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Department of Physics

University of Kerala

Established in 1970

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Department of Physics
University of Kerala
Kariavattom Campus
Thiruvananthapuram


Faculty >> Profile

Dr.Sibi K S-image
Dr. Subodh G.
Assistant Professor

Phone (Off) : +91-471-2308920
Mobile         :+91-9633983404


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KSCSTE Young Scientist Award, Kerala state council for Science Engineering and Environment 2017, "World Scientist and University Rankings 2021“



Subodh received Ph. D in Physics from University of Kerala, for the research work carried out at CSIR-NIIST, Thiruvananthapuram. After the completion of Ph. D (Jan 2009), he worked as a postdoctoral fellow (from Feb. 2009 to Aug. 2009) and later as an Alexander von Humboldt fellow (Sep. 2009 to Oct. 2010) at Stuttgart University, Germany and as a CEFIPRA postdoctoral fellow (from Nov. 2010 to Aug. 2011) in the Inorganic Materials Laboratory of the University of Rennes, France. Later on, he worked as a JSPS postdoctoral fellow (from Sep. 2011 to Sep. 2013) at the Department of Energy and Hydrocarbon Chemistry of the University of Kyoto, Japan. After completing nearly 4 and half years of postdoctoral research from abroad, he worked as a CSIR SRA under the scientist’s pool scheme at CSIR-NIIST Thiruvananthapuram from Oct. 2013 to Feb. 2014. Presently he is an Assistant Professor at the department of Physics of University of Kerala.

His research work on functional materials came out as 50 publications in international journals. He also published 2 book chapters. Further, he presented his research work in many national and international conferences. He is also a reviewer for many international journals.

Ph. D in Physics, NIIST, Trivandrum, India, 2009.
Title of thesis: Investigations on High Permittivity Sr2+nCe2Ti5+nO15+3n (n≤10)
Based Ceramics and Their Polymer Composites For Microwave Applications
M. Phil Photonics Dept. of Optoelectronics, University of Kerala (2004)
M. Sc Physics Dept. of Physics, University of Kerala (2002)

Kerala State Young Scientist Award 2016
CSIR-SRA (under Scientist’s pool scheme)
JSPS Fellowship 2011
Alexander von Humboldt Fellowship 2009
Selected for Nobel Laureate’s meeting in physics 2008 held at Lindau, Germany.
GATE- 2004 [97.4 percentile]
Junior & Senior Research Fellowships (CSIR)

Feb. 2014 - till date Assistant Professor, Department of Physics, University of Kerala.

Electromagnetic interference shielding materials, Microwave ceramics, Polymer-ceramic composites, Cold sintering process, Microwave antennas.
Inorganic phosphors, Optical thermometry, Light emitting diodes, Optical properties of low dimensional materials

Publications in SCI Journals

Amrithakrishnan B, Jawahar I N, Subodh G* Distortion and Energy Transfer Assisted Tunability in Garnet Phosphors Critical Rev. Solid State Mater. Sci. (Accepted 2021, IF-8).

Nima A. M., Vidhya L, Subodh G* “Green Route for the Synthesis of Fluorescent Carbon Nanoparticles from Circassian Seeds for Fe(III) Ion Detection” J. Fluorescence. (Accepted 2021).

. Rakhi M, Santha N, Subodh G* “Insights into the Microstructure and Dielectric Properties of Cold Sintered NaCa2Mg2V3O12 Based Composites” Frontiers in Materials 665033 (2021) (IF-2.7)

Athira R, Sibi K. S. Subodh G* “Cold Sintering: An Energy-Efficient Process for the Development of SrFe12O19–Li2MoO4 Composite-Based Wide-Bandwidth Ferrite Resonator Antenna for Ku-Band Applications” ACS Appl. Electr. Mater. (2021) Accepted.

