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'''Ambarish Ghosh''' is an Indian scientist, an Associate Professor at the Centre for Nano Science and Engineering (CeNSE), [[Indian Institute of Science]], [[Bangalore]]. He is known for his work on [[nanorobots]], [[active matter physics]], [[plasmonics|Plasmonics and Nanophotonics]] and [[liquid helium]].
'''Ambarish Ghosh''' is an Indian scientist, a faculty member at the Centre for Nano Science and Engineering (CeNSE), [[Indian Institute of Science]], [[Bangalore]]. He is also an associate faculty at the Department of Physics. He is known for his work on [[nanorobots]], [[active matter physics]], [[plasmonics|Plasmonics]], [[metamaterials|Metamaterials]] and electron bubbles in [[liquid helium]].


== Research work==
== Research work==
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===Magnetic nanorobots===
===Magnetic nanorobots===
In 2009 he along with [[Peer Fischer]] demonstrated the use of glancing-angle deposition to fabricate magnetic helical nanoswimmers,.<ref>{{cite journal |author= Ghosh, A. |author2= Fischer, P. |title= Controlled Propulsion of Artificial Magnetic Nanostructured Propellers |journal= Nano Letters |volume=9 |issue=6 |pages= 2243–2245 |date=2009 |doi= 10.1021/nl900186w }}</ref> His group figured out the dynamics of such nanorobots<ref>{{cite journal |author= Ghosh, A. |display-authors=etal |title= Analytical theory and stability analysis of an elongated nanoscale object under external torque |journal= Phys. Chem. Chem. Phys. |volume=15 |issue=26 |date=2013 |doi= 10.1039/C3CP50701G }}</ref> and presented techniques for independent control of such robots.<ref>{{cite journal |author= Mandal, P. |display-authors=etal |title= Independent positioning of magnetic nanomotors |journal= ACS Nano |volume=9 |issue=5 |date=2015 |doi=10.1021/acsnano.5b01518}}</ref>
In 2009 he along with [[Peer Fischer]] demonstrated the use of glancing-angle deposition to fabricate magnetic helical nanorobots,.<ref>{{cite journal |author= Ghosh, A. |author2= Fischer, P. |title= Controlled Propulsion of Artificial Magnetic Nanostructured Propellers |journal= Nano Letters |volume=9 |issue=6 |pages= 2243–2245 |date=2009 |doi= 10.1021/nl900186w }}</ref> His group worked out the theoretical formulae to describe the dynamics of such nanorobots<ref>{{cite journal |author= Ghosh, A. |display-authors=etal |title= Analytical theory and stability analysis of an elongated nanoscale object under external torque |journal= Phys. Chem. Chem. Phys. |volume=15 |issue=26 |date=2013 |doi= 10.1039/C3CP50701G }}</ref> and presented techniques for their independent control.<ref>{{cite journal |author= Mandal, P. |display-authors=etal |title= Independent positioning of magnetic nanomotors |journal= ACS Nano |volume=9 |issue=5 |date=2015 |doi=10.1021/acsnano.5b01518}}</ref>
In recent years his group has managed to demonstrate the various applications of helical nanorobots including techniques to move in [[blood]].<ref>https://www.nanowerk.com/spotlight/spotid=35255.php</ref> This includes the use of nanorobots in active colloidal manipulation <ref>{{cite journal |author= Ghosh, S.|author2= Ghosh, A. |title= Mobile nanotweezers for active colloidal manipulation |journal= Science Robotics |volume=3 |issue=14 |date=2018 |doi=10.1126/scirobotics.aaq0076 }}</ref> and as probes for sensing the environment inside living cells.<ref>{{cite journal |author= Pal, M. |display-authors=etal |title= Maneuverability of Magnetic Nanomotors Inside Living Cells |journal= Advanced Materials |volume=30 |issue=22 |date=2018 |doi=10.1002/adma.201800429 }}</ref><ref>{{cite journal |author= Ghosh, A. |display-authors=etal |title= Helical Nanomachines as Mobile Viscometers |journal= Advanced Functional Materials |volume=28 |issue=25 |date=2018 |doi=10.1002/adfm.201705687 }}</ref>
In recent years his group has managed to demonstrate various applications of helical nanorobots including techniques to move in important biological environments, such as [[blood]].<ref>https://www.nanowerk.com/spotlight/spotid=35255.php</ref> His group also showed the application of nanorobots in active colloidal manipulation <ref>{{cite journal |author= Ghosh, S.|author2= Ghosh, A. |title= Mobile nanotweezers for active colloidal manipulation |journal= Science Robotics |volume=3 |issue=14 |date=2018 |doi=10.1126/scirobotics.aaq0076 }}</ref> and as probes for sensing<ref name="Sensing">{{Cite web |url=https://www.youtube.com/watch?v=yBifxe57_74|title=Nanorobots as Mobile Viscometers}}</ref> the environment inside living cells.<ref>{{cite journal |author= Pal, M. |display-authors=etal |title= Maneuverability of Magnetic Nanomotors Inside Living Cells |journal= Advanced Materials |volume=30 |issue=22 |date=2018 |doi=10.1002/adma.201800429 }}</ref><ref>{{cite journal |author= Ghosh, A. |display-authors=etal |title= Helical Nanomachines as Mobile Viscometers |journal= Advanced Functional Materials |volume=28 |issue=25 |date=2018 |doi=10.1002/adfm.201705687 }}</ref>


