Research Publications

Applications of Optical Spectroscopic Techniques for In Situ Soft Tissue Analysis, Jayasankar, S., Unni, S.N. (2024). In: Parthasarathy, K., Manikkam, R. (eds) Translational Research in Biomedical Sciences: Recent Progress and Future Prospects. Springer, Singapore. ISBN 978-981-97-1776-7

Recent developments in optical coherence tomography angiography imaging for the diagnosis and assessment of diabetic retinopathy by John, Pauline and Damodaran, Vani and Sujatha. N and Vasa, Nilesh J, Chapter 2 (Pages 2-1 to 2-32) in Photo Acoustic and Optical Coherence Tomography Imaging, Volume 1. IOP Publishing, ISBN: 978-0-7503-2052-8

Mueller Polarimetry for Biomedical Applications by Sharma, M., Shaji, C., Unni, S.N. (2023). In: Mazumder, N., Kistenev, Y.V., Borisova, E., Prasada K., S. (eds) Optical Polarimetric Modalities for Biomedical Research. Biological and Medical Physics, Biomedical Engineering. Springer, Cham. ISBN: 978-3-031-31852-8

Beam divergence and surface curvature effects in speckle metrology- Recent Developments by Murukeshan VM and N. Sujatha, Chapter 21 (pages: 391-403) in New directions in Holography and Speckle, edited by H. John Caulfield and Chandra S. Vikram, American Scientific Publishers, ISBN: 978-1588831019

Computational signal processing and analysis, Select Proceedings of ICNETS2, Volume I, Nandi, A.K., Sujatha, N., Menaka, R., Alex, J.S.R. (Eds.), Springer, ISBN 978-981-10-8354-9, 2018.

Endoscopic diagnostics in Biomedicine: Instrumentation and Applications, N. Sujatha, Momentum Press, New York, 2019, ISBN: 9781606509913.

J. Ramkumar and S. N. Unni (2025), "Demonstration of Residual Tumour Thickness Prediction Using Deep Learning Assisted In-Silico Mueller Matrix Polarimetry," 2025 IEEE Photonics Conference (IPC), Singapore, Singapore, 2025, pp. 1-2, doi: 10.1109/IPC65510.2025.11282065.

Kavini. V., K. P. Isaac and S. N. Unni (2025), "Laser Speckle Contrast Imaging Reveals Curcumin Antibacterial Activity," 2025 IEEE Photonics Conference (IPC), Singapore, Singapore, 2025, pp. 1-2, doi: 10.1109/IPC65510.2025.11282223.

D. Bajhaiya and S. N. Unni (2024), "Efficient colorectal polyps segmentation using a deep learning ensemble framework from colonoscopy images," 2024 14th International Conference on Pattern Recognition Systems (ICPRS), London, United Kingdom, 2024, pp. 1-6, doi: 10.1109/ICPRS62101.2024.10677811.

J. Meena and S. N. Unni (2024), "Non-Invasive Estimation of Moisture Content in Mushrooms Using Hyperspectral Imaging and Machine Learning-Based Stacking Regressor Model," 2024 14th International Conference on Pattern Recognition Systems (ICPRS), London, United Kingdom, 2024, pp. 1-7, doi: 10.1109/ICPRS62101.2024.10677805.

Priya Krishnamurthy, Sujatha Narayanan Unni, Sudha Narayani Rao, Krupakar Parthasarathy (2024), "Assessment of formation of Escherichia coli biofilm on solid substrates using laser speckle imaging parameters," Proc. SPIE 13006, Biomedical Spectroscopy, Microscopy, and Imaging III, 130060W ; https://doi.org/10.1117/12.3017338

Subitcha Jayasankar, Sujatha Narayanan Unni (2024), "Quantitative assessment of thin tumor depth and thickness in multi-layered silicone phantoms using low-resolution Raman spectroscopy," Proc. SPIE 13010, Tissue Optics and Photonics III, 1301007; https://doi.org/10.1117/12.3016759

Kiran Philip Isaac, Sujatha Narayanan Unni (2024), "Monitoring antibiotic susceptibility of Escherichia coli through analysis of fluorescence," Proc. SPIE 13006, Biomedical Spectroscopy, Microscopy, and Imaging III; https://doi.org/10.1117/12.3022408

V. Kavini and Sujatha Narayanan Unni (2023), "Fluorescence spectroscopy as a potential tool in determining the leaf age of Mangifera indica ", International Journal of Basic and Applied Biology, Krishi sanskriti publications International Journal of Basic and Applied Biology p-ISSN: 2394-5820, e-ISSN: 2349-5839, Volume 10, Issue 1; January-March, 2023, pp. 1-3 

Biruktawit Assefa, Sujatha Narayanan Unni (2023), "Developing a machine-learning-based classification system for detecting choroidal neovascularization (CNV) from optical coherence tomography (OCT) images," Proc. SPIE 13108, Women in Optics and Photonics in India 2023, 131080E (17 April 2024); https://doi.org/10.1117/12.3028988