Sariga C. Lal, Jawahar I. N, Subodh G* “Deep-Red Emitting SrLaLiTeO6: Mn4+ Double Perovskites: Correlation Between Mn4+-O2- Bonding and Photoluminescence” J. Am. Ceram. Soc (Accepted) (IF=3.5).

Sibi N, Subodh G* “Magnetodielectric response of composites based on a natural garnet and spinel ferrites for sub-GHz wireless applications” Ceram. Inter. (Accepted) (IF=3.83).

Nithin J. S, Mahesh A, Sibi K. S, Subodh G* “Insights into the crystal structure and multifunctional optical properties of A2CdTeO6 (A= Ba, Sr, Ca) double perovskites” J. Alloys. Compds. 865 158902 (2021) (IF=4.65).

Anooja J B, Vidhya L, Subodh G* “Synergy-induced tunable electromagnetic response and enhanced shielding efficiency in carbon black-and carbonyl iron-reinforced polydimethylsiloxane composites” Mater. Res. Bull. 142 111415 (2021) (IF=4).

Sariga C. Lal, Jawahar I. N, Subodh G* Distortion induced structural characteristics of Ba2R2/3TeO6 (R = Y, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu) double perovskites and their multifunctional optical properties for lighting and ratiometric temperature sensing Mater. Adv. 2 1328 (2021).

Vilesh V. L. Subodh G* “Crystal structure and phonon modes of disorder induced Ba2Li1-xTe1+ xO5. 5+ δ (x= 0, 0.1, 0.2) double perovskite based microwave dielectrics” Mater. Res. Bull. 137 111190 (2021) (IF=4).

Nima A M, Amritha P, Vidhya L. Subodh G* “Green synthesis of blue-fluorescent carbon nanospheres from the pith of tapioca (Manihot esculenta) stem for Fe (III) detection” J. Mater. Sci. Mater. Electr. 23 21767 (2020) (IF=2,2).

Athira Rajan, Subodh G* “Crystal structure, microstructure, and broadband electromagnetic response of Al3+-substituted Sr3YCo4O10+δ double perovskites” Ceram. Inter. 46 25683 (2020). (IF=3.83).

Adersh V, Subodh G* Influence of B2O3 on the Broadband Electromagnetic Response of MgFe1.98O4 Ceramics J. Electr. Mater. 49 7316 (2020). (IF=1.77).

Santha N. Rakhi M. Subodh G* “Fabrication of high quality factor cold sintered MgTiO3–NaCl microwave ceramic composites” Mater. Chem. Phys. 255 123636 2020 (IF=3.4).

Sibi N. Athira Rajan, Subodh G* Garnet Mineral Based Composites through Cold Sintering Process: Microstructure and Dielectric Properties” J. Eur. Ceram. Soc. 40 371-375 (2020) (I.F=4.45).

Rakhi M. Subodh G* “Crystal structure, phonon modes, and bond characteristics of AgPb2B2V3O12 (B = Mg, Zn) microwave ceramics” J. Am. Ceram. Soc. 103, 3157 (2020) (IF=3.5).

Vidhya Lalan, Subodh G* “Broadband Electromagnetic Response and Enhanced Microwave Absorption in Carbon Black and Magnetic Fe3O4 Nanoparticles Reinforced Polyvinylidenefluoride Composites” J. Electr. Mater. 49, 1666 (2020) (IF-1.77).

Sariga C. Lal, A.M. Aiswarya, K.S. Sibi, G. Subodh*, “Insights into the structure, photoluminescence and Judd-Ofelt analysis of red emitting SrLaLiTeO6: Eu3+ phosphors” J. Alloys Compds 788 1300 (2019) (IF- 4.65).

Varsha Viswanath, Sreeja Sreedharan Nair, G. Subodh*, C. I. Muneera* “Zinc oxide encapsulated poly (vinyl alcohol) nanocomposite films as an efficient third-order nonlinear optical material: Structure, microstructure, emission and intense low threshold optical limiting properties” Mater. Res. Bull. 2, 281–291 (2019). (IF-4)

Athira Rajan, Sikha L. Das, Sibi K. S, Subodh G* “Influence of Bi Substitution on the Microstructure and Dielectric Properties of Gd3Fe5O12 Ceramics” J. Electr. Mater. 48, 1133, (2019) (IF=1.77).

