversion of RSV into metabolites, including dihydroresveratrol (DHR), resveratrol-sulfate, and resveratrol-glucuronide. DHR was found to be the dominant metabolite of RSV in conventional and colitis mice. An increased DHR/RSV ratio was confirmed to activate AHR and contribute to an enhanced anti-inflammatory effect. DHR is considered as a potential AHR ligand. The DHR/RSV ratio also affected the serotonin pathway by controlling the expression of Tph1, SERT, and 5-HT₇R leading to amelioration of colitis in mice. Our data suggest that treatment with a combination of Li01 and RSV has potential as a therapeutic strategy for IBD; further investigation of this combination in clinical settings is warranted.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9863845"},"PeriodicalIF":11.0,"publicationDate":"2022-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9275091/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40587869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergetic Insulation and Induction Effects Selectively Optimize Multiresonance Thermally Activated Delayed Fluorescence.","authors":"Jinkun Bian,&nbsp;Su Chen,&nbsp;Lili Qiu,&nbsp;Nan Zhang,&nbsp;Jing Zhang,&nbsp;Chunbo Duan,&nbsp;Chunmiao Han,&nbsp;Hui Xu","doi":"10.34133/2022/9838120","DOIUrl":"https://doi.org/10.34133/2022/9838120","url":null,"abstract":"<p><p>Multiresonance (MR) emitters featuring narrowband emissions and theoretically 100% exciton harvesting are great potential for organic light-emitting diode (OLED) applications. However, how to functionalize MR molecules without scarifying emission color purity is still a key challenge. Herein, we report a feasible strategy for selective optimization of MR molecules, which is demonstrated by a blue MR emitter <b>tCBNDASPO</b> substituted with a diphenylphosphine oxide (DPPO) group. Compared to its DPPO-free parent molecule, <b>tCBNDASPO</b> preserves narrowband feature with full widths at half maximum (FWHM) values of 28 nm in film and 32 nm in OLEDs and achieves 40% increased photoluminescence (92%) and electroluminescence quantum efficiencies (28%). It is showed that insulation effect of P=O effectively confines the singlet excited state on MR core to keep emission color purity, and its induction effect enhances singlet radiation and triplet-to-singlet conversion. This synergism for selective optimization is based on rational linkage between MR core and functional groups.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9838120"},"PeriodicalIF":11.0,"publicationDate":"2022-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9275084/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40587870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analytical Modeling of Flowrate and Its Maxima in Electrochemical Bioelectronics with Drug Delivery Capabilities.","authors":"Raudel Avila,&nbsp;Yixin Wu,&nbsp;Rinaldo Garziera,&nbsp;John A Rogers,&nbsp;Yonggang Huang","doi":"10.34133/2022/9805932","DOIUrl":"https://doi.org/10.34133/2022/9805932","url":null,"abstract":"<p><p>Flowrate control in flexible bioelectronics with targeted drug delivery capabilities is essential to ensure timely and safe delivery. For neuroscience and pharmacogenetics studies in small animals, these flexible bioelectronic systems can be tailored to deliver small drug volumes on a controlled fashion without damaging surrounding tissues from stresses induced by excessively high flowrates. The drug delivery process is realized by an electrochemical reaction that pressurizes the internal bioelectronic chambers to deform a flexible polymer membrane that pumps the drug through a network of microchannels implanted in the small animal. The flowrate temporal profile and global maximum are governed and can be modeled by the ideal gas law. Here, we obtain an analytical solution that groups the relevant mechanical, fluidic, environmental, and electrochemical terms involved in the drug delivery process into a set of three nondimensional parameters. The unique combinations of these three nondimensional parameters (related to the initial pressure, initial gas volume, and microfluidic resistance) can be used to model the flowrate and scale up the flexible bioelectronic design for experiments in medium and large animal models. The analytical solution is divided into (1) a fast variable that controls the maximum flowrate and (2) a slow variable that models the temporal profile. Together, the two variables detail the complete drug delivery process and control using the three nondimensional parameters. Comparison of the analytical model with alternative numerical models shows excellent agreement and validates the analytic modeling approach. These findings serve as a theoretical framework to design and optimize future flexible bioelectronic systems used in biomedical research, or related medical fields, and analytically control the flowrate and its global maximum for successful drug delivery.