Jyotisana Meena, Sujatha Narayanan Unni (2023), "Hyperspectral signal analysis for classification of leaves utilizing a machine-learning-based algorithm," Proc. SPIE 13108, Women in Optics and Photonics in India 2023, 131080V (17 April 2024); https://doi.org/10.1117/12.3030345 

Kavini V, Sujatha Narayanan Unni (2023), "Estimation and comparison of chlorophyll content in Hibiscus sabdariffa and Amaranthus viridis using absorbance and fluorescence spectroscopy", Proc. SPIE 12638, Women in Optics and Photonics in India 2022, 126380K (11 May 2023); https://doi.org/10.1117/12.2669985 

Priya Kriahnamurthy, Mahima Sharma B.S, Sujatha Narayanan Unni, Subalakshmi Balasubramanian, Sandhya Sundaram (2023), "Machine learning enabled classification of cancerous tissues using polarized speckle images ", Proc. SPIE 12638, Women in Optics and Photonics in India 2022, 126380S (11 May 2023); https://doi.org/10.1117/12.2670037 

Subitcha Jayasankar and Sujatha Narayanan Unni (2023), " Optimal core size of fiber optic Raman probes for sub-surface tumor depth prediction: in-silico investigations", Proc. SPIE 12638, Women in Optics and Photonics in India 2022, 126380B (11 May 2023); https://doi.org/10.1117/12.2669814 

Janaki Ramkumar and Sujatha Narayanan Unni (2023) , " Polarized Monte Carlo simulation for the study of skin cancer ", Proc. SPIE 12638, Women in Optics and Photonics in India 2022, 126380Z (11 May 2023); 
https://doi.org/10.1117/12.2670129 

Sadbhawna Kushwaha, Sujatha Narayanan Unni (2023), " Quantification of flow velocity in laser Doppler flowmetry-Monte Carlo simulation ", Proc. SPIE 12638, Women in Optics and Photonics in India 2022, 1263810 (11 May 2023); https://doi.org/10.1117/12.2670231 

Vysakh Vasudevan, Sujatha N.(2023), "Chromophore estimation from finite element derived skin tissue models: simulation and experiments", OPIC 2023 

Women in Optics and Photonics in India 2022 proceedings, SPIE Proceedings volume 12638, WOPI 2022, Dec-6-7, Bangalore, India, Anita Mahadevan-Jansen, Asima Pradhan, Sujatha Narayanan Unni 

Brahmiah Nallabothula and Sujatha Narayanan Unni(2022), "Analysis of Magnetic Field Induced by Cylindrical Electromagnetic Coil for Wireless Actuation of Magnetic Endocapsule Devices ", 2022 International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME), Maldives, Maldives, 2022, pp. 1-6,
doi: 10.1109/ICECCME55909.2022.9987846.  

Janaki Ramkumar and N.Sujatha(2022), "A Comparative Simulation Study on Depolarization of Spherical and Cylindrical Scatterers",  in Frontiers in Optics + Laser Science 2022 (FIO, LS), Technical Digest Series (Optica Publishing Group, 2022), paper JW4B.68. 

Priya Krishnamurthy, Mahima Sharma B.S, Sujatha Narayanan Unni, Leena Joseph and S. Anandan(2022), "Assessment of Collagen Orientation in Scleroderma Using Thin Tissue Section", in Frontiers in Optics + Laser Science 2022 (FIO, LS), Technical Digest Series (Optica Publishing Group, 2022), paper JTu4B.55.  

Subitcha Jayasankar and N.Sujatha(2022), "Robust Silicone-Based Layered Tissue Phantoms for Autofluorescence Imaging Applications", in Frontiers in Optics + Laser Science 2022 (FIO, LS), Technical Digest Series (Optica Publishing Group, 2022), paper JW4B.71.   

Subitcha Jayasankar and N.Sujatha(2022), “Soft tissue tumor size prediction using precise fiber-optic Raman probes: in silico investigations”, Proc. SPIE 12144, Biomedical Spectroscopy, Microscopy, and Imaging II, 1214404 (27 May 2022); doi: 10.1117/12.2619639 

Vysakh Vasudevan, Sujatha N.(2022), "Immediate subsurface skin blood flow monitoring using diffuse correlation spectroscopy: finite element simulations," Proc. SPIE 12147, Tissue Optics and Photonics II, 1214709 (19 May 2022);
https://doi.org/10.1117/12.2621523.