Vidhya Lalan, Aparna P. N., K. P. Surendran, Subodh G “Room-Temperature Ferromagnetic Sr3YCo4O10+δ and Carbon Black-Reinforced Polyvinylidenefluoride Composites toward High-Performance Electromagnetic Interference Shielding” ACS Omega 4, 8196−8206 (2019). (IF= 2.87)

Anooja J. Babu, Dijith K. S, Surendran K. P., Subodh G*, A simple strategy for flexible electromagnetic interference shielding: Hybrid rGO@CB-Reinforced polydimethylsiloxane, J. Alloys and Compds. 807, 151678, (2019). (IF 4.65).

Vilesh V. L, Rukzana K, Subodh G*, “Vibrational studies and microwave dielectric properties of Ca3Te2Zn3O12ceramic with garnet structure” J. Mater. Mater. Electr. 30, 18936 (2019) (IF=2.2).

Rakhi M. Subodh G* “Crystal structure and microwave dielectric properties of NaPb2B2V3O12 (B=Mg, Zn) ceramics” J. Eur. Cer. Soc. 38 4962 (2018) (IF=4.45)

Sibi N, Induja I. J., K. P. Surendran, Subodh G*, “Natural garnet reinforced high density polyethylene composites for sustainable microwave substrates” Mater. Res. Bull. 106 478 (2018) (IF=4).

Sariga C. Lal, Vidhya Lalan, Subodh G*. Structural Characterization of B‑Site Ordered Ba2Ln2/3TeO6 (Ln = La,Pr, Nd, Sm, and Eu) Double Perovskites and Probing its Luminescence as Eu3+ Phosphor Hosts, Inorg. Chem. 57 6226-6336 (2018) (IF= 4.82).

Vilesh V. L., Subodh G* “Crystal Structure, Phonon Modes and Dielectric Properties of B Site Ordered ABiLiTeO6(A= Ba, Sr) Double Perovskites Cer. Inter. 44 12036–12041 (2018) (IF= 3.83).

Sariga C. Lal, Athira Rajan, Subodh G* “Crystal Structure and Luminescence Properties ofrare Earth Doped Ba2Bi2/3TeO6 Double Perovskites”, Materials Today Proceedings 4, 4396 4402 (2017).

Vilesh V. L., Subodh G*, “Crystal Structure and Dielectric Properties of BaANaTeO6 (A = Bi,La) Double Perovskites” Ceram. Inter. 43 (15), 12718- 12723 (2017) (IF= 3.83).

N. Sibi, G. Subodh*, “Structural and Microstructural Correlations of Physical Properties of Natural Almandine-Pyrope Solid Solution: Al70Py29” J. Elect. Mater. 46 (12), 6947 (2017)(IF= 1.77).

Amrithakrishnan B., Subodh G*, “Crystal Structure and optical properties of B site Ordered ALaLiTeO6 (A = Ba, Sr) ceramics” Mater. Res. Bull. 93,177–182 (2017). (IF=4).

M. Rakhi & Subodh G* “Rare Earth Titano-silicates for High k Gate Dielectric Applications” Ceram. Inter. 42, 10886(2016). (IF= 3.83). As JSPS Postdoctoral Fellow at Kyoto University Japan (2011-2013)

Subodh G, T. Yajima, K. Nakano, Y. Nozaki, C. Tassel, Y. Kobayashi, H. Kageyama*, Superconductivity in LaPd2As2 with a Collapsed 122 Structure, J. Alloys. Compd. 613 370 (2014). (IF= 4.65).

