Grant2 : Research Grant for Scientist/Faculty (RGS/F) 2017-18

Dr Emmanuel Deepak D'Silva

Co-ordinator

Assistant Professor

M.Sc. (Physics)

Ph.D.

Teaching from 10 Years

With us from 10 Years

Dr Emmanuel Deepak D'Silva

Co-ordinator

Assistant Professor

M.Sc. (Physics)

Ph.D.

Experience

10 Years

Joined

2012

[email protected]

Mobile

8970093263

Academic Responsibilities

Criterion 3- Research, Consultancy, and Extensions : Convener

Research and Development Committee : Convener

Grievance Redressal Cell : Member

Annual Magazine Editorial Committee : Member

NEP Task Force : Member

Examination Committee : Convener

Research Expert Committee : Convener

Annual College Magazine Committee : Convener

Konkanni Sangh : Convener

View Detailed Profile...

Courses Taught :M.Sc. (Electronics)

Area of Expertise :Electronics, Non-linear Optics

Awards and Achievements:1. Awarded the Department of Science and Technology (DST) Research Fellowship
(2007-2010).
2. Journal of Optics and Laser Technology, Most downloaded Paper Award 2012 for the manuscript: Structural, optical and electrical characteristics of a new NLO crystal. Journal of Optics and Laser Technology (2012), 44, 1687-1697; E.D. D’silva*, G.K. Podagatlapalli, S.V. Rao, S.M. Dharmaprakash.
(*corresponding author).

Research Details:
Publications:

1. Amit Kumar, Vipin Deval, Poonam Tandon, Archana Gupta, E. Deepak D’silva. Experimental and theoretical (FT-IR, FT-Raman, UV-vis, NMR) spectroscopic analysis and first order hyperpolarizability studies of non-linear optical material: (2E)-3-[4-(methylsulfanyl)phenyl]-1-(4-nitrophenyl)prop-2-en-1-one using density functional theory. SpectrochimicaActa Part A: Molecular and Biomolecular Spectroscopy (2014), 130, 41-53.

2. E.D. D’silva, S.M. Dharmaprakash. Electrical and optical characteristic of non-linear optical chalcone derivative. Elixir Crystal Growth (2013), 65, 19724-19730. (Corresponding author)

3. E.D. D’silva, G.K. Podagatlapalli, S.V. Rao, S.M. Dharmaprakash. Study on third order nonlinear optical properties of 4-methylsulfanyl chalcone derivatives using picosecond pulses. Materials Research Bulletin (2012), 47, 3552-3557. (Corresponding author)

4. E.D. D’silva, G.K. Podagatlapalli, S.V. Rao, S.M. Dharmaprakash. Structural, opticaland electrical characteristics of a new NLO crystal. Journal of Optics and LasTechnology (2012), 44, 1687-1697. (Corresponding author)

5. E.D. D’silva, G.K. Podagatlapalli, S.V. Rao, D.N. Rao and S.M. Dharmaprakash. New, high efficiency nonlinear optical chalcone co-crystal and structure-propertyrelationship. Journal of Crystal Growth and Design (2011), 11, 5362-5369. (Correspondingauthor)

6. E.D. D’silva, D.N. Rao, R. Philip., R.J. Butcher, Rajnikant, S.M. Dharmaprakash.Second harmonic chalcone crystal: Synthesis, growth and characterization. Physica B:Condensed Matter (2011), 406, 2206–2210. (Corresponding author)

7. E.D. D’silva, D.N. Rao, R. Philip, R.J. Butcher, Rajnikant, S.M. Dharmaprakash.Synthesis, growth and characterization of novel second harmonic nonlinear chalconecrystal. Journal of Physics and Chemistry of Solids (2011), 72, 824–830.(Correspondingauthor)

8. H.K. Fun, R. Kia, E.D. D’silva, P.S. Patil, S.M. Dharmaprakash. 3-hydroxy 4-methoxy benzaldehydethiosemicarbazone hemihydrates. Actacrystallographica Section E (2008), E64, o2274.

9. H.K. Fun, S. Chantrapromma, E.D. D’silva, P.S. Patil, S.M. Dharmaprakash. 2,5-dimethoxybenzaldehydethiosemicarbazone. Actacrystallographica Section E (2008), E64, o935.

10. H.K. Fun, S. Chantrapromma, E.D. D’silva, P.S. Patil, S.M. Dharmaprakash. S-benzylthiouronium4- anilinobenzenesulfonate. Actacrystallographica Section E (2008),E64, 1858.

11. H.K. Fun, S. Chantrapromma, P.S. Patil, E.D. D’silva, S.M. Dharmaprakash. (E)-3-(4- methyl phenyl)-1-(4-nitro phenyl) prop-2-en-one. Actacrystallographica Section E(2008),E64, o954-o955.

12. H.K. Fun, S.R. Jebas, I.A. Razak, P.S. Patil, S.M. Dharmaprakash, E.D. D’silva. (E)-3-(2-Chloro phenyl)-1-(4-chlorophenyl)prop-2-en-one. Actacrystallographica Section E(2008),E64, o954-o1177.

