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43篇 您的检索式:作者名="Anuj Kumar"
    题名 作者 年代 出处 被引量
1Uniform,Highly Conductive,and Patterned Transparent Films of a Percolating Silver Nanowire Network on Rigid and Flexible Substrates Using a Dry Transfer Technique显示文摘Silver nanowire films are promising alternatives to tin-doped indium oxide(ITO)films as transparent conductive electrodes.In this paper,we report the use of vacuum filtration and a polydimethylsiloxane(PDMS)-assisted transfer printing technique to fabricate silver nanowire films on both rigid and flexible substrates,bringing advantages such as the capability of patterned transfer,the best performance among various ITO alternatives(10Ω/sq at 85%transparency),and good adhesion to the underlying substrate,thus eliminating the previously reported adhesion problem.In addition,our method also allows the preparation of high quality patterned films of silver nanowires with different line widths and shapes in a matter of few minutes,making it a scalable process.Furthermore,use of an anodized aluminum oxide(AAO)membrane in the transfer process allows annealing of nanowire films at moderately high temperature to obtain films with extremely high conductivity and good transparency.Using this transfer technique,we obtained silver nanowire films on a flexible polyethylene terephthalate(PET)substrate with a transparency of 85%,a sheet resistance of 10Ω/sq,with good mechanical flexibility.Detailed analysis revealed that the Ag nanowire network exhibits two-dimensional percolation behavior with good agreement between experimentally observed and theoretically predicted values of critical volume。Anuj R.Madaria Akshay Kumar Fumiaki N.Ishikawa Chongwu Zhou 2010Nano Research2010,3,8:39
2ROS and oxidative burst:Roots in plant development显示文摘Reactive oxygen species(ROS)are widely generated in various redox reactions in plants.In earlier studies.ROS were considered toxic byproducts of aerobic metabolism.In recent years,it has become clear that ROS act as plant signaling molecules that participate in various processes such as growth and development.Several studies have elucidated the roles of ROS from seed germination to senescence.However,there is much to discover about the diverse roles of ROS as signaling molecules and their mechanisms of sensing and response.ROS may provide possible benefits to plant physiological processes by supporting cellular proliferation in cells that maintain basal levels prior to oxidative effects.Although ROS are largely perceived as either negative by-products of aerobic metabolism or makers for plant stress,elucidating the range of functions that ROS play in growth and development still require attention.Anuj Choudhary Antul Kumar Nirmaljit Kaur 2020Plant Diversity2020,42,1:9
3Influence of alumina/MWCNT hybrid nanoparticle additives on tribological properties of lubricants in turning operations显示文摘A hybrid lubricant with improved thermal and tribological properties was developed by blending multiwalled carbon nanotubes(MWCNTs) with alumina-based nanoparticles into cutting fluid at fixed volumetric proportions(10:90). The hybrid cutting fluid was prepared in different volumetric concentrations(0.25, 0.75, and 1.25 vol%), and the tribological properties and contact angles were measured using pin-on-disc tribometry and goniometry, respectively. The study showed a reduction in wear and friction coefficient with increasing nanoparticle concentration. The cutting fluid performance was investigated using minimum quantity lubrication(MQL) in the turning of AISI 304 stainless steel. Regression models were developed for measuring the temperature and tool flank wear in terms of cutting speed, feed, depth of the cut, and nanoparticle concentration using response surface methodology. The developed hybrid nanolubricants significantly reduced the tool flank wear and nodal temperature by 11% and 27.36%, respectively, as compared to alumina-based lubricants.Anuj Kumar SHARMA Jitendra Kumar KATIYAR Shubrajit BHAUMIK Sandipan ROY 2019Friction2019,7,2:7