===Plasmonics and Metamaterials===
===Plasmonics and Metamaterials===
Ambarish Ghosh and his group demonstrated a wafer scale technology to fabricate porous 3D plasmonic metamaterials which can be used over a wide range of wavelengths, including the visible. These metal-dielectric nanostructured films can be made in various geometries<ref>{{cite journal |author= Johnson Singh, H. |author2= Ghosh, A. |title= Porous Three Dimensional Arrays of Plasmonic Nanoparticles |journal= The Journal of Physical Chemistry C |volume=116 |issue=36 |date=2012 |doi=10.1021/jp3062702 }}</ref><ref>{{cite journal |author= Johnson Singh, H. |display-authors= etal |title= Wafer scale fabrication of porous three-dimensional plasmonic metamaterials for the visible region: chiral and beyond |journal= Nanoscale |issue=5 |date=2013|doi=10.1039/C3NR02666C }}</ref><ref>{{cite journal |author= Johnson Singh, H. |author2= Ghosh, A. |title= Harnessing magnetic dipole resonance in novel dielectric nanomaterials |journal= Nanoscale |issue=34 |date=2018 |doi=10.1039/C8NR04666B }}</ref> and configurations. Very recently, they have demonstrated a novel technique to integrate plasmonic nanoparticles with graphene in a sandwich configuration, allowing them to achieve unprecedented electromagnetic field enhancement and photodetection sensitivity<ref>{{cite journal |author= Paria, D.|display-authors=etal |title= Ultrahigh Field Enhancement and Photoresponse in Atomically Separated Arrays of Plasmonic Dimers |journal= Advanced Materials |issue=27 |date=2015 |doi=10.1002/adma.201404312 }}</ref>. In 2019, his group showed the application of metal-dielectric hybrid nanorods in active opto-fluidic manipulation of sub-micron colloids.
Ambarish Ghosh and his group has developed a wafer scale technology to fabricate porous 3D plasmonic metamaterial which can be used over a wide range of wavelengths, including the visible. This technology allows a wide range of materials and geometries, and therefore highly versatile. They have used Glancing Angle Deposition for generating various porous 3D dielectric structures and have integrated plasmonics to develop an arrangement of metal-dielectric layers in 3D.
Very recently, they have demonstrated a conceptually novel method to integrate plasmonic nanoparticles with graphene, allowing them to achieve unprecedented EM field enhancement and photodetection sensitivity.


===Liquid Helium and Multi-electron Bubble===
===Electron bubbles in Liquid Helium===
The group led by Ambarish Ghosh demonstrated trapping<ref>{{cite journal |author= Vaisakh Vadakkumbatt|display-authors=etal |title= Studying electrons on curved surfaces by trapping and manipulating multielectron bubbles in liquid helium |journal= Nature Communications |issue=5 |date=2014 |doi=doi.org/10.1038/ncomms5571 }}</ref> of multielectron bubbles in liquid helium-4, which can open up new avenues in the study of two-dimensional electron systems at high densities, and on curved surfaces. The same group also performed high speed imaging<ref name="EB">{{Cite web |url=https://www.youtube.com/watch?v=bjDl23xBdyE|title=Electron Bubble Explosion in Liquid Helium}}</ref> of the “explosion” of an electron bubbles triggered by focused ultrasound.


