Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras

Process for Fabricating Heterostructures with Two-dimensional Materials

Technology Category/ Market

Category –  Materials Science and Nanotechnology

Applications – Electronics system, Photonics, Sensors

Industry – Photonics, Electronics, Sensors technology

Market -Advanced materials is likely to be a US$10 billion market in India by 2028. Advanced materials market was valued at US$5 billion in 2021 and is expected to grow at a CAGR of about 10-12%.

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Problem Statement

  • Heterostructure fabrication with 2D materials is complex and costly, hindering scalability.
  • Current methods lack precision in aligning layers.
  • A simplified, cost-effective, and precise process is needed for easier exploration of 2D materials’ potential.

Technology

Simplified Heterostructure Fabrication:

  • The technology simplifies the fabrication of heterostructures using two-dimensional materials, such as h-BN and WS₂.

PMMA Coating:

  • It involves the application of a PMMA (poly methyl methacrylate) solution to create a film on the substrate, which serves as a crucial step in the process.

Mechanical Exfoliation:

  • The invention utilizes mechanical exfoliation, employing adhesive tape, to obtain two-dimensional material flakes.

Substrate Cleaning:

  • Successive cleaning of the substrates using acetone, isopropyl alcohol, and deionized water ensures a clean surface for material deposition.

Manual Alignment:

  • Precise alignment and positioning of the two-dimensional materials are achieved manually, without the need for expensive micromanipulators, making the process cost-effective and accessible.

Key Features/ Value Proposition

Technical Perspective:

  • Simplified fabrication of 2D material heterostructures.
  • Enhanced control in aligning different 2D materials.

User Perspective:

  • Improved accessibility and cost-effectiveness for researchers.
  • Greater control for studying new properties and applications.

Questions about this Technology?

Contact for Licensing

sm-marketing@imail.iitm.ac.in
ipoffice2@iitm.ac.in

Research Lab

Prof. Pramoda Kumar Nayak

Prof. Vidya Praveen Bhallamudi

Department of  Physics

Intellectual Property

  • IITM IDF Ref. 2373
  • IN 444786 (PATENT GRANTED)

Technology Readiness Level

TRL- 4-5

Technology validated in relevant environment

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