Deepak Bajhaiya, Sujatha Narayanan Unni(2022), “Deep learning-enabled classification of gastric ulcers from wireless capsule endoscopic images”, Medical Imaging 2022: Digital and Computational Pathology, 2022, vol. 12039. doi:10.1117/12.2622399

Anoosha Venkatraman Hegde and N. Sujatha(2022), "Laser speckle image analysis and classification of atherosclerotic plaques from carotid artery phantoms ", 2022 IEEE Photonics Conference (IPC) 

S. Jain and S. N. Unni(2021), “Estimation of Intralipid 20% Dilutions Using Machine Learning Enabled Diffuse Reflectance Spectroscopy”, In Frontiers in Optics + Laser Science 2021.

Priya Krishnamurthy and Sujatha Narayanan Unni(2021), “Assessment of skin fibrosis in skin models using laser speckle image analysis”, European Conferences on Biomedical Optics (ECBO) EM1A.39

Vysakh Vasudevan and N. Sujatha(2021), “Tissue chromophore concentration estimation aided by artificial neural network trained with finite element modelled diffuse reflectance spectrum”, European Conferences on Biomedical Optics(ECBO), ETu2A.45.

Anoosha Venkatraman Hegde and N. Sujatha (2021), "Differential imaging of dynamic scattering from laser speckle images for applications in perfusion imaging", Proc. SPIE 11600, Medical Imaging: Biomedical Applications in Molecular, Structural, and Functional Imaging, 1160018, https://doi.org/10.1117/12.2582083

Saloni Jain, Vysakh Vasudevan and N. Sujatha (2021), "Automated detection of optical phantom layer thickness using image analysis", Proc. SPIE 11600, Medical Imaging: Biomedical Applications in Molecular, Structural, and Functional Imaging, 1160017, https://doi.org/10.1117/12.2582125

P. John, N. J. Vasa, and N. Sujatha (2020), "Fiber-Optic Differential Absorption Low Coherence Interferometry Technique for Sensing Glucose Selectively," in 14th Pacific Rim Conference on Lasers and Electro-Optics, OSA Technical Digest, paper P3_11.

M. Sharma, S. Balasubramanian, S. Sundaram, and S. N. Unni (2020), "Polarimetric Evaluation of Bulk Samples and Unstained Sections of Colon Tissue," in Frontiers in Optics / Laser Science, B. Lee, C. Mazzali, K. Corwin, and R. Jason Jones, eds., OSA Technical Digest, paper JTu1B.15

Vivek Sivakumar, Sujatha N. Unni, Nilesh J. Vasa, Padma Srikanth, Ilakkiya Arumugam (2020), "Bacterial strain discrimination using a low-cost laser-induced breakdown spectroscopy technique under optimized growth conditions", Proc. SPIE 11362, Clinical Biophotonics, 113620A, https://doi.org/10.1117/12.2555722

Mahima Sharma B. S. and N. Sujatha (2019), "Differentiation of collagenous changes in scleroderma from unstained thin skin tissue sections using Mueller polarimetry image analysis", SPIE Optics and Photonics, Proceedings Volume 11132, Polarization Science and Remote Sensing IX; 1113214, https://doi.org/10.1117/12.2532095.

P. John, N. J. Vasa, N. Sujatha (2018), "Selective detection of glucose using supercontinuum source based dual wavelength low coherence interferometry", OSA TP033, ISBN 978-93-88653-41-1/2018

P. John, N. J. Vasa, N. Sujatha, S. R. Rao (2018), "Glucose sensing in human gingival tissue using supercontinuum source based frequency domain differential absorption optical coherence tomography", IEEE Sensors, pp. 1412- 1415/2018.

K. K. Srikarthikeyan, Sujatha Narayanan Unni (2018), "Quantitative single-exposure laser speckle contrast imaging", Proc. SPIE 10820, Optics in Health Care and Biomedical Optics VIII, 108200Q, https://doi.org.10.1117/12.2502071

Vivek Sivakumar, Sujatha N.,N. J. Vasa, Padma Srikanth (2018), "Low cost laser induced breakdown spectroscopy technique for detection of microorganisms", Proc. SPIE 10753, Ultrafast Nonlinear Imaging and Spectroscopy VI, 1075313 https://doi.org/10.1117/12.2322980

Sujatha N., Vysakh Vasudevan; Kavyakantha R.S (2018), “Spatially resolved diffuse optical correlation spectroscopy (SR-DOCS) for quantitative assessment of skin tissue perfusion matrix,” Proc. SPIE 10685, Biophotonics: Photonic Solutions for Better Health Care VI, 1068525 https://doi.org.10.1117/12.2307055.

Vysakh V., N. Sujatha (2018), “Light-tissue interaction modelling using COMSOL Multiphysics for multi-layered skin tissues,” COMSOL Conference 2018, Bangalore, India.

B. S. M. Sharma and N. Sujatha (2018), "Assessment of skin fibrosis using Mueller matrix polarimetry",3rd International Conference on Microwave and Photonics (ICMAP),Dhanbad.pp. 1-2, doi: 10.1109/ICMAP.2018.8354544

P. John, N. J. Vasa, N. Sujatha, S. R. Rao (2017), "Glucose sensing in oral tissue mimicking phantoms using supercontinuum laser source",Conference on Lasers and Electro-Optics - Pacific Rim, IEEE, pp. 1-4/2017.

