Ayyanar N
@tce.edu
Assistant Professor, Department of Electronics and Communication Engineering,
Thiagarajar College of Engineering, Madurai, Tamilnadu, India.
RESEARCH INTERESTS
Photonic crystal fiber, plasmonics, sensors, few mode fiber, and fiber laser
FUTURE PROJECTS
Fiber laser
Applications Invited
Bending sensor
Applications Invited
Scopus Publications
Scholar Citations
Scholar h-index
Scholar i10-index
Scopus Publications
K. R. Deepa, S. Padma, S. Sridevi, and N. Ayyanar
Springer Science and Business Media LLC
S. Eswaramoorthy, N. Ayyanar, G. Thavasi Raja, and Fahad A. Alzahrani
Springer Science and Business Media LLC
M. Shanthi, R. Seyezhai, N. Ayyanar, and M. S. Mani Rajan
Springer Science and Business Media LLC
Dhinakaran Vijayalakshmi, N. Ayyanar, C. T. Manimegalai, and Fahad A. Alzahrani
Springer Science and Business Media LLC
Shivam Singh, Bhargavi Chaudhary, Anurag Upadhyay, Divya Sharma, N. Ayyanar, and Sofyan A. Taya
Elsevier BV
S. Meenakshi, G. Prabhakar, N. Ayyanar, and P. Nedumal Pugazhenthi
IEEE
Seaweeds are large algae that grow on rocky shorelines, in shallow coastal waters, and in marine environments. It plays a major role in marine ecosystems and is abundantly available in the Gulf of Mannar Biosphere region. However, some species of seaweed clash with coral reefs and damage them severely due to the release of hydrophobic allelochemicals. Conventional methods are often labor-intensive, which results in adverse environmental effects. The solution to this problem is to involve underwater vehicles for seaweed farming. But the existing underwater vehicles need some soft materials to handle the targeted seaweeds carefully, without affecting the coral reefs and other species in the sea.This study aims to develop a soft robotic gripper with pneumatic to grasp seaweed, which is abundantly available under the sea water nearer to coral reefs. The novel soft pneumatic robotic gripper design has been done for 8 chambers using Ansys Finite Element Analysis software. Gripper deformation analysis is carried out for different pressure levels to understand the behavior of the hyperelastic material.
A Naesha Nithish, Shobhit K. Patel, N. Ayyanar, Jaymit Surve, S. Rajaram, S.N. Deepa, Truong Khang Nguyen, and Fahad Ahmed Al-Zahrani
Institute of Electrical and Electronics Engineers (IEEE)
M. S. Mani Rajan and N. Ayyanar
Springer Nature Switzerland
Rakhi Bhattacharya, M. S. Mani Rajan, A. Sharafali, N. Ayyanar, and Hassan Pakarzadeh
Springer Science and Business Media LLC
H. Pakarzadeh, V. Sharif, D. Vigneswaran, and N. Ayyanar
Optica Publishing Group
S Sridevi, T Kanimozhi, N Ayyanar, Sunny Chugh, M Valliammai, and J Mohanraj
Institute of Electrical and Electronics Engineers (IEEE)
N Ayyanar, G Thavasi Raja, Y. S Skibina, Yashar E. Monfared, A. A. Zanishevskaya, A. A. Shuvalov, and Gryaznov A. Yu
Institute of Electrical and Electronics Engineers (IEEE)
N. Ayyanar, Abinash Panda, S. Rajaram, D. Vigneswaran, and Puspa D. Pukhrambam
Springer Nature Singapore
Ali Rashidnia, Hassan Pakarzadeh, Mohsen Hatami, and Natesan Ayyanar
Springer Science and Business Media LLC
Abinash Panda, D. Vigneswaran, Puspa Devi Pukhrambam, Natesan Ayyanar, and Truong Khang Nguyen
Institute of Electrical and Electronics Engineers (IEEE)
The present research demonstrates a novel 1D photonic crystal (PhC) based reconfigurable biosensor pertaining to label-free detection of different concentrations of progesterone and estradiol, which play a vital role in developing reproductive hormones in women. The proposed sensor is designed by an alternative arrangement of Na3AlF6 and CeO2, with a central defect layer. A thin layer of novel phase change chalcogenide material (Ge2Sb2Te5) is deposited along the two sides of the defect layer to improve the sensing performance. Numerical simulation of transmission spectrum for TE mode is carried out by using the transfer matrix method (TMM). The mainstay of this research is centered on the assay of shift in the defect mode position and intensity with respect to different concentrations of analyte, by changing the phase of the GST material from amorphous to crystalline. Interestingly, we observed a high tunability in defect mode wavelength, when the phase is changed from amorphous to crystalline, which leads to accomplishment of a high sensitivity of 1.75 nm/nmol/L for progesterone and 20.5 nm/nmol/L for estradiol. Aside from sensitivity, other significant parameters like figure of merit and detection limit are computed, which give a deep insight into the sensing performance. These encouraging sensing performances pave the path for efficient detection of different concentrations of progesterone and estradiol to monitor various gynecological problems in women.