4Hierarchical peony-like FeCo-NC with conductive network and highly active sites as efficient electrocatalyst for rechargeable Zn-air battery显示文摘Carbon materials featuring hierarchical pores and atomically dispersed metal sites are promising catalysts for energy storage and conversion applications.Herein,we developed a facile strategy to construct functional carbon materials with a fluffy peony-like structure and dense binary FeCo-Nx active sites(termed as f-FeCo-CNT).By regulating the metal content in precursors,a three-dimensional(3D)interconnected conductive carbon nanotubes network was in-situ formed throughout the atomically dispersed FeCo-NC matrix during pyrolysis.Taking advantage of rich pore hierarchy and co-existence of highly active FeCo-Nx sites and beneficial FeCo alloy nanoparticles,the f-FeCo-CNT material exhibited excellent bifunctional performance towards oxygen reduction reaction/oxygen evolution reactions(ORR/OER)with respect to the atomically dispersed FeCo-NC(SA-f-FeCo-NC)and commercial Pt/C+Ru02 mixture,surpassing the SA-f-FeCo-NC with a 20 mV higher ORR half-wave potential and a 100 mV lower OER overpotential(at 10.0 mA/cm^2).Remarkably,the f-FeCo-CNT-assembled Zn-air battery(ZAB)possessed a maximum specific power of 195.8 mW/cm^2,excellent rate capability,and very good cycling stability at large current density of 20.0 mA/cm^2.This work provides a facile and feasible synthetic strategy of constructing low-cost cathode materials with excellent comprehensive ZAB performance.Yiyan Wang Anuj Kumar Mang Ma Yin Jia Yu Wang Ying Zhang Guoxin Zhang Xiaoming Sun Zifeng Yan 2020Nano Research2020,13,4:5
5Polysaccharide-based magnetically responsive polyelectrolyte hydrogels for tissue engineering applications显示文摘Polysaccharide-based bionanocomposite hydrogels with functional nanomaterials were used in biomedical applications.Self-organization of xanthan gum and chitosan in the presence of iron oxide magnetic nanoparticles(Fe_3O_4MNPs)allowed us to form magnetically responsive polyelectrolyte complex hydrogels(MPECHs)via insitu ionic complexation using D-(+)-glucuronic acid?-lactone as a green acidifying agent.Characterization confirmed the successful formation of(and structural interactions within)the MPECH and good porous structure.The rheological behavior and compressive properties of the PECH and MPECH were measured.The results indicated that the incorporation of Fe_3O_4MNPs into the PECH greatly improved mechanical properties and storage modulus(G’).In vitro cell culture of NIH3T3 fibroblasts on MPECHs showed improvements in cell proliferation and adhesion in an external magnetic field relative to the pristine PECH.The results showed that the newly developed MPECH could potentially be used as a magnetically stimulated system in tissue engineering applications.Kummara Madhusudana Rao Anuj Kumar Sung Soo Han 2018Journal of Materials Science & Technology2018,34,8:4
6S-,N-and C-doped ZnO as semiconductor photocatalysts:A review显示文摘In the past few decades,many novel non-metal doped ZnO materials have developed hasty interest due to their adaptable properties such as low recombination rate and high activity under the solar light exposure.In this article,we compiled recent research advances in non-metal(S,N,C)doped ZnO,emphasizing on the related mechanism of catalysis and the effect of non-metals on structural,morphological,optical and photocatalytic characteristics of ZnO.This review will enhance the knowledge about the advancement in ZnO and will help in synthesizing new ZnO-based materials with modified structural and photocatalytic properties.Vijaya KUMARI Anuj MITTAL Jitender JINDAL Suprabha YADAV Naveen KUMAR 2019Frontiers of Materials Science2019,13,1:3
7Bifurcation behaviors analysis of a plankton model with multiple delays显示文摘Anuj Kumar Sharma Amit Sharma Kulbhushan Agnihotri 2016International Journal of Biomathematics2016,9,6:2
8Sensitization of Hydrothermally Grown Single Crystalline TiO2 Nanowire Array with CdSeS Nanocrystals for Photovoltaic Applications显示文摘搬运 nanowires 的电子的一个面向的数组,在一个透明售票员上直接成长为有效光电的应用程序组成最佳的体系结构。另外,因为他们的悦耳的光性质,半导体 nanocrystals 能作为有效轻吸收器工作。在这份报纸,我们使用在一个透明传导性的电极上直接种并且随后与胶体地成年的 CdSeS nanocrystal 量点(QD ) 敏化的 TiO2 nanowires 的一个面向的数组,用一个有效双性人连接器帮助了方法论,到表明光电的房间。在有光的刺激之上,,激子分离发生在 nanowire-nanocrystal 接口它,电子被搬运到做氟的符号的听氧化物(FTO ) 经由单人赛水晶的 TiO2 nanowire 隧道的电极。我们证明促进感受性在氧血浆上跟随的 QD 的前 situ ligand 交换在 QD 装载提高对待 TiO2 nanowires 结果,作为与相比在里面 situ ligand 交换途径。长 TiO2 nanowire 与 CdSeS nanocrystals 敏化的一连串的 1 m 与 23 mA/cm2, 0.60.7 V 的开的电路电压和 5265% 的一个 fill 因素的电线走火电流展出光电的效果,导致有多达 0.6% 的效率的设备。Akshay Kumar Kuan-teh Li Anuj R. Madaria Chongwu Zhou 2011Nano Research2011,4,12:2