Pauline John, Nilesh Vasa, Sujatha N , and Suresh Rao (2016), "Frequency Domain Optical Coherence Tomography for Measurement of Aqueous Glucose Using Super Continuum Laser Source at Wavelengths 1.6 µm and 2.3 µm", 13th International Conference on Fiber Optics and Photonics, OSA Technical Digest, Th3A.1.

Pauline John, Murali Manoj, N. Sujatha , N. J. Vasa and Suresh R Rao (2015), "Aqueous glucose measurement using differential absorption-based frequency domain optical coherence tomography at wavelengths of 1310 nm and 1625 nm", Proc. SPIE 9537, Clinical and Biomedical Spectroscopy and Imaging IV, 95371.

K. Udayakumar and N. Sujatha (2015), "Estimation of stress relaxation time for normal and abnormal breast phantoms using optical technique", Proceedings of SPIE, Vol. 9302, doi:10.1117/12.2081036.

N. Sujatha and Arnab Banerjee (2015), "An experimental model for minimizing errors in laser speckle contrast imaging for microcirculation analysis", Proceedings of SPIE, Vol. 9302, doi:10.1117/12.2077477.

Michael Raju and N. Sujatha (2015), "Diffuse reflectance based inverse Monte Carlo model for the estimation of the dependent scattering of the Intralipid 20% using a simplified two fiber oblique geometry set up", Proceedings of SPIE, Vol. 9325, doi: 10.1117/12.2079203.

Suresh Anand and N. Sujatha (2015), "Effects of scattering and absorbing medium in the fluorescence conversion efficiency of the physical tissue models", Proceedings of SPIE, Vol. 9325, doi: 10.1117/12.2078870.

K. Udayakumar, N. Sujatha and A. R. Ganesan (2015), "Digital speckle pattern interferometry based anomaly detection in breast mimicking phantoms-a pilot study", Proceedings of SPIE, Vol. 9417, doi: 10.1117/12.2081594.

A. K. BalaNivetha and N. Sujatha (2015), "Fiber based in vivo imaging of epithelial FAD fluorescence: experiments and simulations", Proceedings of SPIE, Vol. 9417, doi:10.1117/12.208056.

A. K. Jayanthy, N. Sujatha, M. Ramasubba Reddy and V. B. Narayanamoorthy (2014), "Non-invasive blood flow assessment in diabetic foot ulcer using laser speckle contrast imaging technique", Proc. SPIE 8952, Biomedical Applications of Light Scattering VIII, 89521D, doi:10.1117/12.2041874.

N. Sujatha, K. BalaNivetha and Akshay Singhal (2014), "Optimal source to detector separation for extracting sub-dermal chromophores in fiber optic diffuse reflectance spectroscopy: a simulation study", Proceedings of SPIE, Vol. 9129, doi:10.1117/12.2048869.

K. BalaNivetha and N. Sujatha (2014),"Understanding the role of hemoglobin in altering multi-layered tissue intrinsic fluorescence in visible region using fiber optics", Proceedings of SPIE, Vol.9098, doi: 10.1117/12.2053634.

R. Sivakumar, N. Sujatha (2014), "Laser based tomographic system for visualization and characterization of tissue optical phantoms", Proceedings of the 2014 International Conference on Communications, Signal Processing and Computers, ISBN: 978-1-61804-215-6.

N. Sujatha and Cerine Lal (2012), "Laser based signal and image fractal analysis for assessment of blood flow", Proceedings of SPIE Vol. 8427, Biophotonics: Photonic Solutions for Better Health Care III, 84272M, doi:10.1117/12.921743.

Bala Nivetha K, and N. Sujatha (2012), "Assessment of surface roughness based on laser Image autocorrelation method", Proceedings of international conference on biomedical signals, systems and imaging, IIT Madras.

Cerine Lal, Arnab Banerjee and N. Sujatha (2012), "Fractality Vs Contrast of laser speckle image: A tool for assessing flow velocity and scatterer concentration in phantom body fluids", presented at 1st international meeting on Biophotonics, Tel Aviv, Israel Dec 9-11.

B. S. Suresh Anand, N. Sujatha, V. B. Narayana Murthy, V. Sheshadri and R. Poddar (2011), "Clinical applications of diffuse reflectance spectroscopy in normal and prediabetic subjects - A pilot study". IEEE Proceedings on the Defence Science and Research Expo, Singapore, DOI:10.1109/DSR.2011.6026804.

N. Sujatha, A. K. Jayanthy and M. Ramasubba Reddy (2011), "Laser speckle contrast imaging for assessing flow velocities and scatterer concentration in capillary phantoms", IEEE Proceedings on Lasers and Electro-Optics Europe conference, Munich, doi: 10.1109/CLEOE.2011.5943311.