Abinash Panda, Puspa Devi Pukhrambam, Natesan Ayyanar, and Truong Khang Nguyen
Elsevier BV
Dhinakaran Vijayalakshmi, C. Manimegalai, N. Ayyanar, D. Vigneswaran and K. Kalimuthu
We have proposed Twin Elliptical Core Photonic Crystal Fiber (TEC-PCF) sensor for the detection of blood glucose level under the influence of hemoglobin components. The main featuring of the proposed biosensor is to detect the wide range of blood glucose content with enhanced sensitivity, by utilizing small length of the fiber. In order to achieve this, we have constructed asymmetric TEC-PCF where the elliptical core is filled by blood sample. The numerical sensing characteristics are evaluated using Finite Element Method (FEM). By varying hemoglobin concentrations as 120 g/L, 140 g/L and 160 g/L, we realize enhanced blood glucose sensing with detection range from 0 g/L to 100 g/L. The sensing performance of the proposed biosensor is studied through the coupling length and transmission power spectrum by calculation of effective index of the coupling mode. The obtained maximum wavelength sensitivity under the influence of 160 g/L hemoglobin content is 2.4 nm/(g/L) and 2.42 nm/(g/L) with fiber length of 0.245 mm and 0.215 mm for X and Y polarization, respectively. Further, limit of detection (LOD) is calculated under the influence of 160 g/L hemoglobin content is 0.375 mg/L and 0.372 mg/L for X and Y polarization, respectively. The proposed miniaturized sensing device can be integrated with microfluidic systems for the development of next-generation biosensor applications as point of-care and lab-on-a-chip.
Dhinakaran Vijayalakshmi, C. T. Manimegalai, Natesan Ayyanar, Truong Khang Nguyen, and K. Kalimuthu
Springer Science and Business Media LLC
D Vijayalakshmi, C T Manimegalai, and N Ayyanar
IOP Publishing
We present a bimetallic coated, low-loss spiral lattice PCF sensor combined with SPR technology that achieves a high sensitivity. The sensing performance and properties of our recommended sensor are realized numerically by the Finite Element Method. Gold is utilized as the plasmonic layer and titanium Oxide (TiO2), which is sandwiched between the silica glass fiber and the gold coating, forming the bimetallic surface. As TiO2 has a high refractive index, they create a strong surface plasmon wave in the plasmonic region that attracts the evanescent field originating from the core region and increases the coupling effect plasmonic and core mode. Hence, the bimetallic coating is performed to achieve better sensing performance and strengthen the SPR process for the presented sensor. The presented sensor’s nominal tolerance is 12,000 nm/RIU for x-polarization to 11,000 MHz for y-polarization. The presented sensor is intended to be used in several applications and sensing fields due to its high sensitivity.