Subodh G*, C. Tassel, N. Hayashi, G. Bouilly, Y. Goto,T. Yajima, Y. Kobayashi, and, H. Kageyama, ChargeDisproportionation and Magneto-resistivity in a Double Perovskite with Alternate Fe4+ (d4) and Mn4+(d3) Layers, Eur.J. Inor. Chem. 2576-2581 (2014) (IF= 2.50).

G. Subodh T. Yajima, K. Nakano, Y. Nozaki, C. Tassel, Y. Kobayashi, and H. Kageyama*, LaPd2Sb2, a pnictide superconductor with CaBe2Ge2 type structure J. Alloys. Compd. 583 151–154 (2014) (IF= 4.65).

C. Tassel, L. Seinberg, N. Hayashi, Subodh G, Y. Ajiro, Y. Kobayashi, H. Kgeyama* Sr2FeO3 with Stacked Infinite Chains of FeO4 Square Planes Inor. Chem. 52 6096 (2013) (IF= 4.82). As Alexander von Humboldt Fellow at University of Stuttgart, Germany (2009-10)

R. Ubic*, Steven Letourneau, S. Thomas, G. Subodh and M. T. Sebastian,“Influence of Sr substitution on the structure microstructure and microwave dielectric properties of Ca1-x SrxMgTeO6 ceramics”, Chem. Mater. 22 4572-4578 (2010). (IF= 9.57).

R. Ubic*, G. Subodh, Prediction of Lattice constants in orthorhombic perovskites, J. All. Comp. 488 374-79,(2009). (IF= 4.65).

G. Subodh, V. Deepu, P. Mohanan M. T. Sebastian*, Dielectric Response of High permittiviity Polymer ceramic Composite with Low Loss tangent, Appl. Phys. Lett. 9 062903 (2009) (IF= 3.49). Selected Publications as Ph. D student at CSIR-NIIST, Trivandrum

A. Dias*, G. Subodh, M. T. Sebastian, and R. L. Moreira, Vibrational spectroscopi study of Sr2ZnTeO6 double perovskites, J. Raman. Spectr. 41,70206, (2010) (IF= 2.87).

R. Ubic, * G. Subodh, M. T. Sebastian, D. Gout, and T. Proffen, “Crystal Structure of Sr0.4Ce0.4TiO3 Ceramics”, Chem. Mater. 21,4706-10,(2009) (IF=9.57).

S. Kamba*, M. Savinov, O. Tkáč, Ch. Kadlec, S. Veljko, E. John, G. Subodh, M. T. Sebastian, F. Laufek, V. Bovtun, J. Pokorny, J. Petzelt, Quantum Paraelectric and Ferroelectric Properties in novel Sr9-xPbxCe2Ti12O36 (x=0-9)ceramic system, Chem. Mater. 21, 811, (2009) (IF= 9.57).

G. Subodh,V. Deepu P. Mohanan, M. T. Sebastian*, Dielectric response of Sr2Ce2Ti5O15 ceramic loaded polyethylene, J. Phys. D. Appl. Phys. 42, 225501 (2009) (IF= 2.37).

R. Ubic*, G. Subodh, M.T. Sebastian, D. Gout, and T. Proffen, Effective Size of Vacancies in the Sr1-3x/2CexTiO3 Superstructure, Ceramic Transactions, 204 177-86, (2009).

J. Honkamo, H. Jantunen*, G. Subodh, M. T. Sebastian, P. Mohanan, Tape Casting and Dielectric Properties of Zn2Te3O8-based Ceramics with Ultra-Low Sintering Temperature, Int. J. of Appl. Ceram.Tech. 6, 531-36 (2009).

G. Subodh, V. Dipu, P. Mohanan and M. T. Sebastian*, Polystyrene/Sr2Ce2Ti5O15 composites ForMicrowave Substrate Applications, Polym. Engg. Sci. 49, 1218-24, (2009).

