Materials Design for Electronic, Electromechanical and Optical Functions

By Prof. Pavan Nukala | IISc Bangalore

Learners enrolled: 454 | Exam registration: 33

ABOUT THE COURSE:
This course provides a generalized framework to understanding various material properties (concentrating on electronic, electromechanical and optical properties). First, we discuss how material symmetry dictates the existence of properties, by understanding in depth what symmetry is, and how properties as tensors correlate to symmetry.

Next, we look at equilibrium properties, their origin from the purview of thermodynamics and a bit of statistical mechanics. Then we look at dissipative properties as analogues of friction coefficient, through Onsagers formulation.

We then look at properties as response functions and understand the relationship between equilibrium and dissipative properties (dielectric constant and conductivity for e.g.). We end by understanding how to measure these properties through various absorption and scattering spectroscopic tools starting from neV processes (transport measurements) to 10s of keV processes (x-ray based techniques).

By the end of the course, the student will learn and appreciate the necessary ingredients required to start the design of materials for desired functions.

INTENDED AUDIENCE: Physicists, Materials Scientists, Device Engineers, Mechanical engineers interested towards semiconducting and MEMS devices

PREREQUISITES: NOC 24- MM24 will be useful, not mandatory
Basic ideas of Miller Indices, Crystal systems etc will be useful, not mandatory

INDUSTRY SUPPORT: AMAT, LAM Research, Intel, Micron and all the semiconducting companies

Summary

Course Status :	Completed
Course Type :	Elective
Language for course content :	English
Duration :	12 weeks
Category :	Metallurgy and Material science & Mining Engineering Electronic Materials
Credit Points :	3
Level :	Undergraduate/Postgraduate
Start Date :	22 Jul 2024
End Date :	11 Oct 2024
Enrollment Ends :	05 Aug 2024
Exam Registration Ends :	16 Aug 2024
Exam Date :	02 Nov 2024 IST

Note: This exam date is subject to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Module 1:

Properties as relations between cause and effect. Properties as tensors, elementary tensor algebra, matter tensors, field tensors

Structure and symmetry: crystal systems, Bravais lattices, point groups, space groups

Structure and symmetry - property correlations: Neumann principle, case studies of pyroelectric properties (first rank tensor); dielectric constant, thermal/electrical conductivity (ohms law, hall effect: second rank tensors), piezoelectricity and second harmonic generation (third rank tensors), compliance/stiffness and electrostriction (4th rank tensors).

Module 2:

Equilibrium property predictions from thermodynamics: Equilibrium properties as double derivatives (or curvatures) of free energies, Cross-coupling (Stress/Strain, Polarization/Field, Temperature/Entropy). Revisit piezoelectricity/converse piezo, pyroelectricity/electrocaloric effects, thermal expansion/piezocaloric effects etc..

Phase transitions (first order, second order), order parameter, elementary stat-mech, equilibrium properties as fluctuation/correlations of order parameter/order parameters, Landau theory.

Module 3: Dissipative properties as entropy generating, Onsager’s formulation, electrical and thermal transport, diffusivity, electrical/thermal resistance, coupled dissipative properties: thermoelectric properties, electromigration.

Module 4: Dielectric constant as a case study. Atomistic origin, complex dielectric function. Refractive index. Kramers-Kronig relations.

Module 5: Small signal measurements, spectroscopy: impedence (nano eV energy losses), microwave spectroscopy, Brillouin, Raman (micro-m eV), optical (FTIR, UV Vis, Photoluminiscence, UPS: 0.1-10 eV), x-ray absorption and XPS (>100 eV).

Books and references

Class notes: most important reference
Physical Properties of Crystals by J.F. Nye: Oxford Science Publications
Space groups for Solid State Scientists by Burns and Glazer: Elsevier Publications
Solid state physics by Charles Kittel: John Wiley and sons
Statistical Mechanics of Phase Transitions by Yeomans: Oxford Science Publications
Solid state physics by Ashcroft and Mermin
Kinetics of Materials by Ballufi, Allen and Carter: Wiley and sons
Electronic properties of engineering materials: James D. Livingstone

Instructor bio

Prof. Pavan Nukala

IISc Bangalore

Prof. Pavan Nukala is an Assistant Professor at the Center for Nanoscience and Engineering, IISc Bangalore, India. He is a materials scientist by training. He did his bachelors and masters from IIT Madras in Metallurgical and Materials Engineering, PhD from the University of Pennsylvania. Later he was a post doc at University Paris Saclay, and a Marie Curie research fellow at the University of Groningen in the Netherlands. His research interests include understanding the physics of thin films and devices of various functional electro-mechanical and electronic materials including ferroelectric oxides, phase change materials, memristive and neuromorphic materials. His own expertise is on in situ atomic resolution microscopy and operando x-ray diffraction techniques.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 02 November 2024 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IISc Bangalore .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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