Device
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2023
·
IF 0
Chang Gu,Yan Yan,Jiale He,Donglin Pu,Linsen Chen,Yu-Mo Zhang,Sean Xiao-An Zhang
Transparent non-emissive displays are ideal for augmented reality (AR) applications due to their ability to modulate ambient light as colored and transparent pixels. Electrochromic (EC) displays with transparent “ON” and “OFF” states can help enable such a display. However, unwanted image diffusion and signal crosstalk due to the imbalance between performance and the preparation process limit their practical application. In this work, we present a transparent and energy-efficient EC display prototype (4.2 inch, 16 × 16 pixels). We minimize the signal crosstalk problem by exploiting the confinement effect between EC pixels using the in situ photolithography of EC materials with the application of a photolithographic pixel definition layer and digital dispensing printing. The prototype has an optical modulation of ∼60%, a full-contrast lifetime tested beyond 20,000 cycles, an ultra-low power consumption (9.5 μW/cm 2 ), and the ability to provide spatiotemporally tunable information for potential AR applications.
研究领域:
材料科学
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显示技术
·
光学工程
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DOI
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Junfeng Hou,Congming Ke,Jiajun Chen,Baofan Sun,Yuanzheng Xia,Xu Li,Ting Chen,Yaping Wu,Zhiming Wu,Junyong Kang
Monolayer two-dimensional transition-metal dichalcogenides, such as tungsten disulfide (WS2), are regarded as promising candidates for optoelectronic and electronic applications. Although theoretical calculations have predicted outstanding electronic properties of WS2, the performance of WS2-based electronic devices is still limited by the relatively high Schottky barrier and low carrier mobility. In this work, low-energy argon (Ar+) plasma treatment was used as a nondestructive preconditioning technique to tailor the electrical properties of the WS2 monolayer grown by chemical vapor deposition. Photoluminescence and Raman spectroscopy were used to monitor the modified optical properties of WS2 with increasing plasma treatment time. An improved electrical conductivity was observed after a short-time plasma treatment. The physical mechanism was further revealed by a comparative study between top-electrode and bottom-electrode devices and simulation based on the density functional theory. It is concluded that mild Ar+ plasma treatment can effectively lower the Schottky barrier height and the effective mass of carriers, which reduces the turn-on voltage and enhances the mobility, respectively. However, if the processing time is too long, the WS2 lattice structure will be destroyed. This work has provided an effective method for manipulating the Schottky barrier and mobility of monolayer WS2 transistors and paves the way for developing high-performance electronic devices based on 2D semiconductors.
研究领域:
材料科学
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纳米电子学
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二维材料
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半导体器件
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等离子体处理
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DOI
高影响因子
Processes
·
2026
·Vol. 14
·期 13
·2072
·
IF 3.4
Tao Wei,Shibing Cai,Liangning Huang,Jianwei Song,Tu Hu,Huanwu Zhan
Methane (CH4) was employed as a carbon source for the reduction and carburization of TiO2via a gas-phase infiltration process to synthesize titanium carbide (TiC). The highly reactive and diffusible carbon species derived from CH4decomposition enable a significant reduction in both reaction time and temperature compared with conventional carbothermal reduction methods. The phase evolution during the CH4-driven reduction–carburization of TiO2was analyzed, and the effects of CH4volume fraction, reaction temperature, and reaction time on the carburization efficiency were systematically investigated, with the phase composition and microstructure of the products also characterized. The optimal conditions in a CH4-Ar system were found to be 10%CH4–90%Ar at 1270 °C for 8 h, yielding a carburization efficiency of 79.1% for TiO2pellets. Increasing the CH4proportion led to more severe carbon deposition, with deposited carbon adhering to the pellet surface and clogging the internal pores. Raising the temperature promoted the reduction–carburization reaction, but excessive acceleration of CH4cracking above 1270 °C caused carbon accumulation on the TiO2surface, forming a carbon shell that lowered the carburization efficiency. Prolonging the reaction time was beneficial for achieving a higher degree of carburization.