R. L. Moreira*, R. P. S. M. Lobo, G. Subodh, M. V. Jacob, M. T. Sebastian, and A. Dias, Microwave and infrared dielectric properties of Sr1-x/2CexTiO3 (x=0.154 to 0.400) incipient ferroelectrics at cryogenic temperatures, J.Phys. D. Appl. Phys. 42, 75411-19 (2009) (IF=2.37).

R. Rejini, G. Subodh and M. T. Sebastian*, Ca4La2Ti5O17: A novel low loss dielectric ceramics in the CaO-La2O3 -TiO2 system, J. Mater. Sci. Mater. Electr. 19, 1153-55 (2008). (IF=2.2).

A. Dias, G. Subodh, M. T. Sebastian, M. M. Lage and R. L. Moreira*, Vibrational studies and microwave dielectric properties of A-site substituted tellurium-based double perovskites, Chem. Mater. 20, 4347(2008) (IF= 9.57).

R. Ubic*, G. Subodh, M.T. Sebastian, D. Gout, and T. Proffen, Structure of compounds in the Sr1-3x/2CexTiO3 Homologous Series, Chem. Mater. 20, 3127-33 (2008) (IF= 9.57).

G. Subodh and M. T. Sebastian*, Microwave Dielectric Properties of ATe3O8 (A=Sn, Zr) Ceramics, Jpn. J. Appl. Phys. 47, 7943-46 (2008).

G. Subodh, M. V. Manjusha, J. Philip and M. T. Sebastian*, Thermal Properties of PTFE/Sr2Ce2Ti5O16 Polymer Ceramic composites, J. Appl. Polm. Sci. 108, 1716 (2008).

G. Subodh and M. T. Sebastian* “Microwave dielectric properties of Sr2Ce2Ti5O16 ceramics” Mater. Sci. Engg. B 136, 50-56 (2007). (IF= 4.7).

G. Subodh, J. James, M. T. Sebastian, R. M. Paniago, A. Dias and R. L. Moreira*, Structure and Microwave Dielectric Properties of Sr2+nCe2Ti5+nO15+3n (n≤10) Homologous Series” Chem. Mater. 19, 4077- 82 (2007) (IF= 9.57).

R. L. Moreira*, R. P. S. M. Lobo, G. Subodh, M. T. Sebastian, F. M. Matinaga, and A. Dias, Optical Phonon Modes and Dielectric Behavior of Sr1-3x/2CexTiO3 Microwave Ceramics Chem. Mater. 19, 6548-54 (2007) (IF= 9.57).

G. Subodh, C. Pavithran, P. Mohanan, M. T. Sebastian*, PTFE/Sr2Ce2Ti5O16 Polymer Ceramic Composites for Electronic Packaging Applications J. Euro. Ceram. Soc.27, 3039 (2007) (IF=4.45).

G. Subodh and M. T. Sebastian*, Glass free Zn2Te3O8 microwave ceramic for LTCC Applications J. Am. Ceram. Soc. 90, 2266-68 (2007) (IF=3.5).

G. Subodh, Manoj Joseph, P. Mohanan and M. T. Sebastian*, Low Dielectric Loss Polytetrafluoroethylene/TeO2 Polymer Ceramic Composites” J. Am. Ceram. Soc. 90, 3507-3511 (2007). (IF=3.5).

G. Subodh, C. Tassel, Y. Kobayashi and H. Kageyama Synthesis of novel oxyfluoride through fluorination of BaSnO3 International conference on Materials Science and technology (ICMST 2012), St. Thomas College Kottyam, Kerala.10-14 June 2012.

G. Subodh, M. V. Jacob,M. T. Sebastian, R. L. Moreira, R. P. S.M. Lobo, A. Dias (2009): Microwave dielectric Properties of novel incipient ferroelectrics in the Sr1-3x/2CexTiO3 system. Microwave for Condensed Matter Physics Bad Honnef, Germany.

G. Subodh, V. Deepu, P. Mohanan, and M. T. Sebastian (2007): Polystyrene-Sr2Ce2Ti5O16 Composites for Microwave Substrate Applications, Proceedings of IUMRS-ICAM, 10th International conference on advanced materials at Bangalore, India, October 2007 O 14.G.

