Research Interest

1. Nanomaterials

Semiconductor nano structures are one of the highly interesting materials for future electronic, photonic and opto-electronic devices. Preparation and band gap tailoring gains interest due to the potentiality of these materials. Currently, we are preparing doped and un- doped ZnO, Co3O4, MgO nanoparticles and study their optical properties.

http://www.nitt.edu/home/academics/departments/physics/Faculty/lecturers/karthi/current/ZnOflower.gif

SEM and TEM images of micron sized flower like ZnO particles.


2. Raman Spectroscopy of Nanomaterials


3. Nonlinear Optics
Laser interaction with nanostructural materials is important for Photonics and Nanotechnology.  Size dependent and host dependent properties of nanosized metal and semiconductor clusters are very interesting.  Apart from this Intensity and frequency of exciting laser also plays a crucial in their nonlinear light transmitting property.

http://www.nitt.edu/home/academics/departments/physics/Faculty/lecturers/karthi/current/fig-3.gif
Optical limiting property of Dy doped ZnO nanoparticles

4. Fluorescence spectroscopy based Bio Sensors

We study the photoluminescence sensing of bio molecules using quantum dots. QDs of size 5–20 nm size will be synthesized by hydrothermal method. The prepared QDs exhibit very strong luminescence and these QDs are used to study the FRET and NSET based sensing applications.


5. Nano Bio-Synthesis
We synthesis nanoparticles using green synthesis and study its optical and sensing properties. We usually prepare Ag, Au nanoparticles using Biological way sometimes using High Power laser irradiations.

http://www.nitt.edu/home/academics/departments/physics/Faculty/lecturers/karthi/current/fig-5.gif

Antifungal studies of Ag nanoparticles.

6. Corrosion and corrosion prevention

We study hidden and accelerated corrosion detection in Aluminium (Al) alloys and steel alloys using ultrasonic and physical methods like XRD and RAMAN . These alloys are widely used marine and aircraft application where corrosion plays a major role in failure of metal. Our main aim is to find hidden and accelerated corrosion and way to idetify the prevention.

 

 

M.Tech Dessertations Guided

S.No

YEAR

NAME

THESIS TITLE

1.

2017

SOORAJ US

Effect of shot peening on corrosion behavior of tig welding aluminium 5052 plates

2.

2017

PRITHWIN C

Non destructive study of corrosion in friction stir welded A16061 plate using thermography and ultrasonic immersion testing

3.

2016

DUNGAVATH SRINIVAS NAIK

Non destructive evaluation of defects in adhesive bonds

4.

2016

MUHAMMED RAMEEZ VM

Infrared thermography and ultrasonic inspection of adhesive bonded structures

5.

2015

SRINIVAS NAIK

Non destructive evaluation of adhesive bonding using Acrylic sheet

6.

2015

PURUSHOTHAM

Case study of various NDT methods on friction stir welded Aluminium 5052 sheet

7.

2015

HANEESH T.K

Thickness monitoring of water wall panel tube by using HOMC guided wave technique

8.

2014

DILEEP K

Air coupled ultrasonic testing of composites

9.

2014

SACHIN RAJ P.V

Development of hybrid EMAT-PZT system for defect detection using ultrasonic time of flight diffraction (TOFD) technique

10.

2013

CHINTA GOPI

Improving the time resolution and signal to noise ratio of overlapped ultrasonic signals using wavelet transforms

11.

2013

RAHUL KUMAR

Characterization and correlation of defects of friction stir welds using phased array ultrasonic and TOFD techniques

12.

2011

BRAMHASIDDANANDA REDDY

Interaction between fundamental LAMB modes and defects in plate

13.

2010

S.SRI KRISHNA CHAITHANYA

Pulsed eddy current testing for finding wall thickness at high stand off for different geometries

14.

2010

K.RAVI TEJA

A study on single crystal materials using Linear and Non linear ultrasonic methods

15.

2010

GANAPATI RAO KUTIKUPPALA

Low cycle fatigue damage study in pureiron using magnetic and advanced ultrasonic technique

M.Sc Dessertations Guided

S.No

YEAR

NAME

PROJECT TITLE

1.

2017

GAYATHRI V

Kinetic study of silica nanoparticles 

2.

2016

CHRISTY PREETHA A

Fiber optic gas sensing and photocatalytic properties of ZnO:Cu nanoparticles

3.

2016

ANOOP SUNNY

Synthesis, optical and fiber optic gas sensing application of Hematite (α-Fe2O3) nanoparticles.

4.

2015

V.M.M.SAIPAVITRA

Effect of annealing and Cu doping on structural and optical properties of ZnO nanoparticles

5.

2015

SIVAKUMAR C

Biosynthesis and characterization of silver nanoparticles by musa acuminata

6.

2015

ARUNKUMAR S

Facile synthesis and optical properties of Cr2O3 : Bi2O3 nanostructures.

7.

2014

PAUL SELVI G

Green synthesis of Silver nanoparticles by Citrus limetta fruit extract and their antimicrobial activity.

8.

2014

G.ARAVINTH

Biosynthesis and characterization of Silver nanoparticles by Citrus sinensis fruit

9.

2014

HARIHARAN S

Spectroscopic probe on surfactant assisted defect control in α-Bi2O3

10.

2013

K.K.RAMESH BABU

Biosynthesis and characterization of Silver nanoparticles by Tribulus Lanuginosus leaves

11.

2012

ASHWIN KISHORE.M.R

Synthesis and spectroscopic studies of Samarium doped Bi2O3 microrods

12.

2011

DEEPTHI.K.R

CuO-PVA films for flexible storage application

13.

2010

K.MANGAIYARKARASI

Synthesis and spectroscopic studies on Calcium doped ZnO nanoparticles

14.

2010

M.HUSSAIN BEEVI

Synthesis of Copper oxide microparticles and its antimicrobial applications