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9805932"},"PeriodicalIF":11.0,"publicationDate":"2022-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8917966/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40311585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Heat Treatment Promotes Ubiquitin-Mediated Proteolysis of SARS-CoV-2 RNA Polymerase and Decreases Viral Load.","authors":"Yasen Maimaitiyiming,&nbsp;Tao Yang,&nbsp;Qian Qian Wang,&nbsp;Yan Feng,&nbsp;Zhi Chen,&nbsp;Mikael Björklund,&nbsp;Fudi Wang,&nbsp;Chonggao Hu,&nbsp;Chih-Hung Hsu,&nbsp;Hua Naranmandura","doi":"10.34133/2022/9802969","DOIUrl":"https://doi.org/10.34133/2022/9802969","url":null,"abstract":"<p><p>Despite extensive efforts, COVID-19 pandemic caused by the SARS-CoV-2 virus is still at large. Vaccination is an effective approach to curb virus spread, but several variants (e.g., delta, delta plus, omicron, and IHU) appear to weaken or possibly escape immune protection. Thus, novel and quickly scalable approaches to restrain SARS-CoV-2 are urgently needed. Multiple evidences showed thermal sensitivity of SARS-CoV-2 and negative correlation between environmental temperature and COVID-19 transmission with unknown mechanism. Here, we reveal a potential mechanism by which mild heat treatment destabilizes the wild-type RNA-dependent RNA polymerase (also known as nonstructural protein 12 (NSP12)) of SARS-CoV-2 as well as the P323L mutant commonly found in SARS-CoV-2 variants, including omicron and IHU. Mechanistically, heat treatment promotes E3 ubiquitin ligase ZNF598-dependent NSP12 ubiquitination leading to proteasomal degradation and significantly decreases SARS-CoV-2 RNA copy number and viral titer. A mild daily heat treatment maintains low levels of both wild-type and P323L mutant of NSP12, suggesting clinical potential. Collectively, this novel mechanism, heat-induced NSP12 degradation, suggests a prospective heat-based intervention against SARS-CoV-2.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9802969"},"PeriodicalIF":11.0,"publicationDate":"2022-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8918953/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40314606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Underwater Monitoring Networks Based on Cable-Structured Triboelectric Nanogenerators.","authors":"Yihan Zhang,&nbsp;Yingying Li,&nbsp;Renwei Cheng,&nbsp;Shen Shen,&nbsp;Jia Yi,&nbsp;Xiao Peng,&nbsp;Chuan Ning,&nbsp;Kai Dong,&nbsp;Zhong Lin Wang","doi":"10.34133/2022/9809406","DOIUrl":"https://doi.org/10.34133/2022/9809406","url":null,"abstract":"The importance of ocean exploration and underwater monitoring is becoming vital, due to the abundant biological, mineral, energy, and other resources in the ocean. Here, a self-powered underwater cable-based triboelectric nanogenerator (TENG) is demonstrated for underwater monitoring of mechanical motion/triggering, as well as searching and rescuing in the sea. Using a novel double-layer winding method combined with ferroelectric polarization, a self-powered cable-structured sensor with a stable electrical output has been manufactured, which can accurately respond to a variety of external mechanical stimuli. A self-powered cable sensing network woven using smart cables can comprehensively transmit information, such as the plane position and dive depth of a submersible. More precisely, it can analyze its direction of movement, speed, and path, along with transmitting information such as the submersible's size and momentum. The developed self-powered sensor based on the cable-based TENG not only has low cost and simple structure but also exhibits working accuracy and stability. Finally, the proposed work provides new ideas for future seabed exploration and ocean monitoring.","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9809406"},"PeriodicalIF":11.0,"publicationDate":"2022-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8837904/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39834712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flexible