9Promoting electrochemical conversion of CO2 to formate with rich oxygen vacancies in nanoporous tin oxides显示文摘Defect engineering,especially oxygen vacancies(O-vacancies) introduction into metal oxide materials has been proved to be an effective strategy to manipulate their surface electron exchange processes.However,quantitative investigation of O-vacancies on CO2 electroreduction still remains rather ambiguous.Herein,a series of nanoporous tin oxide(SnOx) materials have been prepared by thermal treatment at various temperatures and reaction conditions.The annealing temperature dependent Ovacancies property of the SnOx was revealed and attributed to the balance tunning of the desorption of oxygen species and the continous oxidation of SnOx.The as-prepared nanoporous SnOx with 300℃treatment was found to be highest O-vacant material and showed an impressive CO2 RR activity and selectivity towards the conversion of CO2 into formic acid(up to 88.6%),and superior HCOOH incomplete current density to other samples.The ideal performance of the O-vacancies rich SnOx-300 material can be ascribed to the high delocalized electron density inducing much enhanced adsorption of CO2 with O binding and benefiting the subsequent reduction with high selectively forming of formic acid.Tengfei Gao Anuj Kumar Zhicheng Shang Xinxuan Duan Hangchao Wang Shiyuan Wang Shengfu Ji Dongpeng Yan Liang Luo Wen Liu Xiaoming Sun 2019Chinese Chemical Letters2019,30,12:2
10Oxide ancillary ligand-based europium β-diketonate complexes and their enhanced luminosity显示文摘Ternary materials of europium complex with2,2,6,6-tetramethyl-3,5-heptanedione(tmhd) ligand and aqua ligand as ancillary ligands have been prepared and characterized for various optoelectronic characteristics.Reactions of hydrated complex [Eu(tmhd)_(3)(H_(2)O)_(2)] proceeded with triphenylphosphine oxide(TPPO) and pyridine-N-oxide(PNO) ancillary ligands were studied to develop novel complexes. The prepared complexes show good thermal stability. A comparative investigation of preparedmaterials[Eu(tmhd)_(3)(H_(2)O)_(2)],[Eu(tmhd)_(3)(TPPO)_(2)] and [Eu(tmhd)_(3)(PNO)_(2)] was conducted for their luminescent behaviors in order to obtain the role of ancillary ligand in the enhancement of illumination amount generated from europium(Eu^(3+)) ion. Color coordinates of prepared ternary complexes such as[Eu(tmhd)_(3)(H_(2)O)_(2)]with(x = 0.54,y = 0.32),[Eu(tmhd)_(3)(TPPO)_(2)] with(x = 0.56, y = 0.32) and[Eu(tmhd)_(3)(PNO)_(2)] with(x = 0.57, y = 0.33) indicated that these materials exhibited bright red emission in visible region spectrum. The complexes show a proficient energy transport pathway from the ligands to the innermost Eu^(3+)by means of an ancillary ligand-sensitized luminescence process. Interaction between the metal and ligand results in a distinguished effect on quantum efficiency(η) as well as on Judd–Ofelt intensity factor(Ω_(2)) of the prepared materials.Devender Singh Shri Bhagwan Anuj Dalal Kapeesha Nehra Raman Kumar Saini Kapoor Singh Anura Priyajith Simantilleke Sumit Kumar Ishwar Singh 2021Rare Metals2021,40,10:1
11STABILITY AND BIFURCATION ANALYSIS OF A DELAYED INNOVATION DIFFUSION MODEL显示文摘In this article, a nonlinear mathematical model for innovation diffusion with stage structure which incorporates the evaluation stage(time delay) is proposed. The model is analyzed by considering the effects of external as well as internal influences and other demographic processes such as emigration, intrinsic growth rate, death rate, etc. The asymptotical stability of the various equilibria is investigated. By analyzing the exponential characteristic equation with delay-dependent coefficients obtained through the variational matrix, it is found that Hopf bifurcation occurs when the evaluation period(time delay, τ) passes through a critical value. Applying the normal form theory and the center manifold argument, we derive the explicit formulas determining the properties of the bifurcating periodic solutions. To illustrate our theoretical analysis, some numerical simulations are also included.Rakesh KUMAR Anuj Kumar SHARMA Kulbhushan A GNIHOTRI 2018Acta Mathematica Scientia2018,38,2:1
12Mathematical model for smoking: Effect of determination and education显示文摘Anuradha Yadav Prashant K. Srivastava Anuj Kumar 2015International Journal of Biomathematics2015,8,1:1
