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Journal of Innovative Optical Health Sciences 2013年第4期6卷 19-26页

作者： MUKTA MAJUMDER NILANJANA DAS sujan kumar saha Department of Computer Science and Engineering Birla Institute of Technology Mesra RanchiJharkhandIndia Maynaguri CCC WBSEDCLJalpaiguri West BengalIndia

A device,that is used for biomedical operation or safety-critical applications like point-of-care health asssment,massive parallel DNA analysis,automated drug discovery,air-quality monitoring and food-safety testing,must have the attributes like relia bility,dependability and *** the biochips are used for these purposes;therefore,these devices must be fault free all the *** before usi ng these chips,they must be well *** are proposing a novel technique that can detect mutiple fults,locate the fault positions within the biochip,as well as calculate the traversal time if the biochip is fault *** proposed technique also highlights a new idea how to select the appropriate base node or pseudo source(start electrode).The main idea of the proposed technique is to form multiple loops with the neighboring electrode arrays and then test each loop by traversing test droplet to check whether there is any *** a fault is detected then the propoed technique also locates it by backtracking the test *** case,no fault is detected,the biochip is fault free then the proposed technique also calculates the time to traverse the *** result suggests that the proposed technique is eficient and shows significant improvement to ca lculate fault-free biochip traversal time over existing method.

关键词： Biochip lab-on-chip medical microsystems biochemical droplet biomedical operation

Molecular Layer Deposition of Crosslinked Polymeric Lithicone for Superior Lithium Metal Anodes

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Energy Material Advances 2021年第1期2021卷 62-77页

作者： Xiangbo Meng Kah Chun Lau Hua Zhou sujan kumar Ghosh Mourad Benamara Min Zou Department of Mechanical Engineering University of ArkansasFayettevilleAR 72701USA Department of Physics and Astronomy California State University NorthridgeCA 91330USA Advanced Photon Source Argonne National LaboratoryLemontIL 60439USA Institute for Nanoscience and Engineering University of ArkansasFayettevilleAR 72701USA

In this work,we for the first time developed a novel lithium-containing crosslinked polymeric material,a lithicone that enables excellent protection effects over lithium(Li)metal *** new lithicone was synthesized via an accurately controllable molecular layer deposition(MLD)process,in which lithium tert-butoxide(LTB)and glycerol(GL)were used as *** resultant LiGL lithicone was analyzed using a suite of ***,we found that the LiGL thichicone could serve as an exceptional polymeric protection film over Li metal *** experimental data revealed that the Li electrodes coated by this LiGL lithicone can achieve a superior cycling stability,accounting for an extremely long cyclability of>13,600 Listripping/plating cycles and having no failures so far in Li/Li symmetric cells at a current density of 5 mA/cm^(2)and an areal capacity of 1 mAh/cm^(2).We found that,with a sufficient protection by this LiGL coating,Li electrodes could realize long-term stable cyclability with little formation of Li dendrites and solid electrolyte *** novel LiGL represents a facile and effective solution to the existing issues of Li anodes and potentially paves a technically feasible route for lithium metal batteries.

关键词： lithium stripping exceptional

Single polarization photonic crystal fiber filter based on surface plasmon resonance

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Frontiers of Optoelectronics 2019年第2期12卷 157-164页

作者： Md. Nazmul HOSSEN Md. FERDOUS Kawsar AHMED Md. Abdul KHALEK sujan CHAKMA Bikash kumar PAUL Department of Information and Communication Technology(ICT) Mawlana Bhashani Science and Technology University(MBSTU)SantoshTangail 1902Bangladesh Group of Biophotomatix SantoshTangail 1902Bagladesh Department of Software Enineering(SWE) Daffodil International UniversityShukrabadDhaka 1207Bangladesh

In this paper,we propose a photonic crystal fiber(PCF)polarization filter based on surface plasmon resonance(SPR)*** nanowire is used as the active plasmonic *** into silica core becomes coupled to gold nanowire stimulating SPR. It soplits light into two orthogonal(x-polarization and y-polarization)polarization in the second order of surface plasmon *** investigations of the proposed PCF filter is finite element method(FEM).By position,the performance of the propsed PCF filter is inspected *** of any polarization can be obtained by properly placing the metal *** maximum cnfinement loss of x-polarization is 692.25dB/cm and y-polarization is 1.13dB/cm offers at resonance position 1.42μ*** a confinement loss difference between two orthogonal polarizations makes PCF a talented candidate to filter ***,the recommended PCF structure is useful for polarization device.