Subodh and M. T. Sebastian (2007): A novel Zn2Te3O8 microwave ceramics for LTCC applications, National Conference on Smart Electro Ceramics at Thrissure, India on March 2007.

M. V. Jacob, G. Subodh, M. T. Sebastian, J. Krupka and J. Mazierska, (2007): Microwave Characterisation of MgTe2O5 using quasi TE0np Mode Dielectric Resonator technique” Asia Pacific Microwave Conference (APMC) 2007 Dec. 11-14 2007, Bangkok.

G. Subodh, and M. T. Sebastian, (2008): The Influence of Pb substitution for Sr on the crystal structure, microstructure and dielectric properties of Sr2Ce2Ti5O15 ceramics 5th International conference on Microwave Materials and Application at Hangzhou, China November 2008 164.

G. Subodh, S. Thomas, M. T. Sebastain, (2008): Tellurium based ceramics for Millimeter Wave Applications” 5th International conference on Microwave Materials and Application at Hangzhou, China November 2008, 28.

P. S. Anjana, S. George, S.Thomas, G. Subodh, M. T. Sebastian and P. Mohanan, (2007): Effect of filler on the microwave dielectric properties of PTFE/ceramic Composites. International Conference on Advanced Materials and Composites at Trivandrum, India, October, 2007 76.

G. Subodh, M. T. Sebastian, C. Pavithran and P. Mohanan (2006): PTFE/Sr2Ce2Ti5O16 polymer ceramic composites for electronic packaging applications, International conference on Microwave Materials and Applications June 2006 held at Oulu Finland.

G. Subodh and M. T. Sebastian, (2004): Preparation Characterization and Properties of SrO-CeO2-5TiO2 Ceramics, National Conference on Ferroelectric and Dielectrics (NSFD-13) at Delhi, India November 2004, 96.

Book Chapter 1. M .T. Sebastian, S. Ananthakumar, G. Subodh, J. Juuti and H. Jantunen Composite Electro-ceramics, Encyclopaedia of Composites (Published in 2012)
2. Rick Ubic, G. Subodh, M. T. Sebastian “High k materials” Materials for Microwave Applications” Wiley 2017.

On going

1.“Development of polymer nanocomposite based microwave absorbers for L & S band frequencies” Kerala State council for Science Technology and Environment (KSCSTE) Kerala State Young Scientist Award Research Scheme 2020-23, Outlay- 41.32 Lakhs (PI).

2.“Functional Magneto-dielectric Materials for Microwave Applications” KSCSTE SRS Scheme 2018- 21 Outlay 22.32 lakhs (PI).

3. “Development of cold sintered dielectrics for electronic applications” DST Woman Scientist Scheme 2019-22 Out lay 29 lakhs (Mentor).

Completed

4. “Glass free magnetodielectric materials for LTCC applications” SERB 2016-19 Outlay 31.19 Lakhs (PI).

5. Rare earth-based oxides as High k materials for gate dielectric applications UGC-2015-17 Outlay 6 lakhs (PI).

6. “Establishing Functional Materials Laboratory” KSCSTE -SARD 2017-20 Outlay-31.5 Lakhs (Coordinator)

7. “Novel Double Perovskites” International Centre for Diffraction Data (ICDD) 2016 Outlay- 1000 USD (PI).

Uploaded on : 2021-06-04

2015 : Refresher Course in Nanoscience (25-11-2015 to 15-12-2015)

2018 : Orientation program (28-02-2018 to 27-03-2018)

2019 : Short term course on Disaster Management (23-07-2019 to 29-03-2019)

2020 : Refresher Course (15-10-2020 to 28-10-2020)

2020 : Short term Course (20-08-2020 to 26-08-2020)

2020 : Refresher Course (05-08-2020 to 18-08-2020)