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- 저자 : Balamurugan, (검색결과 130 건)
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Balamurugan, N.B.,Sankaranarayanan, K.,John, M.Fathima The Institute of Electronics and Information Engin 2009 Journal of semiconductor technology and science Vol.9 No.2
The prominent advantages of Dual Material Surrounding Gate (DMSG) MOSFETs are higher speed, higher current drive, lower power consumption, enhanced short channel immunity and increased packing density, thus promising new opportunities for scaling and advanced design. In this Paper, we present Transconductance-to-drain current ratio and electric field distribution model for dual material surrounding gate (DMSGTs) MOSFETs. Transconductance-to-drain current ratio is a better criterion to access the performance of a device than the transconductance. This proposed model offers the basic designing guidance for dual material surrounding gate MOSFETs.
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Surgical outcomes of endoscopic versus open resection for the management of sinonasal malignancies
Balamurugan Rajendran 대한구강악안면외과학회 2020 대한구강악안면외과학회지 Vol.46 No.6
The purpose of this review is to assess the surgical outcomes of two different treatment modalities, endoscopic and open resection, for the management of sinonasal malignancies by comparing the effectiveness of these two methods. A wide search was carried out considering various electronic databases for English language articles from 2013 to 2018 using keywords such as sinonasal malignancies, endoscopic surgery, open resection for sinonasal malignancies, and endoscopic versus open surgery. One thousand articles were identified from the literature for screening. After a thorough systematic assessment and based on the selection criteria, 10 articles with 4,642 patients were included in this quantitative analysis. With a total of 4,642 patients, 1,730 patients were operated on using endoscopic resection and 2,912 patients were operated on using open resection. The endoscopic approach was found to have a shorter hospital stay compared to open surgical resection (P<0.05). The rate of positive margins and the recurrence rate for open surgical resection were both smaller compared to those for endoscopic resection (P>0.05), and the endoscopic approach had smaller complication rates and a higher survival rate compared to open resection (P>0.05). Though endoscopic resection and open surgical resection have comparable postoperative benefits, preoperative evaluation of cases presenting with sinonasal malignancies is necessary for determining the right treatment method to obtain the best possible results postoperatively.
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Balamurugan, N.B.,Sankaranarayanan, K.,Amutha, P.,John, M. Fathima The Institute of Electronics and Information Engin 2008 Journal of semiconductor technology and science Vol.8 No.3
A new two dimensional (2-D) analytical model for the Threshold Voltage on dual material surrounding gate (DMSG) MOSFETs is presented in this paper. The parabolic approximation technique is used to solve the 2-D Poisson equation with suitable boundary conditions. The simple and accurate analytical expression for the threshold voltage and sub-threshold swing is derived. It is seen that short channel effects (SCEs) in this structure is suppressed because of the perceivable step in the surface potential which screens the drain potential. We demonstrate that the proposed model exhibits significantly reduced SCEs, thus make it a more reliable device configuration for high speed wireless communication than the conventional single material surrounding gate (SMSG) MOSFETs.
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Balamurugan Ranganathan,Kandasamy Palani 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.4
Pest control is a major challenging component in agricultural and horticultural crops. Recently, the light-emitting diode (LED) trap driven by solar energy is a growing eco-friendly technology in pest control. The study was aimed to design, fabricate and investigate the effectiveness of a portable solar-powered LED trap for monitoring insect pests. The trap is compressed into a photovoltaic panel, battery, LED array, solar rectifier, insect collection tray, and PVC legs. Four different coloured LEDs viz., ultraviolet (UV)-405 nm, blue-470 nm, green-525 nm and red-630 nm were studied. The study was conducted in a groundnut field during the autumn season for 15 days. The results showed that the UV LED trap captured significantly more insects than the blue, green, and red LED traps except for Helicoverpa armigera. The average attraction of Spodoptera litura, Aproaerema modicella, Amsacta albistriga, Scirtothrips dorsalis, Aphis craccivora, and Empoasca kerri population to UV LED trap was 77.17 ± 18.89, 64.67 ± 12.91, 39 ± 16.80, 43.33 ± 18.30, 38.33 ± 17.08 and 33.17 ± 10.94, respectively. The red LED trap captured the least number of insects; however, the attraction of A. albistriga to the red LED was higher than the blue and green LED traps. Arcsine transformation (AT) was applied to transform experimental trap efficiency. UV LED trap had a significantly higher AT value than other LED traps. Overall mean AT values for UV, green, blue, and red LED traps were 34.98, 31.06, 29.87 and 22.87, respectively. The proposed portable solar-assisted LED trap could be a promising and effective pest control tool in areas where inconsistent electricity supply.
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Balamurugan, C.,Maheswari, A.R.,Lee, D.W.,Subramania, A. Elsevier 2014 CURRENT APPLIED PHYSICS Vol.14 No.3
Beyond the most investigated mesoporous silica and carbon based materials, metal oxides have attracted considerable interest due to their more diverse electronic functionality, which includes gas sensing activities, semiconductor characteristics and magnetic properties. In this paper, we describe the fabrication, characterization and application of mesoporous FeNbO<SUB>4</SUB> nanopowder for ethanol gas sensing application. FeNbO<SUB>4</SUB> nanopowder was synthesized via the niobium-citrate complex method, without using any surfactant and size selection medium. Thermal stability and structure of the nanopowder was analyzed by thermogravimetric analysis (TG/DTA) and X-ray diffraction analysis (XRD). Structural analysis confirmed the formation of FeNbO<SUB>4</SUB> with monoclinic structure. The particle size, electrical and optical properties were also systemically investigated by means of transmission electron microscopy (TEM), impedance and diffused reflectance spectra. Nitrogen adsorption isotherms of the FeNbO<SUB>4</SUB> were type IV with hysteresis loops of type H<SUB>3</SUB> indicating well-defined pore structure with mesoporous nature. The sensing characteristics of FeNbO<SUB>4</SUB> nanopowder such as sensitivity, operating temperature and response time, were studied in the presence of ethanol (C<SUB>2</SUB>H<SUB>5</SUB>OH). Experimental result confirmed that a higher response to ethanol at relatively lower operating temperature of 200 <SUP>o</SUP>C.