关键词： photonic crystal fiber (PCF) surface plasmon resonance (SPR) perfectly match layer polarization filter

Homicide in southern India—A five-year retrospective study

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Forensic Medicine and Anatomy Research 2013年第2期1卷 18-24页

作者： Sachidananda Mohanty sujan kumar Mohanty Kiran kumar Patnaik Department of Forensic Medicine and Toxicology M.K.C.G. Medical College Berhampur India Department of Forensic Medicine Minakhi Medical College Kanchipuram India

Homicide has become a common practice reflecting anger in southern India. The purpose of this study was to identify the potential risk factors and susceptible victims. This retrospective study analyses the data of 590 cases. Our study revealed that the victims were mostly males of 21 - 30 years, married (63.56%), illiterates (44.07%), low socioeconomic status and belong to rural areas. The laborers and farmers were almost equally affected in males and housewives in females. Outdoor incidents were more (61.86%). Majority of victims were innocent (82.20%) with no previous history of cognizable offence. Blood alcohol was found positive in 30.23% of victims. Sharp cutting weapons were mostly used, with hemorrhage and shock being the most common cause of death. Previous enmity and familial disharmony were the two common causes behind such heinous crime. Most victims had injuries over multiple body parts. Some potential risk factors and their preventive measures pointed at the end.

关键词： Autopsy Homicide Familial Disharmony Victim

Advances in fabrication of ceramic corundum abrasives based on sol–gel process

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Chinese Journal of Aeronautics 2021年第6期34卷 1-17页

作者： Baoteng HUANG Changhe LI Yanbin ZHANG Wenfeng DING Min YANG Yuying YANG Han ZHAI Xuefeng XU Dazhong WANG sujan DEBNATH Muhammad JAMIL Hao Nan Li Hafiz Muhammad ALI Munish kumar GUPTA Zafar SAID School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China College of Mechanical and Electrical Engineering Nanjing University of Aeronautics cand AstronauticsNanjing 210016China Qingdao Sisa Abrasives Co. LtdQingdao 266555China Key Laboratory of Special Purpose Equipment and Advanced Processing Technology Ministry of Education&Zhejiang ProvinceZhejiang University of TechnologyHangzhou 310032China School of Mechanical and Automotive Engineering Shanghai University of Engineering ScienceShanghai 201620China Department of Mechanical Engineering Curtin UniversityMiri 98009Malaysia School of Aerospace University of Nottingham Ningbo ChinaNingbo 315100China Department of Mechanical Engineering King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia Key Lab High Efficiency and Clean Mech Manufacture Shandong UniversityJinan 250100China Deparment of Sustainable and Renewable Energy Engineering University of SharjahSharjah 27272United Arab Emirates

Corundum abrasives with good chemical stability can be fabricated into various free abrasives and bonded abrasive tools that are widely used in the precision machining of various ***,these abrasives cannot satisfy the machining requirements of difficult-to-machine materials with high hardness,high strength,and strong wearing *** superhard abrasives can machine the above-mentioned materials,their dressing and manufacturing costs are *** contrast,ceramic corundum abrasives fabricated by sol–gel method is a costeffective product between conventional and superhard *** corundum abrasives exhibit self-sharpening and high *** this review,the optimization methods of ceramic corundum abrasive properties are introduced from three aspects:precursor synthesis,particle shaping,and ***,the functional mechanism of seeds and additives on the microstructural and mechanical properties of abrasives is ***,seeds can reduce the phase transition temperature and improve fracture *** grain size and uniformly dense structure can be controlled by applying an appropriate amount of multicomponent ***,the urgent need of engineering application and machinability of special shape ceramic corundum abrasives is reviewed,and three methods of abrasive shaping are *** micromold replication technique is highly advanced and can be used to prepare functional ***,the influence of a new sintering method,namely,two-step sintering technique,on the microstructural and mechanical performance of ceramic corundum abrasives is ***,the challenge and developmental trend of the optimization of ceramic corundum abrasives are prospected.

关键词： Ceramic corundum abrasive Seed Shaping technique Sintering additive Sol–Gel Two-step sintering process

Milling Force Model for Aviation Aluminum Alloy: Academic Insight and Perspective Analysis

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Chinese Journal of Mechanical Engineering 2021年第1期34卷 54-88页

作者： Zhenjing Duan Changhe Li Wenfeng Ding Yanbin Zhang Min Yang Teng Gao Huajun Cao Xuefeng Xu Dazhong Wang Cong Mao Hao Nan Li Gupta Munish kumar Zafar Said sujan Debnath Muhammad Jamil Hafiz Muhammad Ali School of Mechanical and Automotive Engineering Qingdao University of TechnologyQingdao 266520China College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjing 210016China State Key Laboratory Mechanical Transmiss Chongqing UniversityChongqing 400044China Key Laboratory of Special Purpose Equipment and Advanced Processing Technology Ministry of Educati on&Zhejiang ProvinceZhejiang University of TechnologyHangzhou 310032China School of Mechanical and Automotive Engineering Shanghai University of Engineering ScienceShanghai 201620China College of Automotive and Mechanical Engineering Changsha University of Science and TechnologyChangsha 410114China School of Aerospace University of Nottingham Ningbo ChinaNingbo 315100China Key Lab High Efficiency and Clean Mech Manufacture Shandong UniversityJinan 250100China College of Engineering University of Sharjah27272 SharjahUnited Arab Emirates Mechanical Engineering Department Curtin University98009 MiriMalaysia Mecha nical Engineering Department King Fahd University of Petroleum and MineralsDhahran 31261Saudi Arabia