A. K. Jayanthy, N. Sujatha and M. Ramasubba Reddy (2011), "Laser speckle contrast imaging for perfusion monitoring in burn tissue phantoms", International federation of medical and biological engineering (IFMBE) proceedings, 35, pp. 443-446, Springer, ISBN 978-3-642-21729-6.

A. K. Jayanthy, N. Sujatha and M. Ramasubba Reddy (2011), "Non invasive capillary blood flow measurement: Laser speckle and Laser Doppler", Proceedings of International Conference on Bioinformatics, Computational Biology and Biomedical Engineering (ICBCBBE), Paris, pp. 1214-1219.

S. Gayathri and N. Sujatha (2011), "Fractal dimension characterization of in vivo laser Doppler flowmetry signals", Physics Proceedia Vol. 19, pp. 49-54.

N. Sujatha, B.S. Suresh Anand, A. K. Jayanthy, V. B. Narayana Murthy, Sheshadri and Richa Poddar (2011), "Non invasive assessment of tissue oxygenation and blood flow as a tool for staging diabetes", AIP Conference Proceedings, Vol. 1391, http://dx.doi.org/10.1063/1.3643662.

K. Jayanthy, N. Sujatha and M. Ramasubba Reddy (2010), "Laser speckle contrast imaging based blood flow analysis in normals and in patients with skin diseases", Proceedings of ICCESS, WASET 69, Singapore.

S. Sajitha and N. Sujatha (2010),"Vocal dose measurements and its potential applications", Proceedings of National Systems Conference, Dec 10-12, NIT Suratkal.

A. K. Jaynathy, N. Sujatha and M. Ramasubba Reddy (2009), "Laser speckle contrast imaging for analyzing static scatterer concentration in body fluids", Proceedings of International Conference on Optics and Photonics, C1.5.

Sujatha, N., and Murukeshan, V. M. (2004), "A dual mode imaging fiberscope system for colon cancer diagnosis",Proceedings of International Conference on Optics and Photonics Cochin, Kerala, pp. 13.

Sujatha, N., Murukeshan, V. M., Ong, L. S., and Seah, L. K. (2004), "Application of Digital speckle shearography for NDT of inner curved surfaces of tissue/tissue-like phantoms", International Conference, Optics ad photonics in technology frontier , Tokyo, Japan, 12-15 July.

S. Suresh Anand and N. Sujatha (2010), "Quantification of tissue oxygenation levels using diffuse reflectance spectroscopy", Proceedings of SPIE, Vol. 8173, DOI:10.1117/12.897811.

Murukeshan, V. M., Sujatha, N., Seah, L. K., and Ong, L. S. (2005), "An all fiber optic endoscope probe distal end for disease diagnosis in body cavities", Proceedings of SPIE, 5651, pp. 321-331.

Murukeshan, V. M., Sujatha, N., Ong, L. S. and Seah L. K. (2005), "A flexible endoscope system for dual mode intracavity investigations", Proceedings of SPIE, Vol. 5686, pp.353-359.

Murukeshan, V. M., Sujatha, N., Ong, L. S., Seah, L. K. (2003), "Imaging considerations in fiber optic endoscopy system for the gastrointestinal endoscopy" Proceedings of SPIE, 5143, pp.170-180.

B. Nallabothula and S. N. Unni (2026), "Real-time data-driven localization system for magnetic endocapsule devices," in IEEE Sensors Journal,https://doi.org/10.1109/JSEN.2026.3681510.

V. Sivakumar, S. N. Unni, and N. J. Vasa (2026), “ Leveraging Laser-Induced Breakdown Spectroscopy and Machine Learning Methods for Rapid Detection of AMR Profiles in Pathogenic Bacterial Isolates,” Journal of Biophotonics 19, no. 3 (2026): e70249, https://doi.org/10.1002/jbio.70249.

Brahmaiah Nallabothula, Sujatha Narayanan Unni (2026), Design and development of dynamic electromagnetic system for actuation of magnetic endocapsule devices, Journal of Magnetism and Magnetic Materials, Volume 643, 173940, ISSN 0304-8853, https://doi.org/10.1016/j.jmmm.2026.173940.

Jyotisana Meena, and Sujatha Narayanan Unni, (2026), Transparent Non-destructive Estimation of Moisture Content In Vegetables Using Hyperspectral Imaging, Multi-target regression pipeline approach and Explainable AI, Engineering Research Express, http://iopscience.iop.org/article/10.1088/2631-8695/ae3ba0

Maitrayee Trivedi, V. Kavini, K.P. Sayuj, Sujatha Narayanan Unni (2025), Machine learning integrated visible diffuse reflectance spectroscopy for in-situ analysis of phosphorus status in Arabidopsis plants under soilless culture, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 127321, ISSN 1386-1425, https://doi.org/10.1016/j.saa.2025.127321.