13DYNAMICAL BEHAVIOR OF AN INNOVATION DIFFUSION MODEL WITH INTRA-SPECIFIC COMPETITION BETWEEN COMPETING ADOPTERS显示文摘In this paper,we proposed an innovation diffusion model with three compartments to investigate the diffusion of an innovation(product)in a particular region.The model exhibits two equilibria,namely,the adopter-free and an interior equilibrium.The existence and local stability of the adopter-free and interior equilibria are explored in terms of the effective Basic Influence Number(BIN)R_(A).It is investigated that the adopter free steady-state is stable if R_(A)<1.By consideringτ(the adoption experience of the adopters)as the bifurcation parameter,we have been able to obtain the critical value ofτresponsible for the periodic solutions due to Hopf bifurcation.The direction and stability analysis of bifurcating periodic solutions has been performed by using the arguments of normal form theory and the center manifold theorem.Exhaustive numerical simulations in the support of analytical results have been presented.Rakesh KUMAR Anuj Kumar SHARMA Govind Prasad SAHU 2022Acta Mathematica Scientia2022,42,1:1
14Telomerase targeted anticancer bioactive prodrug by antisense-based approach 显示文摘Neha Kapoor Anuj Kumar Sharma Vishnu Dwivedi 2007Cancer Letters 2482007,,69:1
15The oral toll-like receptor-7 agonist GS-9620 in patients with chronic hepatitis B virus infection显示文摘Edward J. Gane Young-Suk Lim Stuart C. Gordon Kumar Visvanathan Eric Sicard Richard N. Fedorak Stuart Roberts Benedetta Massetto Zhishen Ye Stefan Pflanz Kimberly L. Garrison Anuj Gaggar G. Mani Subramanian John G. McHutchison Shyamasundaran Kottilil Brad 2015Journal of Hepatology2015,,2:1
16Volatile organic compound emissions from green waste composting: Characterization and ozone formation显示文摘Anuj Kumar Christopher P. Alaimo Robert Horowitz Frank M. Mitloehner Michael J. Kleeman Peter G. Green 2011Atmospheric Environment2011,,10:1
17Mod- eling and finite element analysis of crane boom显示文摘Bhupender Singh Bhaskar Nagar Anuj Kumar 2011International Journal of Advanced Engineering Re- search and Studies2011,3,2:1
18Use of aluminum oxide nanoparticles in wood composites to enhance the heat transfer during hot-pressing显示文摘Anuj Kumar Arun Gupta K V Sharma 2013Eur J Wood Prod2013,71,:1
19Density gradient ultracentrifugation for colloidal nanostructures separation and investigation显示文摘In this article,we review the advancement in nanoseparation and concomitant purification of nanoparticles(NPs) by using density gradient ultracentrifugation technique(DGUC) and demonstrated by taking several typical examples.Study emphasizes the conceptual advances in classification,mechanism of DGUC and synthesis-structure-property relationships of NPs to provide the significant clue for the further synthesis optimization.Separation,concentration,and purification of NPs by DGUC can be achieved at the same time by introducing the water/oil interfaces into the separation chamber.We can develop an efficient method ‘‘lab in a tube' by introducing a reaction zone or an assembly zone in the gradient to find the surface reaction and assembly mechanism of NPs since the reaction time can be precisely controlled and the chemical environment change can be extremely fast.Finally,to achieve the best separation parameters for the colloidal systems,we gave the mathematical descriptions and computational optimized models as a new direction for making practicable and predictable DGUC separation method.Thus,it can be helpful for an efficient separation as well as for the synthesis optimization,assembly and surface reactions as a potential cornerstone for the future development in the nanotechnology and this review can be served as a plethora of advanced notes on the DGUC separation method.Pengsong Li Anuj Kumar Jun Ma Yun Kuang Liang Luo Xiaoming Sun 2018Science Bulletin2018,63,10:1
20Optical Generation of mm-Wave Signal Through Optoelectronic Phase-Locked Loop显示文摘In this paper, we propose a scheme for the generation of low phase noise tunable mm-wave signal by bearing two lightwaves in a photodiode. These two lightwaves are made phase coherent by an optoelectronic phase locked loop. Calculated mm-wave power at a frequency of 60 GHz is found to be -4 dBm.Madhumita Bhattacharya Anuj Kumar Saw Taraprasad Chattopadhyay 2003光学学报2003,23,S1:1
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