Praveena Manimunda

Biography

Dr. Praveena Manimunda is an application scientist at HORIBA, where he specializes in developing advanced metrology methods utilizing Photoluminescence and Raman spectroscopy. With a Ph.D. from the Indian Institute of Science (IISc), Bangalore, and postdoctoral research experience at McGill University in Canada, Dr. Manimunda brings over a decade of industry expertise in materials science and semiconductor analysis. He has authored and co-authored more than 30 scientific publications, contributing significantly to the advancement of optical spectroscopy techniques in cutting-edge research and industrial applications.

Articles by Praveena Manimunda

The semiconductor industry is currently experiencing a strategic shift toward Cubic Silicon Carbide (3C-SiC) for next-generation power electronics. This wide-bandgap (WBG) material offers exceptional electron mobility and thermal stability, positioning it as a superior candidate for MOSFETs and Schottky barrier diodes.

Detecting yield-killing defects in Micro-LED wafers requires sub-micron metrology. Multimodal spectroscopy identifies micro-pits and lattice stress in GaN (Gallium Nitride) epi-wafers by mapping photoluminescence (PL) "cold spots" and carrier lifetimes via time-resolved photoluminescence (TRPL).

Advanced material characterization using multimodal spectroscopy is essential to realizing the full potential of wide-bandgap (WBG) semiconductors like silicon carbide (SiC) and gallium nitride (GaN).

Other Resources by Author Praveena Manimunda

Manimunda P, Wang T, Bhowmick S, et al. A natural impact-resistant bicontinuous composite nanoparticle coating. Nat Mater. 2020.

Samanta A, Zhang Y, Bhowmick S, Manimunda P, et al. Atomically thin gallium layers from solid-melt exfoliation. Science. 2018.

Manimunda P, Al-Azizi A, Kim SH, et al. Shear-induced structural changes and origin of ultralow friction of hydrogenated diamond-like carbon (DLC) in dry environment. ACS Appl Mater Interfaces. 2017.

Mahjoubi H, Buck E, Manimunda P, Farivar R, et al. Surface phosphonation enhances hydroxyapatite coating adhesion on polyetheretherketone and its osseointegration potential. Acta Biomater. 2017.

Samanta A, Sarkar S, Manimunda P, et al. Metal immiscibility route to synthesis of ultrathin carbides, borides, and nitrides. Adv Mater. 2017.

Susarla S, Manimunda P, Morais Jaques Y, et al. Deformation mechanisms of vertically stacked WS2/MoS2 heterostructures: the role of interfaces. ACS Nano. 2018.

Mishra MK, Mishra K, Asif SAS, Manimunda P. Structural analysis of elastically bent organic crystals using in situ indentation and micro-Raman spectroscopy. Chem Commun. 2017;53(97):13035-13038.

Kochat V, Rajak P, Krishnamoorthy A, Manimunda P, et al. Structural phase transformation in strained monolayer MoWSe₂ alloy. ACS Nano. 2018.

Olszta M, Silverstein J, Yadav DR, Manimunda P, et al. Lattice misorientation evolution and grain refinement in Al-Si alloys under high-strain shear deformation. Materialia. 2021.

Manimunda P, Hintsala E, Asif S, Mishra MK. Mechanical anisotropy and pressure induced structural changes in piroxicam crystals probed by in situ indentation and Raman spectroscopy. JOM. 2017.

Goldbaum D, Manimuda P, Kamath G, Descartes S, et al. Tribological behavior of TiN and Ti(Si,C)N coatings on cold sprayed Ti substrates. Surf Coat Technol. 2016;291:264-275.

Mishra MK, Mahur P, Manimunda P, et al. Recent advances in nanomechanical measurements and their application for pharmaceutical crystals. Mol Pharm. 2023.

Biswas K, Basu J, Sen S, Pradeep KG, Praveena M, et al. Micro-mechanisms of deformation and strengthening during high pressure torsion of CoCuFeMnNi high entropy alloy. Materialia. 2023.

Manimunda P, Asif SAS, Mishra MK. Probing stress induced phase transformation in aspirin polymorphs using Raman spectroscopy enabled nanoindentation. Chem Commun. 2019.

Praveena M, Guha K, Ravishankar A, Biswas SK, et al. Total internal reflection Raman spectroscopy of poly(alpha-olefin) oils in a lubricated contact. RSC Adv. 2014.

Manimunda P, Hintsala E, Stauffer D, et al. Correlated post-mortem Raman and TEM investigation of nanoindentation induced structural changes in silicon as a function of temperature. Microsc Microanal. 2020.

Praveena M, Bain CD, Jayaram V, Biswas SK. Total internal reflection (TIR) Raman tribometer: a new tool for in situ study of friction-induced material transfer. RSC Adv. 2013.

Susarla S, Manimunda P, Jaques YM, et al. Strain-induced structural deformation study of 2D MoxW_(1-x)S₂. Adv Mater. 2019.

Praveena M, Jayaram V, Biswas SK. Friction between a steel ball and a steel flat lubricated by MoS₂ particles suspended in hexadecane at 150 °C. Ind Eng Chem Res. 2012.

Manimunda P, Rangel JL, Brites J, Hocrelle D, Ndi F, et al. Multi-modal spectroscopic characterization and defect identification in SnO₂/Ga₂O₃ nanostructures. Academic OUP. 2024.

Manimunda P, Ndi F. New platform for multimodal spectroscopic characterization of semiconductors. Analytical Solutions in Megatrends. 2022.

Manimunda P, Filleter T, Egberts P, et al. Nano-meter scale plasticity in KBr studied by nanoindenter and force microscopy. MRS Online Proc Libr. 2009.

Manimunda P. Spectroscopic characterization and detection of yield-killing defects in micro-LED wafers. EDFA Tech Artic. 2025.

Makarem R, Rangel JL, Manimunda P, Diaz EN, et al. Multimodal spectroscopy techniques for nanostructured materials characterization. HORIBA.

Krishnamoorthy A, Manimunda P, et al. Strain-induced structural phase transformation in two-dimensional molybdenum tungsten diselenide alloy. Paper presented at: APS March Meeting; 2019.

Manimunda P, Stauffer D. Interfacial phenomenon and nanomechanics of wound dressing hydrogels. Tissue Eng. 2022.

Buck E, Manimunda P, et al. Polymer biomaterial surface modification: the key to integration. Am Chem Soc. 2019.

Manimunda P, Nakanishi Y, Jaques YM, Susarla S, et al. Nanoscale deformation and friction characteristics of atomically thin WSe₂ and heterostructure using nanoscratch and Raman spectroscopy. 2D Mater. 2017.

Guha K. Molecular tribology. Durham University; 2011.

Mahjoubi H. Surface modification of synthetic polymers for orthopedic applications via diazonium chemistry: a simple, biocompatible and nondestructive route. 2015.

Alidokht SA. Cold spray deposition of Ni-WC composite coatings and their sliding and erosive wear behaviour. 2018.

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