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Assistant Professor

Abhijeet L. Sangle

Email: alsangle[at]iit[dot]ac[dot]in

Phone: (+91) (022) 2159 6742

Education:

  • PhD ­ Materials Science, University of Cambridge, 2016 
  • (B.Tech. + M.Tech.) Dual degree ­ Metl. Engg. & Matls. Sci. IIT Bombay, 2011
Teaching

Abhijeet is interested in pedagogy of structure­property relationships and functional materials in general. 

UG courses: Structure of Materials (Autumn semester), Materials Processing Laboratory (Spring semester) 

PG courses: Principles and Applications of Ferroelectric and Piezoelectric materials (proposed, starting Spring semester 2024)

Research profile

Abhijeet works in the broad area of thin films of functional materials for various applications. He is particularly interested in employing nanostructuring to enhance various properties of thin films of functional materials. One of the main themes of his research is self­assembled vertically aligned nanocomposite (VAN) films incorporating functional materials such as piezoelectrics, ferroelectrics, thermoelectrics and photoactive materials for applications in the areas of tunable high frequency devices 1 , sensors and actuators; energy harvesting 2 and storage; non­volatile memories 3 , etc. Abhijeet leverages the pulsed laser deposition facilities available in the department to grow these films. Besides, he is also working towards building a multi­target co- sputter deposition facility equipped with advanced in situ diagnostics. Drawing inspiration from his prior work in aerosol­jet printing technology 4 , Abhijeet is also working on developing bespoke inks of functional materials for various printed electronic devices. In the past, Abhijeet was a part of the corporate R & D division of Applied Materials India, where he worked on large area deposition of thin films of various piezoelectric materials. Given his background in industry, Abhijeet is highly passionate about translational research, taking lab­scale ideas to working prototypes/scaling up studies.

Research interest
  • Thin films of functional materials 
  • Pulsed Laser Deposition and Sputter Deposition 
  • Self­assembled vertically aligned nanocomposite (VAN) thin films 
  • Ferroelectrics, piezoelectrics, photoelectrochemical green hydrogen generation, thermoelectrics, non­volatile memories

Schematic of PLD and VAN th in films

Schematic of Aerosol­jet printing process showing implementation of in situ mixing to print composite materials

SrTiO3­Sm2O3 (30­70 wt%) VAN films, 250nm thick (a) Cross­sectional STEM, (b) Plan- view STEM, (c) reciprocal space map, (d) AFM image showing topography. Source: Sangle, A. L., et al., Nanoscale (2018); STEM image credits: H. Wang group, TAMU (now at Purdue)

References
  1. Sangle, A. L. et al. Very high commutation quality factor and dielectric tunability in nanocomposite SrTiO3 thin films with Tc enhanced to >300 °C. Nanoscale 10, 3460–3468 (2018). 
  2. Sangle, A. L. et al. Very High Surface Area Mesoporous Thin Films of SrTiO3 Grown by Pulsed Laser Deposition and Application to Efficient Photoelectrochemical Water Splitting. Nano Lett 16, 7338–7345 (2016). 
  3. Lee, S. et al. Novel electroforming­free nanoscaffold memristor with very high uniformity, tunability, and density. Advanced Materials 26, 6284–6289 (2014). 
  4. Ou, C. et al. Enhanced thermoelectric properties of flexible aerosol­jet printed carbon nanotube­based nanocomposites. APL Mater 6, 096101 (2018).