Kavini V., Maitrayee Trivedi, Sudha Karthik, Vishal Balaji, Nishima Wangoo, Rohit Kumar Sharma, Sujatha Narayanan Unni; Smart MDD—A portable optical device for rapid, automated, and ultra-sensitive detection of malathion in liquid samples. Rev. Sci. Instrum. 1 September 2025; 96 (9): 095203. https://doi.org/10.1063/5.0277097

Meena J, Narayanan Unni S (2025) Effective Multiclass Grapevine Leaves Disease Classification Using Hyperspectral Imaging and Optimized Artificial Neural Network. Cureus Journal of Computer Science 2: es44389-025-05883-5. doi:https://doi.org/10.7759/s44389-025-05883-5

Gimmi Guruprasad Engoor, Sowmya Selvaraj, Nickita Acharya, Vignesh Muthuvijayan, Sivarama Krishnan, Sujatha Narayanan Unni, Nilesh Jayantilal Vasa (2025), Laser polarization induced surface structuring of 316L stainless steel and influence on biocompatibility and antibacterial performance, Results in Surfaces and Interfaces, Volume 19,100547, ISSN 2666-8459,https://doi.org/10.1016/j.rsurfi.2025.100547.

Gimmi Guruprasad Engoor, Sowmya Selvaraj, Vignesh Muthuvijayan, Satyesh Kumar Yadav, Sujatha Narayanan Unni, Nilesh Jayantilal Vasa (2025), ZnTiO3-based Nanocomposite Coating Synthesized via Reactive Magnetron Co-Sputtering for Antibacterial Application, Ceramics International, ISSN 0272-8842, https://doi.org/10.1016/j.ceramint.2025.05.279.

Brahmaiah Nallabothula and Sujatha Narayanan Unni (2025), Design and development of spatial data acquisition system for magnetic endocapsule location tracking applications, JINST 20 P05003, https://iopscience.iop.org/article/10.1088/1748-0221/20/05/P05003

Krishnamurthy, P., Shetty, R., Isaac, K.P., Unni, S.N., Rao, S.S. and Parthasarathy, K. (2025), Differentiation of Bacterial Species in Liquid Culture Using Laser Speckle Contrast Imaging. J. Biophotonics e202400565. https://doi.org/10.1002/jbio.202400565

Janaki Ramkumar and N Sujatha (2025), Deep learning-assisted identification and localization of ductal carcinoma from bulk tissue in-silico models generated through polarized Monte Carlo simulations, Biomedical Physics & Engineering Express, http://iopscience.iop.org/article/10.1088/2057-1976/adb495

Gimmi Guruprasad Engoor, Vimal Kumar Dewangan, Sachin Latiyan, T S Sampath Kumar, N Sujatha, Palani I A and Nilesh J Vasa (2025), Synthesis and characterization of TiO2-ZnO composite thin films for biomedical applications, Biomedical Materials, http://iopscience.iop.org/article/10.1088/1748-605X/adb118

Kiran Philip Isaac, Priya Krishnamurthy, Sujatha Narayanan Unni, Sudha Narayani Rao, Krupakar Parthasarathy (2024), Laser Speckle Image analysis for identifying the minimum lethal concentration of ampicillin in Escherichia coli liquid cultures, Journal of Microbiological Methods, 107068, ISSN 0167-7012,  https://doi.org/10.1016/j.mimet.2024.107068.

Subitcha Jayasankar, Sujatha Narayanan Unni (2024), " Multi-layered silicone-based breast tissue phantom for multi-modal optical spectroscopy," Biomedical Physics & Engineering Express, http://iopscience.iop.org/article/10.1088/2057-1976/ad785e

Meena, Jyotisana and Sujatha, N (2024), "Design and development of a low-cost hyperspectral imaging setup via a machine-learning based approach," Engineering Research Express, http://iopscience.iop.org/article/10.1088/2631-8695/ad76fb

Subitcha Jayasankar, Sujatha Narayanan Unni (2024), " Temporal fiber-optic fluorescence study of FAD-NADH interactions in phantoms for potential applications in rapid liquid optical biopsy procedures," Results in Optics, 100707, ISSN 2666-9501, https://doi.org/10.1016/j.rio.2024.100707

Brahmaiah Nallabothula, Sujatha Narayanan Unni (2024)," Multi-objective design optimization of electromagnetic coil for effective actuation of magnetic endocapsule devices", Sensors and Actuators A: Physical, Volume 372, 2024, 115359, ISSN 0924-4247, https://doi.org/10.1016/j.sna.2024.115359

Deepak Bajhaiya, Sujatha Narayanan Unni (2024), "Deep learning-enabled detection and localization of gastrointestinal diseases using wireless-capsule endoscopic images", Biomedical Signal Processing and Control, Volume 93, 106125, ISSN 1746-8094, https://doi.org/10.1016/j.bspc.2024.106125.

