Industrial Consultancy & Sponsored Research (IC&SR) , IIT Madras
Vertical Growth of Nanoparticles Leading to Micrometer Long Brushes by Ambient Electrolytic Spray Deposition
Technology Category/Market
Technology: Vertical Growth of Nanoparticles Ambient Electrolytic Spray Deposition
Category: Micro & Nano Technologies
Industry: Biomedical,Environmental
Application: Nanotechnology applications, such as sensing, imaging, biology, and medicine
Market: The global market size was estimated at USD 3.69 billion in 2022 and is expected to grow at a compound annual growth rate (CAGR) of 33.1% from 2023 to 2030
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Problem Statement
- Chemical vapour deposition is a crucial process for controlled growth of aligned and unprotected nanostructures, particularly in thin film materials like graphene.
- Studies have focused on the block-by-block growth of single-crystalline Si/Si-Ge superlattice nanowires, carbon nanotubes, and oriented long single-crystalline Si/Si-Ge superlattice nanowires.
- The research on one-dimensional nanostructures, including walled carbon nanotubes, Germanium nanowires, core-shell nanostructures, and one-dimensional structures of protected panicles.
Technology
- i). An electrolytic spray emitter (1Aii), with a silver metal wire (1Ai) fitted to a nanoelectrospray ion source serving as an anode and dry acetonitrile (ACN) or other non-aqueous solvent serving as the spray solvent;
- ii). A copper clip that connects the silver wire to a high voltage power supply to apply an electric potential up to 1.5 kV to eject a plume of solvated silver ions (1Aiii);
- iii).A transmission electron microscopy (TEM) grid substrate (1Aiv) serving as mask between the emitter and the collector surface to mask the ejected plume of solvated silver ions;
- The growth occurs on the square-shaped patterns of the grid and accumulation of nanoparticles on the substrate results in one dimensional vertically oriented assembly of brush-like metal nanostructures.
Key Features/Value Proposition
Metal 1D Nanostructures Growth
- Electrolytic spray deposition of metal wires.
- Electrospray deposition of metal salts on grid substrates.
Metal wire: silver wire
Metal salts: silver acetate and palladium acetate
Deposition Substrates Method
- TEM grid, copper grid, nickel grid.
- Stainless steel wire mesh.
“Metal 1D Nanostructures Capture Air Contaminants”
- Uses micrometer-long brushes.
- Captures various air contaminants and particles.
Raman Spectroscopy for Contaminant Detection
- Utilizes high enhancement factor of nanostructured brushes.
Metal 1D Nanostructures Stability
- Utilizes micrometer long brushes.
Questions about this Technology?
Contact for Licensing
Research Lab
Prof. Pradeep T
Department of Chemistry
Intellectual Property
- IITM IDF Ref. 1267
- Patent No: IN 413067
Technology Readiness Level
TRL-3
Experimental proof of concept