Ti₃C₂T _<i>x</i> /(Aramid Nanofiber/PVA) Composite Films for Superior Electromagnetic Interference Shielding.","authors":"Yali Zhang,&nbsp;Zhonglei Ma,&nbsp;Kunpeng Ruan,&nbsp;Junwei Gu","doi":"10.34133/2022/9780290","DOIUrl":"https://doi.org/10.34133/2022/9780290","url":null,"abstract":"<p><p>Multifunctional electromagnetic interference (EMI) shielding materials would solve electromagnetic radiation and pollution problems from electronic devices. Herein, the directional freeze-drying technology is utilized to prepare the aramid nanofiber/polyvinyl alcohol aerogel with a directionally porous structure (D-ANF/PVA), and the Ti₃C₂T _<i>x</i> dispersion is fully immersed into the D-ANF/PVA aerogel <i>via</i> ultrasonication and vacuum-assisted impregnation. Ti₃C₂T _<i>x</i> /(ANF/PVA) EMI shielding composite films with directionally ordered structure (D-Ti₃C₂T _<i>x</i> /(ANF/PVA)) are then prepared by freeze-drying and hot pressing. Constructing a directionally porous structure enables the highly conductive Ti₃C₂T _<i>x</i> nanosheets to be wrapped on the directionally porous D-ANF/PVA framework in order arrangement and overlapped with each other. And the hot pressing process effectively reduces the layer spacing between the stacked wavy D-ANF/PVA, to form a large number of Ti₃C₂T _<i>x</i> -Ti₃C₂T _<i>x</i> continuous conductive paths, which significantly improves the conductivity of the D-Ti₃C₂T _<i>x</i> /(ANF/PVA) EMI shielding composite film. When the amount of Ti₃C₂T _<i>x</i> is 80 wt%, the EMI shielding effectiveness (EMI SE) and specific SE (SSE/<i>t</i>) of D-Ti₃C₂T _<i>x</i> /(ANF/PVA) EMI shielding composite film achieve 70 dB and 13790 dB·cm²·g^-1 (thickness and density of 120 <i>μ</i>m and 0.423 g·cm^-3), far superior to random-structured Ti₃C₂T _<i>x</i> /(ANF/PVA) (R-Ti₃C₂T _<i>x</i> /(ANF/PVA)) composite film (46 dB and 9062 dB·cm²·g^-1, respectively) <i>via</i> blending-freeze-drying followed by hot pressing technology. Meanwhile, the D-Ti₃C₂T _<i>x</i> /(ANF/PVA) EMI shielding composite film possesses excellent flexibility and foldability.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9780290"},"PeriodicalIF":11.0,"publicationDate":"2022-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8832284/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39834710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dielectric Manipulated Charge Dynamics in Contact Electrification.","authors":"Kunming Shi,&nbsp;Bin Chai,&nbsp;Haiyang Zou,&nbsp;Daomin Min,&nbsp;Shengtao Li,&nbsp;Pingkai Jiang,&nbsp;Xingyi Huang","doi":"10.34133/2022/9862980","DOIUrl":"https://doi.org/10.34133/2022/9862980","url":null,"abstract":"<p><p>Surface charge density has been demonstrated to be significantly impacted by the dielectric properties of tribomaterials. However, the ambiguous physical mechanism of dielectric manipulated charge behavior still restricts the construction of high-performance tribomaterials. Here, using the atomic force microscopy and Kelvin probe force microscopy, an in situ method was conducted to investigate the contact electrification and charge dynamics on a typical tribomaterial (i.e., BaTiO₃/PVDF-TrFE nanocomposite) at nanoscale. Combined with the characterization of triboelectric device at macroscale, it is found that the number of transferred electrons increases with contact force/area and tends to reach saturation under increased friction cycles. The incorporated high permittivity BaTiO₃ nanoparticles enhance the capacitance and electron trapping capability of the nanocomposites, efficiently inhibiting the lateral diffusion of electrons and improving the output performance of the triboelectric devices. Exponential decay of the surface potential is observed over monitoring time for all dielectric samples. At high BaTiO₃ loadings, more electrons can drift into the bulk and combine with the induced charges on the back electrode, forming a large leakage current and accordingly accelerating the electron dissipation. Hence, the charge trapping/storing and dissipating, as well as the charge attracting properties, should be comprehensively considered in the design of high-performance tribomaterials.</p>","PeriodicalId":520765,"journal":{"name":"Research (Washington, D.C.)","volume":" ","pages":"9862980"},"PeriodicalIF":11.0,"publicationDate":"2022-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8829537/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"39645510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}