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Balamurugan, J.,Thanh, T.D.,Heo, S.B.,Kim, N.H.,Lee, J.H. Pergamon Press ; Elsevier Science Ltd 2015 Carbon Vol.94 No.-
A facile and cost-effective one-pot solvothermal method has been successfully developed to synthesize an N-doped graphene (NG) and copper-nickel oxide (CuNiO) composite. The novel NG/CuNiO composite is proposed to be used as an electrode material for supercapacitors and non-enzymatic glucose sensors. Transmission electron microscopy images indicate the formation of CuNiO nanoparticles with an average diameter of approximately 5.6nm, with good dispersion on the NG sheets. The composite exhibited an excellent specific capacity of ~892Fg<SUP>-1</SUP> (current density of 1Ag<SUP>-1</SUP>) and high long-cycle stability with a 98.5% retention in specific capacitance after 5000 cycles at a current density of 5Ag<SUP>-1</SUP>. This superior electrochemical performance is attributed to high charge mobility, the flexibility of the N-doped graphene structure, and the synergetic effect between CuNiO nanoparticles and NG sheets. Further, the proposed sensor exhibited rapid response (<10s), high sensitivity (7.49μAmM<SUP>-1</SUP>cm<SUP>-2</SUP>), a wide detection range (0.2μM-0.3mM), good reproducibility, long-term stability, and a low detection limit 50nM (S/N=3). The NG/CuNiO composite electrode can be used for high performance supercapacitor and non-enzymatic glucose sensor applications.
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Balamurugan Guru,Ramesh Veerappan,Francis Sangma,Somnath Bera 대한공간정보학회 2017 Spatial Information Research Vol.25 No.6
In the present research work, the landslide susceptibility zonation (LSZ) mapping was carried out for the landslide prone area Nilgiri hills, Tamil Nadu, India. The LSZ mapping was carried out using ten landslide influencing factors along with extensive field investigation. The geospatial database was prepared through integrated remote sensing, geographical information systems, and GPS technologies. The methods adopted for the present study are frequency ratio (FR) which is probabilistic and analytical hierarchical process (AHP) which is subjective and objective based model. The FR values were evaluated through evaluating relationship between causative factors and past landslide (training) locations. The FR values were considered as the base for assigning the weights in AHP method along with the subjective knowledge. The final LSZ map were derived through the spatial integration of all causative factors and classified as different susceptibility classes viz. very low, low, moderate, high, and very high. The prediction accuracy of final LSZ map were validated using past landslide (validation) locations using area under curve (AUC) method. The FR model shown the highest prediction accuracy with AUC value of 0.6279, while the AHP model shown the AUC value of 0.5620.
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Balamurugan, Jayaraman,Thanh, Tran Duy,Karthikeyan, Gopalsamy,Kim, Nam Hoon,Lee, Joong Hee Elsevier 2017 Biosensors & bioelectronics Vol.89 No.2
<P><B>Abstract</B></P> <P>A novel 3D nanocomposite of nitrogen doped Co-CNTs over graphene sheets (3D N-Co-CNT@NG) have been successfully fabricated via a simple, scalable and one-step thermal decomposition method. This 3D hierarchical nanostructure provides an admirable conductive network for effective charge transfer and avoids the agglomeration of NG matrices, which examine direct as well as non-enzymatic responses to glucose oxidation and H<SUB>2</SUB>O<SUB>2</SUB> reduction at a low potential. The novel electrode showed excellent electrochemical performance towards glucose oxidation, with high sensitivity of 9.05μAcm<SUP>−2</SUP> mM<SUP>−1</SUP>, a wide linear range from 0.025 to 10.83mM, and a detection limit of 100nM with a fast response time of less than 3s. Furthermore, non-enzymatic H<SUB>2</SUB>O<SUB>2</SUB> sensors based on the 3D N-Co-CNT@NG electrode exhibited high sensitivity (28.66μAmM<SUP>−1</SUP> cm<SUP>−2</SUP>), wide linear range (2.0–7449μM), low detection limit of 2.0μM (S/N=3), excellent selectivity, decent reproducibility and long term stability. Such outstanding electrochemical performance can be endorsed to the large electroactive surface area, unique porous architecture, highly conductive networks, and synergistic interaction between N-Co-CNTs and nitrogen doped graphene (NG) in the novel 3D nanocomposite. This facile, cost-effective, sensitive, and selective glucose as well as H<SUB>2</SUB>O<SUB>2</SUB> sensors are also proven to be appropriate for the detection of glucose as well as H<SUB>2</SUB>O<SUB>2</SUB> in human serum.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A novel hierarchical 3D nitrogen doped Co-CNTs over graphene nanocomposite has been developed. </LI> <LI> The nanocomposite based electrode showed ultra-high sensitivity of 9.05μAcm<SUP>−2</SUP> mM<SUP>−1</SUP>, excellent selectivity and ultra-low limit detection (100nM) for glucose. </LI> <LI> The novel electrode exhibited high sensitivity (28.66μAmM<SUP>−1</SUP> cm<SUP>−2</SUP>), selectivity and outstanding stability towards H<SUB>2</SUB>O<SUB>2</SUB>. </LI> <LI> Biosensor electrode detect glucose as well as H<SUB>2</SUB>O<SUB>2</SUB> in human serum. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
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