Investigations on some amino acid based single crystals for nonlinear optical applications and

202 Pages·2012·9.82 MB·English

Investigations on some amino acid based single
crystals for nonlinear optical applications and amino
acid capped nanocrystals

Thesis Submitted to
Cochin University of Science and Technology
In partial fulfilment of the requirements for the
award of the degree of
DOCTOR OF PHILOSOPHY

By
Sreevalsa V.G

Department of Physics
Cochin University of Science and Technology
Cochin-682022

November 2012
Investigations on some amino acid based single crystals for nonlinear optical
applications and amino acid capped nanocrystals

Ph.D. thesis in the field of Material Science

Author:
Sreevalsa V.G
Division for Research in Advanced Materials
Department of Physics
Cochin University of Science and Technology
Cochin-682022
e-mail : [email protected]

Supervising Guide:
Dr. S. Jayalekshmi
Professor
Department of Physics
Cochin University of Science and Technology
Kochi: 682 022, Kerala, India
Email: [email protected]
[email protected]

November 2012
Dedicated to my beloved Parents and Teachers

DEPARTMENT OF PHYSICS
Cochin University of Science & Technology
Kochi – 682 022, Kerala, India
Phone: [phone] Extn. 34
Dr. S. JAYALEKSHMI Email: [email protected]
Professor [email protected]

Date: ……………

Certificate

Certified that the work presented in the thesis entitled “Investigations
on some amino acid based single crystals for nonlinear optical applications
and amino acid capped nanocrystals” is based on the original work done by
Mrs. Sreevalsa,V.G under my guidance and supervision at the Department of
Physics, Cochin University of Science and Technology, Cochin-22, India and
no part of it has been included in any other thesis submitted previously for
the award of any degree.

Dr. S. Jayalekshmi
(Supervising Guide)

DECLARATION

Certified that the work presented in the thesis entitled
“Investigations on some amino acid based single crystals for nonlinear optical
applications and amino acid capped nanocrystals” is based on the original
work done by me under the guidance of Prof. S.Jayalekshmi, Professor,
Department of Physics, Cochin University of Science and Technology,
Cochin–22, India no part of it has been included in any other thesis
submitted previously for the award of any degree.

Kochi– 22 Sreevalsa.V.G
2012

Acknowledgement
When mind is full, words are scarce, true, when expressing gratitude to all
those who have directly or indirectly involved in all walks of my research career.
I am highly indebted to my guide, Prof. S.Jayalekshmi; under whose
supervision the work reported here became fruitful and invaluable. I am grateful to
her for the support and excellent guidance throughout my research career. Her humble
nature, simplicity, sincerity, the way she treats students are worthy to be followed in
life. She is my friend, guide and philosopher in the true sense.
I am also thankful to the present Head of the department of Physics,
Prof.B.Pradeep and the former Head Prof. M.R.Anantharaman, for extending all the
necessary facilities. Thanks are also due to Prof.V.C.Kuriakose, the doctoral
committee member and my teacher, for all the blessings. I express my sincere thanks to
all the faculty members of the Department of Physics, for their support and
encouragement.
I extend my sincere thanks to the University Grants Commission, for
providing Teacher fellowship under the Faculty Improvement Programme.
I am extremely thankful to the Principal and staff of my college, K.K.T.M
Govt. College, Pullut, Kodungallur for the support and inspiration.
I take this opportunity to thank Prof. K.Babu Joseph, former Vice Chancellor
and Head of the Department of Physics, CUSAT who has paved my way to research.
I acknowledge my gratitude to Prof.V.P.N.Nampoori, Prof. V.M.Nandakumar and
Prof. P.Radhakrishnan, of International School of Photonics, CUSAT, for the
encouragement and support during my research tenure.
I thank Dr. Reji Philip and Miss. Lekshmi of Raman Research Institute,
Bangalore,Vishnu Kavungal and Mathew of ISP, CUSAT and Prof. P.K Das, IISc
Bangalore for the help extended in characterising the nonlinear optical properties.
I am also thankful to Dr. Deepthy Menon (formerly of ISP,CUSAT),
Dr. Reethamma, of ISP,CUSAT for all the help and support rendered.
Thanks are also due to the non teaching staff, Department of Physics, CUSAT
for the help and services rendered throughout the period of research.
Being with all the members of our DREAM lab- Jeeju, Sajimol Augustine,
SreekanthVarma, Aanand, Dr.Dhanya.T, Anilkumar,K.M, Francis Xavier and Rajiv
Tomy was a nice and enriching experience. I cherish the moments spent with my
teacher friends Jeeju and Sajimol Augustine, especially the lunch breaks, sharing dishes
and also ideas. Thanks to Sukesan (Jeeju’s husband) of CUSAT for the safe and joyful
drive to University and back home.
I am extremely thankful to my senior research scholars Dr.Arun.K.J,
Dr.Amritesh and Late Dr.Raveendranath who have stamped a rich research culture
in our lab.
I take this opportunity to thank Dr Sreeja, Dr Aneesh, Subha, Krishna
Prasad, Sanal, Hasna and Ganesh, former and present research students of the
Department of Physics for the sincere help extended, whenever necessary.
The services rendered by STIC, CUSAT, SAIF, IIT Madras, SCTIMST
Trivandrum and CIPET Bhuvaneswar are gratefully acknowledged.
No words are adequate to express my indebtedness to my family, especially my
husband and daughter who were always with me with invaluable support, care and
affection, without any complaints, even when their needs were overlooked in the tight
schedule. I am also grateful to my sister, brother in law and son in law for the