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Dr. Raghunandan Ummethala

ABOUT
NAME: Dr. Raghunandan Ummethala

M.TECH: IIT Kanpur, India

E- MAIL: raghu.DOT.ummethala@nitandhra.DOT.ac.DOT.in

POSITION: Assistant Professor

PhD: TU Dresden/IFW Dresden, Germany

PHONE: +91 0000000000


AREAS OF INTEREST: 1. Additive Manufacturing 2. Biomaterials for hard tissue replacements 3. Chemical Vapor Deposition and Carbon nanostructures 4. Corrosion Engineering 5. Electrochemical Energy Storage

PROFILE

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Research Interests:

Additive Manufacturing

Biomaterials for hard tissue replacements

Corrosion Science and Engineering

Chemical Vapor Deposition of Carbon nanostructures

Electrochemical Energy Storage

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Courses taught

1. Physical Metallurgy (MM201)

2. Non-ferrous Extractive Metallurgy (MM403)

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Education

2010-2014   Doctor of Engineering (Dr.-Ing./PhD) in Materials Science
                    Dresden University of Technology (TU Dresden) / IFW Dresden, Germany
     Grade: Magna cum Laude (Very Good)
Dissertation: Growth and field emission characteristics of carbon nanotubes on diverse substrate materials.


2007-2010   Master of Technology (M. Tech), Materials and Metallurgical Engineering
                     Indian Institute of Technology Kanpur (IIT Kanpur), India
     CPI: 9.17/10.00
     Dissertation: In vitro corrosion and mineralisation of novel Ti-Si-C alloy.

 

 2003-2007   Bachelor of Technology (B. Tech), Materials and Metallurgical Engineering
                     Mahatma Gandhi Institute of Technology (MGIT), Hyderabad, India
     Grade: First Class with Distinction (79.6%)
Dissertation: Tribological behaviour of Diamond-Like Carbon (DLC) films on Aluminum alloy substrates (ARCI Hyderabad).

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List of Publications

13. R. Ummethala, P. S. Karamched, S. Rathinavelu, K. G. Prashanth et al., “Selective laser melting of high-strength, low-modulus Ti-35Nb-7Zr-5Ta alloy” Materialia (2020): 100941.

12. Z. Wang, R. Ummethala, N. Singh, S. Tang, C. Suryanarayana, J. Eckert, K. G. Prashanth, “Selective Laser Melting of Aluminum and Its Alloys” Materials 13.20 (2020): 4564.

11. N. Singh, R. Ummethala, P. Hameed, G. Manivasigam, K. G. Prashanth, ‘Selective laser manufacturing of Ti-based alloys and composites: Impact of process parameters, application trends and future prospects’ Materials Today Advances, Vol. 8 (2020):100097.

10. N. Singh, R. Ummethala, P. Hameed, S. Rathinavelu, K. G. Prashanth, ‘Competition between densification and microstructure of functional materials by Selective Laser Melting’ Material Design and Processing Communications, 1-7 (2020).

09. R. Ummethala, L. Giebeler, M. Rümmeli, J. Eckert, ‘Flexible, Free-standing 3D interconnected carbon nanotube foam as self-retaining sulfur hosts for high performance Lithium Sulfur battery cathodes’ Energy Storage Materials 10, 206, (2018).

08. M. Madian, R. Ummethala, L. Giebeler, M. Rümmeli, et al. ‘Ternary CNTs@TiO2/CoO nanotube composites: improved anode materials for high performance lithium ion batteries’ Materials 10(6) (2017): 678.

07. R. Ummethala, D. Wenger, J. Eckert et al., ‘Effect of substrate material on the growth and field emission characteristics of large-area carbon nanotube forests’ J. Appl. Phys., 119 (2016): 044302.

06. B. Minella, R. Ummethala, M. H. Rümmeli, et al., ‘Silicon carbide embedded in carbon nanofibres: structure and band gap determination’ Phys. Chem. Chem. Phys., 16, (2014): 24437.

05. D. Leberl, R. Ummethala, A. Leonhardt, et al., ‘Characterization of carbon nanotube field emitters in pulsed operation mode’ J. Vac. Sci. Technol., B, Vol. 31, (2013).

04. R. Ummethala, A. Leonhardt, J. Eckert, et al. ‘A comparitive study of various supported catalysts on the growth of aligned carbon nanotube forests on aluminium foils’ Chem. Vap. Deposition 18, (2012): 326.