13. H.K. Fun, S.R. Jebas, I.A. Razak, E.D. D’silva, P.S. Patil, S.M. Dharmaprakash. S-benzylthiouronium3-nitrobenzene sulfonate. Actacrystallographica Section E (2008),E64, o1195-o1196.

14. H.K. Fun, S.R. Jebas, P.S. Patil, E.D. D’silva, S.M. Dharmaprakash. (E)-1-(4-fluorophenyl)-3-(4-methyl phenyl)prop-2-en-one. Actacrystallographica Section E (2008),E64, o935.

Paper Presentations:1. E.D. D’silva, S. Raghavendra and S.M. Dharmaprakash. New chalcone crystal 4Br4MSP for nonlinear optical investigations. National Conference on Smart Materials and Technologies for Emerging Electronics. BadagaMijar, Moodabidri, Karnataka, India,March 8 and 9, 2013.
2. E.D. D’silvaand S.M. Dharmaprakash. Efficient noncentrosymmetric novel crystal 4-SCH3-4’-nitrorochalcone. Modern Trends in Science and Technology, MTST-11, Dr. M.V.Shetty Institute of Technology, Moodbidri, Mangalore, October 14 and 15, 2011.
3. E.D. D’silvaand S.M. Dharmaprakash. Synthesis, Growth and Characterization OfOrganic NLO Crystals Of 4-SCH3-4’-Chlorochalcone. Solid State Physics, Proceedings ofthe 55th DAE Solid State Physics Symposium 2010, AIP Conf. Proc. (2011) 1349, 1241-1242, Manipal University, Manipal, December 26-30, 2010.
4. E.D. D’silva, P.S. Patil, S.M. Dharmaprakash. Synthesis and crystal structure of second ordered non-linear optical material: S-benzylthiouronium 3-nitro benzene sulfonate.38th National Seminar on Crystallography, Mysore University, February 11-13, 2009.
5. E.D. D’silva, R. Philip, R.J. Butcher and S.M. Dharmaprakash. Non-linear absorption studies of newly synthesized chalcone derivatives. 14th National Seminar on Crystal Growth, NSCG-XIV, VIT University, Vellore, March 10-12, 2010.

Membership on Societies/Academic/Professional Bodies:1.Ad-hoc Reviewer for manuscripts to be considered for publication in Journal of MolecularStructure, Journal of Materials Science and Journal of Optics and Laser Technology.

Other Details:1.Convener of one-day National Level Workshop on, “Digital Communication and PCB Fabrication”, 1st April 2014, sponsored by KSCST.
2.Co-convener of UGC sponsored two days National Seminar on “Radiation and Environment”, 5th and 6th February, 2015
3.Convener of one day National level Seminar on “Theoretical Aspects of Particle and High energy Physics”, 4th April 2015

Funding Agency: Vision Group on Science and Technology (VGST), Department of IT, BT and Science and Technology, Govt. of Karnataka

Ref No.: No. KSTePS/VGST-RGS/F/GRD No.588/2017-18

Sanctioned Amount: Rs. 5,00,000

Project Title: Synthesis of novel organic crystals for nonlinear optical studies

Principal Investigator: Dr E Deepak D’silva

Coordinator and Assistant Professor

PG Department of Physics

Project Summary:

Over last two decades there is an enduring interest to make use of organic molecular systems in the (NLO) devices. Organic nonlinear optical (NLO) materials have been extensively studied because of their potential application in integrated optical signal processing, and optical switching, etc. Poled polymeric materials are promising materials for second-order NLO materials. They have large susceptibilities, fast response times, excellent mechanical and physical properties, and good to be process ability.

It is well known that, for a practical second harmonic generation nonlinear optical (SHG/NLO) material, one of its important properties is its stable non-centrosymmetric arrangement of chromophores. As the regular orientation of the polar chromophores would be damaged by the molecular thermal movement, the SHG activity decays fast. To obtained materials having persistency in the intrinsic second order nonlinearity over an extended period of time under desired conditions, is a challenging requirement. Presently, there is an intensive search for novel nonlinear optical (NLO) materials that may be used to design and prepare improved waveguide devices for nonlinear optical applications. Organic materials offer a number of advantages over inorganic crystals because of their high and ultra fast nonlinear response and a low dielectric constant, as well as the enormous design flexibility allowed by molecular engineering.

The main goal of the present study is to obtain a good medium for all-optical applications, by enhancing 3-rd order nonlinear Kerr effect. New organic materials they exhibit a promising performance in NLO applications and acceptable properties for technological preparation of channel waveguides.

Objectives of the Project:

Crystalize the materials to obtain respective seed crystals
Crystals are then subjected to powder and single crystal XRD techniques to study and confirm their crystal structure
To study the thermal stability of the crystal (DSC/ TG/DTA)
Establishing firm structure property relationship.

St Philomena College, Puttur

St Philomena College, Puttur

Research Grant for Scientist/Faculty (RGS/F) 2017-18

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St Philomena College, Puttur

Research Grant for Scientist/Faculty (RGS/F) 2017-18