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DOI
高影响因子
Scientific Reports
·
2026
·
IF 4.9
Zhu Lei,Xu Honghua,Chen Rui,Zhang Can,Wang He,Li Yong,Xu Li,Wang Biao,Xu Ziqiang
Cellulose paper plays the key role in the oil-paper insulation system ensuring safe and reliable operation of power systems, which faces challenges related to its inherent low thermal conductivity, high dielectric constant and hydrophilicity. Herein, polymerization reactions are induced on the surface and within the bulk of the cellulose insulating paper via atmospheric-pressure low-temperature plasma with a precursor formed by incorporating BN powders into octamethylcyclotetrasiloxane (OMCTS). As indicated by SEM, EDS, FTIR, and XPS results, a low-polarity cross-linking network is constructed within intrinsic porous structures of the paper, comprehensively improving thermal, electrical and waterproof performances. The thermal conductivity is increased by 15.9%, thereby enabling a significant enhancement in the heat dissipation capability. The relative dielectric constant of the insulating paper is decreased by 27.3%, maintaining effective dielectric adaptation with insulating oil. The surface and bulk insulation performance of the oil-impregnated paper is reinforced, with a 9.4% increase in the flashover voltage and a 17.5% improvement in bulk breakdown strength. The wetting property is changed from hydrophilic to hydrophobic, reducing water absorption by 32.6%, inhibiting the transport of water molecules. This work provides a promising approach for developing high-performance insulating paper for safe and stable power transmission.
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DOI
PubMed
高影响因子
MOLECULES
·
2025
·Vol. 30
·期 13
·2751
·
IF 4.6
Feng-Jiao Du,Jian-Jun Yu,Jian-Gang Liu,Lu Wang
In this work, the influences of the Ar flow-rate and sublimation temperature on the phase composition and morphological structure of the sublimation products of analytical reagent MoO3are investigated. The results show that the sublimation products are always composed of thermodynamically stable orthorhombic molybdenum trioxide (α-MoO3) and metastable monoclinic molybdenum trioxide (β-MoO3) under different reaction conditions, among which the proportion of β-MoO3gradually increases with the increase in Ar flow-rate and the decrease in sublimation temperature. The formation temperature of α-MoO3is mainly between 780 K and 847 K, with the particles exhibiting an obvious sheet-like morphology. This work also finds that β-MoO3is mainly generated below 500 K; however, due to the co-actions of the deposition of gaseous MoO3molecules, the adsorption of Ar molecules, and the collision effect between the different particles, the newly formed β-MoO3is more inclined to take a spherical-shaped morphology in order to maintain its lowest energy state.
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产品关联
DOI
PubMed
高影响因子
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
·
2024
·
IF 2.5
Le Wang,Zhaobin Lei,Guanjie Zhang,Yang Cheng,Mingwei Zhong,Guangyong Zhang,Sanyuan Hu
The escalating incidence of metabolic pathologies such as obesity and diabetes mellitus underscores the imperative for innovative therapeutics targeting lipid metabolism modulation. Within this context, augmenting thermogenic processes in adipose cells emerges as a viable therapeutic approach. Given the limitations of previous β3-adrenergic receptor (β3-AR) agonist treatments in human diseases, there is an increasing focus on therapies targeting the β2-adrenergic receptor (β2-AR). Olodaterol (OLO) is a potent β2-AR agonist that is a potential novel pharmacological candidate in this area. Our study explores the role and underlying mechanisms of OLO in enhancing brown adipose thermogenesis, providing robust evidence from in vitro and in vivo studies. OLO demonstrated a dose-dependent enhancement of lipolysis, notably increasing the expression of Uncoupling Protein 1 (UCP1) and raising the rate of oxygen consumption in primary brown adipocytes. This suggests a significant increase in thermogenic potential and energy expenditure. The administration of OLO to murine models noticeably enhanced cold-induced nonshivering thermogenesis. OLO elevated UCP1 expression in the brown adipose tissue of mice. Furthermore, it promoted brown adipocyte thermogenesis by activating the β2-AR/cAMP/PKA signaling cascades according to RNA sequencing, western blotting, and molecular docking analysis. This investigation underscores the therapeutic potential of OLO for metabolic ailments and sheds light on the intricate molecular dynamics of adipocyte thermogenesis, laying the groundwork for future targeted therapeutic interventions in human metabolic disorders.