03. V. O. Khavrus, M. Weiser, M. Fritsch, R. Ummethala, M. G. Salvaggio, A. Leonhardt, et al., ‘Application of carbon nanotubes directly grown on aluminum foils as electric double layer capacitor electrodes’ Chem. Vap. Deposition 18 (2012) 53.

02. R. Ummethala, F. Despang, M. Gelinsky, B. Basu, ‘In vitro corrosion and mineralisation of novel Ti-Si-C alloy’ Electrochim. Acta, Vol. 56 (2011) 3809.

01. S. Nath, R. Ummethala, B. Basu, ‘Fretting wear behavior of calcium phosphate-mullite composites in dry and albumin-containing simulated body fluid conditions’ J. Mater. Sci. Mater. Med. 21, (2010):1151.

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List of Conference Publications/Posters

08. R. Ummethala, E. Ivanov, J. Eckert, K. G. Prashanth, ‘Additive Manufacturing of beta-titanium alloys for hard tissue replacements’, PPM 2019, Marmaris, Turkey, 2019.

07. N. Singh, R. Ummethala, A. Aggarwal, K. G. Prashanth, ‘Titanium matrix composites by selective laser melting’, PPM 2019, Marmaris, Turkey, 2019.

06. R. Ummethala, D. Leberl, S. Tedde, A. Leonhardt, ‘Enhancement of electron field emission from MWCNTs’, InnoCNT Annual Congress, Stuttgart, Germany, 2013.

05.  V. Khavrus, R. Ummethala, N. L. Stepina, M. G. Salvaggio, E. M. M. Ibrahim, A. Leonhardt, ‘Design of the thermal CVD technique for the growth of multi-walled carbon nanotubes on metal surfaces’  

The fourteenth international young scientists conference: Optics & High Technology Material Science, Taras Shevchenko National University of Kyiv, Ukraine, 2013.

04. R. Ummethala, D. Leberl, A. Leonhardt, J. Eckert, ‘High current density and long-term electron emission from optimized and patterned VACNTs for x-ray tomography applications’ 

The fourteenth international conference on the science and application of nanotubes, NT13, Aalto University, Helsinki, Finland, 2013.

03. D. Leberl, R. Ummethala, Y. Thomann, S. Tedde, A. Leonhardt, ‘Field Emission from Carbon nanostructures’, InnoCNT Annual Congress, Bayreuth, Germany, 2012.

02. R. Ummethala, V. Khavrus, M. G. Salvaggio, A. Leonhardt, ‘Direct growth of vertically aligned carbon nanotubes on aluminum foils over large areas’ 

The twelfth international conference on the science and application of nanotubes, NT11, University of Cambridge, UK, 2011.

01. V. Khavrus, R. Ummethala, M. Weiser, M.  Fritsch, M. G. Salvaggio, M. Schneider, M. Kusnezoff, A. Leonhardt, ‘CCVD Of Aligned Carbon Nanotubes on Aluminium Foils And Their Tests As Components Of Supercapacitors’ 

The twelfth international conference on the science and application of nanotubes, NT11, University of Cambridge, UK, 2011.

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Guest Lectures

4. (Invited) "Monolithic carbon nanotube foams as current collectors for versatile energy storage applications", Faculty Development Program, Department of Chemistry, NIT Andhra Pradesh, India, 2020. 

3. “One-step synthesis of flexible electrode hosts for high energy density Li-S batteries”, Högskolan Dalarna (Dalarna University), Borlänge, Sweden, 2019.

2. “Additive Manufacturing of low modulus biomaterials”, Högskolan Dalarna (Dalarna University), Borlänge, Sweden, 2019.

1. "Tailor-made 3D Nano-structured Architectures for Energy and Biomedical Applications", School of Engineering Sciences and Technology, University of Hyderabad, India, 2018.

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Honors and Achievements

2014 Magna cum Laude (Great Distinction) for Doctoral studies, TU Dresden, Germany.
2007-2009 MHRD-GATE scholarship (Ministry of Human Resource, India).
2009 The Best Scanning Electron Micrograph award (First prize), in a micrography contest,
organised at IIT Kanpur by the Materials Advantage, India.
2008-2009 Deutscher Akademischer Austausch Dienst (DAAD) fellowship in Masters, Germany.
2007 All India 21st rank in Graduate Aptitude Test in Engineering (GATE).
2006 First prize, ‘Metallurgical Crossword’, Metallon ’06: National Technical Symposium, India.
2001 2 Silver medals of merit and distinction in secondary school.

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Extra-curricular activities

Music: Carnatic music (vocal), Harmonica.
Sports: Badminton, Basketball, Cricket, Kung Fu (Green belt), Biking, Jogging and Hiking.