Mahima Sharma, Chitra Shaji, and Sujatha Narayanan Unni (2024), "Approach to fiber-based optical polarimetry for tissue assessment: system calibration and application," Appl. Opt. 63, 1888-1894. https://doi.org/10.1364/AO.501447

Sharma, M., Unni, S.N., Shaji, C. et al. (2024) Characterizing colon cancer stages through optical polarimetry-assisted digital staining. Lasers Med Sci 39, 59. https://doi.org/10.1007/s10103-024-04006-1

Priya Krishnamurthy, Sujatha Narayanan Unni, Subitcha Jayasankar (2024), "Spatio-temporal feature analysis of laser speckle images for simultaneous quantification of skin thickness and perfusion demonstrated using in-vitro scleroderma phantoms", Optics and Lasers in Engineering, Volume 176, 2024, 108057, ISSN 0143-8166, https://doi.org/10.1016/j.optlaseng.2024.108057

Vysakh Vasudevan,  Sujatha Narayanan Unni (2023), "Skin microcirculatory responses: A potential marker for early diabetic neuropathy assessment using a low-cost portable diffuse optical spectrometry device", J. Biophotonics 2023, e202300335. https://doi.org/10.1002/jbio.202300335 

Deepak Bajhaiya, Sujatha Narayanan Unni, A.K. Koushik(2023), "Deep learning-powered generation of artificial endoscopic images of gastrointestinal tract ulcers", iGIE, ISSN 2949-7086, https://doi.org/10.1016/j.igie.2023.08.002

Anoosha Venkataraman Hedge and N Sujatha (2023), "Machine learning integrated laser speckle image analysis for the simultaneous extraction of flow and scatterer concentration from capillary phantoms", IOP Science, Eng. Res. Express 5 025021, DOI: 10.1088/2631-8695/accd3b

Subitcha Jayasankar, Deepak Bajhaiya, Sujatha N(2022), “Deep learning-enabled sift tissue tumor localization using spatially offset Raman spectral analysis: in-silico investigations”, Journal of Physics D: Applied Physics (Translational biophotonics: Special issue), https://iopscience.iop.org/article/10.1088/1361-6463/ac8126/pdf

Shaji, C., Sharma, M. & Unni, S.N.(2022), “Optical polarization response of collagen—role in clinical cancer diagnostics: part 2”, ISSS Journal of Micro and Smart Systems

Sharma, M., Shaji, C. and Narayanan Unni, S.(2022), “Optical polarization response of collagen: role in clinical cancer diagnostics—part 1”, ISSS Journal of Micro and Smart Systems

Vasudevan, V, Narayanan Unni, S(2022), “Quantification of soft tissue parameters from spatially resolved diffuse reflectance finite element models., International Journal for Numerical Methods in Biomedical Engineering”, https://doi.org/10.1002/cnm.3546

Mahima Sharma, Sujatha Narayanan Unni, Subalakshmi Balasubramanian, Sandhya Sundaram, Priya Krishnamurthy and Anoosha Hegde (2021), "Histopathological correlations of bulk tissue polarimetric images: case study, Journal of Biophotonics", https://doi.org/10.1002/jbio.202000475.

Vysakh Vasudevan, Kavyakantha R. S., K. BalaNivetha and N. Sujatha (2020), “Finite element multilayer skin model for applications in diffuse optical spectroscopy”, Asian Journal of Physics,29(1&2):115-127

P. John, N. J. Vasa, N. Sujatha and S. R. Rao (2019), "Glucose Sensing in Ex-vivo Human Gingival Tissue with Enhanced Sensitivity in Combination Band", IEEE Sensors Journal., doi: 10.1109/JSEN.2019.2917378

Krishnapriya Venugopal, Sujatha Narayanan Unni, Annika Bach, Catharina Conzen and Ute Lindauer (2019), "Assessment of cerebral hemodynamics during neurosurgical procedures using laser speckle image analysis", Journal of Biophotonics, https://doi.org/10.1002/jbio.201800408

Pauline John, Nilesh J. Vasa, N. Sujatha (2019), Glucose sensing in the anterior chamber of the human eye model using supercontinuum source based dual wavelength low coherence interferometry, Sensing and Bio-Sensing Research, Volume 23, 100277, ISSN 2214-1804, https://doi.org/10.1016/j.sbsr.2019.100277

Bala Nivetha Kanakaraj, Sujatha Narayanan Unni (2018), “Model-based quantitative optical biopsy in multilayer in-vitro soft tissue models for whole field assessment of nonmelanoma skin cancer,” Journal of Medical Imaging, 5(1), 014506 (2018), doi: 10.1117/1.JMI.5.1.014506.

Adeeba Fathima, Mahima Sharma B.S., Sujatha, N. (2018), "Selective sensitivity of Mueller imaging for tissue scattering over absorption changes in cancer mimicking phantoms", Optics and Lasers in Engineering, Volume 102, Pages 112-118, ISSN 0143-8166, https://doi.org/10.1016/j.optlaseng.2017.10.016.

