importance of nanowires has been steadily increasing in the development of various
nano-electronic devices, ranging from conductor inks used in electronic circuit
manufacturing to the production of touchscreens and infrared shields.
Researchers at National Chemical Laboratory (NCL),
Pune have developed an inexpensive technology for manufacturing of precision
silver nanowires that can be used in future nano-electronic devices.
Shekhar Mande, Director General, Council of Scientific and Industrial Research
(CSIR), inaugurated the pilot plant for continuous flow manufacture of silver
nanowires at the NCL campus.
The pilot plant at CSIR-NCL can produce as much as 500 grams a day and is scalable to any desired production rates. The international market price of silver nanowires of different sizes (20 to 100 nanometer diameter) varies from Rs. 18,000 to Rs. 43,000 per gram. The silver nanowires produced from this technology are at least 12 times cheaper than the global rates. Also, the process can be adjusted to manufacture a wide range of nanowires suitable for a variety of applications.
“The method of this synthesis is known chemistry but it was
possible using different control parameters in the lab. The purpose was to
create a technology that will compete to the world and get into the field of
electrical chemicals” said Dr.
Amol Kulkarni, lead researcher at Chemical Engineering and Process Development
India has been importing silver nanowires
for all its needs. The technology will help manufacturing of precision material
in large scale. Patents have been filed to protect the technology and the
product has been tested for various applications including conducting inks in
Dr. Mande said, “The global market for
the silver nanowires is very large. There are ample opportunities for the
nanowire manufacturers as there are very few producers in this sector. This
initiative of CSIR will proactively enter in this large space of long-term
This technology development was carried out under the Advanced
Manufacturing Technologies (AMT) initiative by the Department of Science and