研究领域:
药理学
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代谢学
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内分泌学
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细胞生物学
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产品关联
DOI
PubMed
高影响因子
Drug Design Development and Therapy
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2022
·
IF 4.319
Yuxuan Zhu,Ting Yuan,Yuan Zhang,Jianyou Shi,Lan Bai,Xingmei Duan,Rongsheng Tong,Lei Zhong
Purpose Esophageal squamous cell carcinoma (ESCC) is a refractory malignancy with high morbidity and mortality. Thus, there is an urgent need to find effective targets and agents for ESCC treatment. The purpose of this study was to assess the anti-ESCC effects of a pan-histone deacetylase (HDAC) inhibitor AR-42 and its mechanisms of action.Methods Immunohistochemical staining was performed to detect HDAC1 expression in ESCC and adjacent tissue samples. MTT assay, Edu cell proliferation test, flow cytometry, and subcutaneous xenograft were used to assess the anti-ESCC effects of AR-42; furthermore, the antiangiogenic activity of AR-42 was evaluated using endothelial cell migration, invasion, and tube formation assays as well as zebrafish angiogenesis assay. Western blot analysis was performed to explore the underlying mechanism of the anti-ESCC activity of AR-42.Results HDAC1-positive expression was much higher in ESCC cells than in paracancerous tissues, and the elevated HDAC1 expression was a strong indicator of lymph node metastasis and a more advanced TNM stage of ESCC. Moreover, AR-42 potently suppressed ESCC cell growth through cellular proliferation inhibition and apoptosis induction. Moreover, AR-42 displayed a moderate antiangiogenic activity, and it could significantly inhibit the migration, invasion and tubulogenesis of human umbilical vein endothelial cells as well as intersegmental vessel formation in zebrafish at micromolar concentrations. More importantly, the inhibitory activity of AR-42 on ESCC cells and angiogenesis could also be observed in the TE-1 xenograft model. Further studies showed that AR-42 exerts its anti-ESCC effects mainly by upregulating the expression of p21 and blocking the transduction of multiple signaling cascades related to tumor growth, especially Stat3-mediated signaling.Conclusion Overall, AR-42 has significant potency for inhibiting ESCC cell growth and shows moderate effect in suppressing angiogenesis, displaying strong anti-ESCC effects in vitro and in vivo. Thus, AR-42 deserves further evaluation as a potential candidate for ESCC therapy.
研究领域:
肿瘤学
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药理学
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分子生物学
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细胞生物学
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DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2020
·
IF 3.83
Kelin Hu,Feipeng Wang,Zijia Shen,Hongcheng Liu,Wen Zeng,Yu Wang
In this study, ZnO–SnO 2 heterojunction nanofibers were fabricated using electrospinning and treated by Ar plasma. The post treatment demonstrated the ability to regulate adsorbed oxygen of nanofibers and thus affecting the gas sensing performance. The results revealed that the gas sensing performances increased with the increase of plasma treatment time at first, then showed a downward trend. The setting for the best H 2 gas performance was 20 min of plasma treatment, under which the response of the sample was 80% higher and the response time was two thirds shorter than those of the untreated sample. The explanation can be that appropriate plasma treatment can increase the oxygen vacancy on the surface of heterojunction nanofibers as well as the resistance modulation range in the air; however, excessive plasma treatment can result in the reduction of the resistance modulation range in the air by reducing the metal oxide to metal.