Aluminum alloy is the main structural material of aircraft,launch vehicle,spaceship,and space station and is processed by ***,tool wear and vibration are the bottlenecks in the milling process of aviation aluminum *** machining accuracy and surface quality of aluminum alloy milling depend on the cutting parameters,material mechanical properties,machine tools,and other *** particular,milling force is the crucial factor to determine material removal and workpiece surface ***,establishing the prediction model of milling force is important and difficult because milling force is the result of multiparameter coupling of process *** research progress of cutting force model is reviewed from three modeling methods:empirical model,finite element simulation,and instantaneous milling force *** problems of cutting force modeling are also *** view of these problems,the future work direction is proposed in the following four aspects:(1)high-speed milling is adopted for the thin-walled structure of large aviation with large cutting depth,which easily produces high residual *** residual stress should be analyzed under this particular condition.(2)Multiple factors(e.g.,eccentric swing milling parameters,lubrication conditions,tools,tool and workpiece deformation,and size effect)should be considered comprehensively when modeling instantaneous milling forces,especially for micro milling and complex surface machining.(3)The database of milling force model,including the corresponding workpiece materials,working condition,cutting tools(geometric figures and coatings),and other parameters,should be established.(4)The effect of chatter on the prediction accuracy of milling force cannot be ignored in thin-walled workpiece milling.(5)The cutting force of aviation aluminum alloy milling under the condition of minimum quantity lubrication(mql)and nanofluid mql should be predicted.

关键词： Milling Aluminum alloy Force model Empirical model Finite element model Instantaneous milling force model

Optical Chemical Sensor for Screening Cadmium (II) in Natural Waters

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Journal of Sensor Technology 2012年第2期2卷 68-74页

作者： Yadamari Tharakeswar Yakkala Kalyan Battala Gangadhar Korivi sujan kumar Gurijala Ramakrishna Naidu Department of Environmental Sciences Sri Venkateswara University Tirupati India

Membrane based optical chemical sensor (optode) for Cd(II) was developed by the immobilization of a dye 1-(2-Pyridylazo)-2-Napthol (PAN) in the Tri-(2-Ethylhexyl) Phosphate (TEHP) plasticized Cellulose Triacetate (CTA) matrix. Various combinations of PAN immobilized in the cellulose triacetate CTA and Polystyrene (PS) matrices plasticized with Tri-(2-Ethylhexyl) Phosphate TEHP, 2-Nitrophenyl Octyl Ether (NPOE) and Dioctyl Phthalate (DOP) were studied to arrive a suitable composition and found that the optode does not require any extractant to produce a distinct colour change on complexation with Cd(II). On sorption of Cd(II) in the optode matrix, PAN changes color of the optode from golden yellow to violet red having a maximum absorbance (lmax = 553 nm) within 150 min of total equilibration time at pH = 7.5. The optode developed in the present work was studied for its analytical application for Cd(II) in the aqueous samples by spectrophotometry and as well as Flame Atomic Absorption Spectrophotometry (FAAS). This preconcentrated optode showed a linear response by UV-visible spectrophotometry at λmax = 553 nm over a concentration range of 10 ng/mL–1 to 500 ng/mL–1 of Cd(II) ions. Where as the aqueous solutions was also subjected to FAAS before and after equilibration of the optode and found to be linear in the concentration range of 250 ng/mL–1 to 5000 ng/mL–1 of Cd(II) ions. The optode found to be reversible and can be desorbed by equilibrating it with 0.01 mol/L–1 HNO3. The applicability of the developed optode in real samples was studied by determining cadmium in the natural waters spiked with a known amount of Cd(II) ions.

关键词： Optode Cd(II) Ions 1-(2-Pyridylazo)-2-Napthol (PAN) FAAS

Bandgap Saturation in Room Temperature Synthesized Cobalt Doped ZnS Nanoparticles

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材料科学与工程（中英文A版） 2020年第3期10卷 103-110页

作者： sujan kumar Das Shahnaj Parvin Ummay Honey MdSohel Rana Nasrin Jewena Jahirul IslamKhandaker Farid Ahmed Department of Physics Jahangirnagar UniversitySavarDhaka-1342Bangladesh Department of Chemistry Jahangirnagar UniversitySavarDhaka-1342Bangladesh

In this study,cobalt doped ZnS nanoparticles(NPs)have been synthesized by simple chemical precipitation method with six different weight percentages(0.0,0.1,0.3,0.5,0.7 and 1.0%)of cobalt content at room temperature(30°C).X-ray diffraction(XRD)patterns of the samples revealed the formation of cubic structure and calculated particle size were found to be *** band gap values have been obtained from UV-Vis absorption *** has also been found that energy band gap(Eg)increases with the increase in molar concentration of reactant solution and the variation of bandgap was between 5.30-6.01 eV with cobalt doping.

关键词： ZnS nanoparticles cobalt doped bandgap precipitation method