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Fabrication of Optical Meta Material for cloaking in visible wavelength

Primary Information

Domain

Advanced Materials

Project No.

7183

Sanction and Project Initiation

Sanction No: F.No.: 3-18/2015-T.S-I(Vol.III)

Sanction Date: 21/03/2017

Project Initiation date: 21/03/2017

Project Duration: 56

Partner Ministry/Agency/Industry

Department of Science and Technology

 

Role of partner:DST is part funding the project, as this is a very novel material development project.

 

Support from partner:50% of the total project Cost.

Principal Investigator

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Rabibrata Mukherjee
Indian Institute of Technology, Kharagpur

Host Institute

Co-PIs

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Pallab Banerji
Indian Institute of Technology Kharagpur

 

Scope and Objectives

Metamaterials are artificially structured materials which are engineered to exhibit unique properties that arise out of their internal structure and geometry, leading to

Deliverables

To fabricate large area metamaterial at visible wavelength by optimizing of tri-block copolymer thin film self organization leading to double gyroid internal architecture with 10 nm size. It will then be replicated in gold by selective etching and subsequent deposition. Emphasis will be on achieving large area defect free ordering.

 

Scientific Output

Controlling the Texture of Liquid Crystal Thin Films by imposing Lateral confinement.

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Project image

 

Results and outcome till date

PS-b-PMMA films were spin-coated onto a neutral flat and patterned substrate that balances the interfacial interactions toward the two blocks, where an end-functionalized random copolymer was used to generate the neutral brushes anchored to the surface. The morphology was indicative of symmetric wetting. The samples will be subject to thermal or solvent vapor annealing for subsequent morphological reorganization.

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Societal benefit and impact anticipated

This is like to lead to technological breakthrough.

Next steps

We will start working on controlling and modulation of the phase separated BCP morphology by varying spin coating conditions.

Publications and reports

Palash Dhara, Nandini Bhandaru, Anuja Das and Rabibrata Mukherjee, Transition from Spin Dewetting to continuous film in spin coating of Liquid Crystal 5CB, Scientific Reports, 8, 7169, 2018.

Patents

 

Scholars and Project Staff

Deepanjay Nimje, working since June 2018 Trapti Mudgal, working since April 2019

Challenges faced

Identification of suitable instrument for characterization of meta materials.

Other information

 

Financial Information

  • Total sanction: Rs. 22800000.00

  • Amount received: Rs. 17434400.00

  • Amount utilised for Equipment: Rs. 6540652.00

  • Amount utilised for Manpower: Rs. 270494.00

  • Amount utilised for Consumables: Rs. 1293299.00

  • Amount utilised for Contingency: Rs. 155725.00

  • Amount utilised for Travel: Rs. 322883.00

  • Amount utilised for Other Expenses: 134000.00

  • Amount utilised for Overheads: Rs. 2905733.00

Equipment and facilities

 

UV Vis Spectro Photo Meter with external DRA. (To be installed in July 2019)