研究领域:
材料科学
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传感器技术
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产品关联
DOI
高影响因子
MOLECULES
·
2018
·Vol. 23
·期 10
·2492
·
IF 3.098
Xiaodan Liu,Fei Liu,Weihao Huang,Jiyu Peng,Tingting Shen,Yong He
Rapid detection of Cd content in soil is beneficial to the prevention of soil heavy metal pollution. In this study, we aimed at exploring the rapid quantitative detection ability of laser- induced breakdown spectroscopy (LIBS) under the conditions of air and Ar for Cd in soil, and finding a fast and accurate method for quantitative detection of heavy metal elements in soil. Spectral intensity of Cd and system performance under air and Ar conditions were analyzed and compared. The univariate model and multivariate models of partial least-squares regression (PLSR) and least-squares support vector machine (LS-SVM) of Cd under the air and Ar conditions were built, and the LS-SVM model under the Ar condition obtained the best performance. In addition, the principle of influence of Ar on LIBS detection was investigated by analyzing the three-dimensional profile of the ablation crater. The overall results indicated that LIBS combined with LS-SVM under the Ar condition could be a useful tool for the accurate quantitative detection of Cd in soil and could provide reference for environmental monitoring.Keywords:soil;Cd;laser-induced breakdown spectroscopy;argon
研究领域:
环境科学
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分析化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2023
·
IF 6
Feifei Lu,Guanjun Ding,Xiaoyu Ma,Biao Huang,Lijun You
Magnetic chitosan (CS) cross-linked gelatin (Gel) polymer composites (MCGC) were fabricated by reacting CS with Gel in the present of carboxyl modified Fe 3 O 4 nanoparticles and cetyltrimethylammonium bromide using glutaraldehyde as a crosslinking agent. MCGC possessed high zeta potential, abundant active functional groups including amino and hydroxyl groups and facile magnetic separation properties. The prepared MCGC exhibited excellent adsorption performance for AR 18 and the adsorption capacity reached as high as 344.63 mg/g. The adsorption kinetics was fitted well with the pseudo-second order model, while the adsorption isotherms followed the Redlich-Peterson equation best. The thermodynamic studies indicated the adsorption process was exothermic and spontaneous. The adsorption mechanism was studied including electrostatic interaction, hydrogen-bond interaction and π-π stacking between dyes and MCGC. Desorption and renewable experiments proved MCGC possessed high regeneration properties and reusability as an adsorbent.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2022
·
IF 8.047
Han He,Shuqian Xia,Dan Luo
Refining lignin for aromatic hydrocarbons was crucial in the development of clean energy. The most effective way to enhance the carbon efficiency of the raw materials was to reduce the hydrogen consumption and maximize the retention of aromatic ring by directly breaking the C Ar O bond. In this regard, Sn was introduced to regulate the selectivity of Ni/SiO 2 for m-cresol hydrodeoxygenation (HDO) products at low hydrogen consumption. Thanks to the formation of the Ni-Sn alloy in the system, the bimetallic sites synergistically catalyze the C Ar O bond scission through lowering the reaction energy barrier. Further from charge analysis, it was concluded that the charge transfer from Sn to Ni promotes the hydrogenolysis, and the charge transfer between the slab and the adsorbate provides the possibility for the occurrence of direct deoxygenation reaction. The COHP analysis resulted that the introduction of Sn accelerated the C Ar O bond cleavage. Interestingly, another deoxygenation pathway was proposed from the isomerization conversion of m-cresol to dienone intermediate (3-methyl-3,5-cyclohexadienone) in the calculation of transition state. Further HDO can form toluene effortlessly due to the presence of the oxyphilic metal Sn. This also explains the high selectivity of Ni-Sn to toluene. Moreover, the introduction of the Sn promoter effectively prolongs the lifetime of the catalyst by enhancing the tolerance to carbon deactivation.
研究领域:
化学工程
·
催化科学
·
可再生能源
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产品关联
DOI
高影响因子
PLASMA CHEMISTRY AND PLASMA PROCESSING
·
2024
·Vol. 44
·期 5
·1951-1969
·
IF 2.6
Siyuan Sui,Guohua Ni,Hongmei Sun,Ling Kong,Tao Sun
In this paper, a novel method is presented to enhance the antimicrobial properties of polyvinyl chloride (PVC) via plasma-induced grafting of quaternary ammonium (QA). The results show that the content of oxygen-containing functional groups on PVC surface is significantly increased after Ar-O 2 plasma treatment, beneficially enhancing the thickness and adhesion of QA coating. Plasma treatment time critically affects the morphology of PVC surface, which is closely related to the number, depth and diameter of pit on the surface. With the increase of pits size, the PVC surface forms ridge-like protrusions. The coating formed by grafting QA maintains the morphology characteristics of plasma-treated PVC surface. Results of antibacterial test show that specimens have the best antibacterial activity when there are a high and sharp ridge-like structure of QA coating on the plasma-treated PVC surface.
研究领域:
生物材料学
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表面科学
·
高分子化学
·
抗菌材料
·
医学工程
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DOI
高影响因子
危险品化学品经营许可证（带存储）