advancement in physics and electronics

1. Advancement in physics and
electronics
Antilen Jacob G,
Senior Research Fellow,
Magnetic Materials Laboratory,
Department of physics,
NIT-Trichy.

2. Critical thinking and questioning
1. You should think out of your box
2. Some equations are only valid in certain
domain
3. Don’t constrain your thinking in fixed space
4. Always ask the question why?

3. Major types of Research
Application
Orientated
Research.
• Civil ,Mechanical, Electrical, other engineering
• Energy, Environment and Sustainability
Fundamental
research
• Inventing something novel from the existing fundamental
• Most Noble Prize oriented research
Bio-
mimicking
• biologically inspired research(Ecological)
• Inter-Disciplinary or Multi-disciplinary?????

4. Wind turbines (humpback whale)
Cephalopod camouflage (Chameleon)
Bullet train front head
Kingfisher
Black box Woodpecker
head bone
Desert
Beetle
shell like
structure
employed
for water
harvest
Termite
habitat
Passive
and
active
cooling

5. The gecko tape phenomena
gecko has many microscopic hairs, or setae (singular seta), that
increase the Van der Waals forces
These setae are fibrous structural proteins that protrude from
the epidermis, which is made of β-keratin

6. strength of spider silk.
The tensile strength of spider silk ranges from 1.3 G Pa.
The tensile strength steel is 1.65 G Pa.

7. Morphological adaption of bee clusters
• Honeybee Apis mellifera swarms
• Influence of dynamic mechanical forcing is unknown
• Measuring the response of a cluster to an impulsive
pendula excitation shows that flattened cones deform
less and relax faster than the elongated ones

8. Encyclopedia of knowledge (Observation)
Virupaksha Temple
The Vijaya Vittala
The Wheel of the Konark Sun Temple Chariot

9. Capturing 21 cm Hydrogen line
• This line is created by a change in the energy state of neutral hydrogen atoms which
has precise frequency of 1,420,405,751.7667±0.0009 Hz
• This line can penetrate the large clouds of interstellar cosmic dust that are
opaque to visible light
• Atomic transition of an electron between the two hyperfine levels of the
hydrogen 1 s ground state
• This transition is highly forbidden with an extremely small transition rate
of 2.9×10−15 s−1, and a mean lifetime of around 10 million years
• extremely small natural width
• The Pioneer plaque and golden disc (ETI)

10. Our design (VISION-2019)
Filter and LNA
10 mm Al sheet for waveguide
Copper probe VNA
Spectrum Analyzer Finalized Design

11. IR telescope for look through dust.
James Webb Space Telescope (JWST or "Webb")
The JWST will provide improved infrared resolution and
sensitivity over Hubble, and will enable a broad range of
investigations across the fields of astronomy and cosmology
Eighteen 1.32-meter (4.3 ft; 52 in) hexagonal mirror
segments made of gold-plated beryllium which combine to
create a 6.5-meter
The telescope must be kept very cold in order to observe in
the infrared without interference
deployed in space near the Earth–Sun L2 Lagrangian point,
and a large sunshield made of silicon- and aluminum-coated
Kapton will keep its mirror and instruments below 50 K

12. Nanotechnology
• Coarse particle –smaller than 10 micron
• Fine particle- smaller than 2.5 micron
• Ultrafine particle- smaller than 0.1 micron
• Nanoparticle dimensions between 1-100
nm

13. Nanotechnology
The glass appears green when illuminated from the outside (a)
and purple-red when illuminated from the inside (b).
Nanomaterials have been in use since ancient times, since the
4th century AD
It was found that the dichroism (two colors) is observed due to
the presence of nanoparticles, silver 66.2%, 31.2% gold, and
2.6% copper, up to 100 nm in size, dispersed in a glass matrix
Red due to absorption of light (∼520 nm) by the gold
particles, the green color by scattering with colloidal
dispersions of silver particles with size >40 nm

14. Hyperthermia new generation cancer therapy .
• Tissue is exposed to high temperatures (up to 113°F), such temperatures
can damage and kill cancer cells
• Heating is due to Brownian and Neel relaxation of nanoparticles
• Hof should be less than 5 × 109Am−1 s−1
J. Shebha Anandhi, G. Antilen Jacob, and R. Justin
Joseyphus, Mater. Res. Express 6, (2019).

15. Targeted Drug delivery and Detoxification
• 137Cs with a half-life of 30.1671
years.
• Surface modified magnetite
nanoparticles with Prussian blue
• It can be magnetically separated

16. Removable Catalysis in CTH reaction

17. TEM micrographs
Figure shows a) Fe90Co10 b) Fe50Co50

18. Facilities in our Lab
TEM (Technai Version) VSM (Lakshore) TGA/DTA
Contact me : antilenjacob@gmail.com, antilen@nitt.edu
04312504623, 9789178830