N. Ayyanar, K. V. Sreekanth, G. Thavasi Raja, and M. S. Mani Rajan
Institute of Electrical and Electronics Engineers (IEEE)
A reconfigurable biosensor with different spectral sensitivities could provide new opportunities to increase the label-free selectivity and sensitivity for biomolecules. Here, we propose and numerically demonstrate a phase change chalcogenide material (Ge2Sb2Te5)-based photonic crystal fiber (PCF) sensor for tunable and enhanced refractive index sensing at near infrared (NIR) wavelengths. In order to achieve this, we integrate a thin hybrid sensing layer of Au/Ge2Sb2Te5 with D-shaped PCF. By switching the structural phase of Ge2Sb2Te5 from amorphous to crystalline, we realize tunable and enhanced refractive index sensing with a large figure of merit (FOM) for the sensing range from 1.35 to 1.40, which covers most known analytes such as proteins, cancer cells, glucose and viruses or DNA/RNA. The obtained average bulk refractive index sensitivity is 17,600 nm/RIU and 8,000 nm/RIU for crystalline and amorphous phase, respectively. The observed large tunable differential response of the proposed sensor offers a promising opportunity to design an assay for the selective detection of higher and lower molecular weight biomolecules through future artificial intelligence-based sensing.
D. Vigneswaran, M.S. Mani Rajan, N. Ayyanar, and Shobhit K. Patel
Elsevier BV
Abstract In this article, dual elliptical ring core few-mode fiber (DE-RCF-FMF) profile with assisting dual cladding is investigated. By this approach, it is possible to combine the performance behavior two separate ring core fiber (RCF). Of course, elliptically core region is constructed for polarization maintaining properties. In this way, the maximum number of linearly polarized (LP) modes up to 20 can be generated. As dual channel separation, inner elliptical core region generates maximum of 8 L P modes and identified as LP01, LP11a, LP11b, LP21 for both X - and Y- polarizations. Similarly, outer elliptical core is supposed to generate maximum of 12 L P modes and identified as LP01, LP11, LP11, LP21, LP31, LP41, and LP51 for both x- and y- polarizations. Using finite element method (FEM), each mode characteristics is numerically simulated and the performance studies are compared with other LP modes. It is obviously well known as mode converter property and the conversion is only possible due to the mutual energy sharing between the neighborhood modes. In this design, LP01 mode is converted to LP11 and LP11 converted as LP21. The conversion region may happen for either ellipticity or wavelength variation. Anyhow, the property of mode conversion in the transverse direction is also considered as essential property of Space division multiplexing techniques.
N. Ayyanar and G. Thavasi Raja
Elsevier BV
R. Rajasekar, K. Vinay Kumar, N. Ayyanar, and G. Thavasi Raja
IEEE
In this paper, the 2×2 optical switch is designed by photonic crystal platform. The silicon (Si) and Ge2Sb2Te5 (GST) materials are utilize to design the nano-switch. The proposed device switching operation is based on various GST states. The photonic bandgap of the nanodevice is estimated by the plane wave expansion method. The optical switch functional parameters such as data rate, extinction ratio and losses are estimated by finite-difference-time-domain method. The designed ultracompact switch (135.28 µm2) can be suitable for optical signal processing systems and highspeed network.
K. Vinay Kumar, R. Rajasekar, N. Ayyanar, and G. Thavasi Raja
IEEE
In this paper, we have proposed an ultra-low power and compact 1×1 Mach-Zehnder all-optical switch by using the hexagonal lattice of photonic crystal. The switching operation of ON and OFF condition realized by using the phase-change material which exhibits the property of changing its state from amorphous to crystalline. Optical data signal has no role in transforming the state of the phase-change material as a result the devices can be operated with low power excitation. The footprint of the 1×1 optical switch is 91.76 µm2. The proposed switch exhibits high extinction ratio of 69.70 dB at the wavelengths of 1550 nm. The proposed miniature switch can be used for low power optical signal operations and find its applications in the future optical communication networks and photonic integrated circuits.
K. R. Kishore, Singh Utkarsh, N. Ayyanar, G. Thavasi Raja, and M. S. Sanathanan
Springer Science and Business Media LLC
We propose a label-free refractive index sensor based on hybrid plasmonic resonator which consists of silver split-ring resonator and photonic waveguide. The finite difference time domain evaluation of the design exhibit strong field confinement at the center of the ring and introduces tunable and sensitive notches in the transmission spectrum. The planar tunable architecture which performs well over the range of micro fluid detection, holds the promise of developing multi-analyte label-free biosensors and compactness towards a complete on-chip integrated sensing system. The performance of the proposed refractive index sensor is evaluated by placing different analytes such as saline water and ethanol at the center of the hybrid plasmonic ring which exhibits sensitivity of 847.50 nm·RIU−1 with a figure of merit of 563.25 RIU−1.