K. Bala Nivetha and Sujatha, N (2017), “Development of thin skin mimicking bilayer solid tissue phantoms for optical spectroscopic studies” Journal of Biomedical Optics Express, 8 (7), 3198-3212.

Michael Raju and Sujatha Narayanan Unni (2017) Concentration-dependent correlated scattering properties of Intralipid 20% dilutions” Applied Optics, 56(4):1157-1166.

K. Udayakumar, N. Sujatha and A. R. Ganesan (2017), “Quantitative assessment of soft tissue deformation using digital speckle pattern interferometry: studies on phantom breast models” Journal of Medical Imaging, 4(1), 016001-016009.

N. Sujatha, B. S. Suresh Anand, K. BalaNivetha, V. B. Narayana Murthy, S. Sheshadri and Richa Podda (2015), "Assessment of microcirculatory hemoglobin levels in normal and diabetic subjects using diffuse reflectance spectroscopy: a pilot study", Journal of Applied Spectroscopy, Vol. 82 (3),pp.432-437.

C. Lal and N. Sujatha (2015), Correlation analysis of laser Doppler flowmetry signals- a potential non-invasive tool to assess microcirculatory changes in diabetes mellitus, Journal of Medical and Biological Engineering and Computing, 53, 557-566.

B. S. Suresh Anand and N. Sujatha (2014), "Diffuse reflectance spectroscopy for monitoring diabetic foot ulcer-A pilot study", Optics and Lasers in Engineering 53, pp. 1-5.

Cerine Lal, A. Banerjee and N. Sujatha (2013),"Role of contrast and fractality of laser speckle image in assessing flow velocity and scatterer concentration in phantom body fluids", Journal of Biomedical Optics ,18 (11), pp. (111419-1)- (111419-7).

B. S. Suresh Anand and N. Sujatha (2012), Fluorescence quenching effects of hemoglobin on simulated tissue phantoms in the UV-Vis range, Measurement Science and Technology, 23,025502-1 - 025502-6.

B. S. Suresh Anand and N. Sujatha (2011), "Effects of Intralipid-10% in fluorescence distortion studies on liquid tissue phantoms in UV range", Journal of Biophotonics, 4 (1-2),92-97.

A. K. Jayanthy, N. Sujatha and M. Ramasubba Reddy (2011) "Laser speckle contrast imaging for analyzing static scatterer concentration in body fluids", Optics and lasers in Engineering, Vol. 49, pp. 553-556.

A. K. Jayanthy, N. Sujatha and M. Ramasubba Reddy (2011), "Measuring Blood flow: techniques and applications: A review", International journal of research and review in applied sciences, Vol. 6, pp.203-216.

Murukeshan, V. M., Sujatha, N., Ong, L. S., Sing. A. and Seah, L. K. (2007), "Effect of image fiber on speckle fringe pattern in image fiber guided DSPI endoscopy", Optics and Laser Technology, 39 (3), pp. 527-531.

Murukeshan, V. M. and Sujatha, N. Unni (2007), "All fiber optic based multi-speckle modality endoscopic system for imaging medical cavities", Review of Scientific Instruments, 78 (5), pp. 053106-1 to 053106-8.

Sujatha N., Murukeshan, V. M., Rajendran, S., Ong, L. S., and Seah, L. K., (2005),"Non-destructive inspection of inner surfaces of technical cavities using digital speckle shearography. Nondestructive Testing and Evaluation", 20 (1), pp. 25-34.

Sujatha N, Murukeshan V. M and Ganesan A. R., (2005), "Effect of illumination beam divergence in DSPI fringe formation", Journal of Holography and Speckle", 2 (1), pp. 20-25.

Murukeshan V. M., N. Sujatha (2005) Integrated simultaneous dual-modality imaging endospeckle fluoroscope system for early colon cancer diagnosis", Optical Engineering Letters, 44(11), pp. 110501.1 - 110501.3

Murukeshan V. M., N. Sujatha (2004), "Digital speckle pattern interferometry for deformation analysis of inner surfaces of cylindrical specimens". Applied Optics, 43 (12), pp. 2400-2408.

Sujatha N., Murukeshan, and Ganesan, A. R. (2004), "Effect of in-plane sensitive component on speckle fringe formation on curved inner surfaces of engineering specimens", Journal of Holography and Speckle, 1 (2), pp. 63-68.

Sujatha N., and Murukeshan, V. M. (2004), "Non-destructive inspection of tissue/tissue like phantom curved surfaces using digital speckle shearography", Optical Engineering, 43(12), pp. 3055-3060.

Sujatha N., Murukeshan, V. M., Ong, L. S., and Seah, L. K. (2003), "An all fiber optic system modeling for the gastrointestinal endoscopy: design concepts and fluorescence analysis", Optics Communications, 219, pp. 71-79.