== Awards and honors ==
== Awards and honors ==
The [[Council of Scientific and Industrial Research]], the apex agency of the Government of India for scientific research, awarded him the [[Shanti Swarup Bhatnagar Prize for Science and Technology]] for his contributions to physical sciences in 2018.<ref name="Bhatnagar">{{Cite web |url=http://ssbprize.gov.in/WriteReadData/LatestUpdates/201809260331397455401SSBPrize2018.pdf |title=Shanti Swarup Bhatnagar Prize (SSB) for Science and Technology 2018|date=2018-09-26 |publisher=Shanti Swarup Bhatnagar Prize |access-date=2018-09-26}}</ref>
Ambarish received the Young Career Award in Nano Science and Technology for 2017 from DST Nanomission, India. The [[Council of Scientific and Industrial Research]], the apex agency of the Government of India for scientific research, awarded him the [[Shanti Swarup Bhatnagar Prize for Science and Technology]] for his contributions to physical sciences in 2018.<ref name="Bhatnagar">{{Cite web |url=http://ssbprize.gov.in/WriteReadData/LatestUpdates/201809260331397455401SSBPrize2018.pdf |title=Shanti Swarup Bhatnagar Prize (SSB) for Science and Technology 2018|date=2018-09-26 |publisher=Shanti Swarup Bhatnagar Prize |access-date=2018-09-26}}</ref> He received the Prof. Ramakrishna Rao Chair Professorship<ref name="RRC">{{Cite web |url=https://www.iisc.ac.in/about/endowed-chairs/endowed-chairs-for-the-faculty/ |title= Ramakrishna Rao Chair Professorship|publisher=Indian Institute of Science |access-date=2019-11-03}}</ref> from 2017-2020.


== References ==
== References ==

Revision as of 08:10, 3 November 2019

Ambarish Ghosh
Born (1973-12-18) December 18, 1973 (age 51)
Kolkata, India
NationalityIndian
Alma mater
Awards
Scientific career
Fields
Institutions
Doctoral advisorHumphrey Maris
Websitehttp://www.cense.iisc.ac.in/ambarish/

Ambarish Ghosh is an Indian scientist, a faculty member at the Centre for Nano Science and Engineering (CeNSE), Indian Institute of Science, Bangalore. He is also an associate faculty at the Department of Physics. He is known for his work on nanorobots, active matter physics, Plasmonics, Metamaterials and electron bubbles in liquid helium.

Research work

Indian Institute of Science

Magnetic nanorobots

In 2009 he along with Peer Fischer demonstrated the use of glancing-angle deposition to fabricate magnetic helical nanorobots,.[1] His group worked out the theoretical formulae to describe the dynamics of such nanorobots[2] and presented techniques for their independent control.[3] In recent years his group has managed to demonstrate various applications of helical nanorobots including techniques to move in important biological environments, such as blood.[4] His group also showed the application of nanorobots in active colloidal manipulation [5] and as probes for sensing[6] the environment inside living cells.[7][8]

Plasmonics and Metamaterials

Ambarish Ghosh and his group demonstrated a wafer scale technology to fabricate porous 3D plasmonic metamaterials which can be used over a wide range of wavelengths, including the visible. These metal-dielectric nanostructured films can be made in various geometries[9][10][11] and configurations. Very recently, they have demonstrated a novel technique to integrate plasmonic nanoparticles with graphene in a sandwich configuration, allowing them to achieve unprecedented electromagnetic field enhancement and photodetection sensitivity[12]. In 2019, his group showed the application of metal-dielectric hybrid nanorods in active opto-fluidic manipulation of sub-micron colloids.

Electron bubbles in Liquid Helium

The group led by Ambarish Ghosh demonstrated trapping[13] of multielectron bubbles in liquid helium-4, which can open up new avenues in the study of two-dimensional electron systems at high densities, and on curved surfaces. The same group also performed high speed imaging[14] of the “explosion” of an electron bubbles triggered by focused ultrasound.

Awards and honors

Ambarish received the Young Career Award in Nano Science and Technology for 2017 from DST Nanomission, India. The Council of Scientific and Industrial Research, the apex agency of the Government of India for scientific research, awarded him the Shanti Swarup Bhatnagar Prize for Science and Technology for his contributions to physical sciences in 2018.[15] He received the Prof. Ramakrishna Rao Chair Professorship[16] from 2017-2020.

References

  1. ^ Ghosh, A.; Fischer, P. (2009). "Controlled Propulsion of Artificial Magnetic Nanostructured Propellers". Nano Letters. 9 (6): 2243–2245. doi:10.1021/nl900186w.
  2. ^ Ghosh, A.; et al. (2013). "Analytical theory and stability analysis of an elongated nanoscale object under external torque". Phys. Chem. Chem. Phys. 15 (26). doi:10.1039/C3CP50701G.
  3. ^ Mandal, P.; et al. (2015). "Independent positioning of magnetic nanomotors". ACS Nano. 9 (5). doi:10.1021/acsnano.5b01518.
  4. ^ https://www.nanowerk.com/spotlight/spotid=35255.php
  5. ^ Ghosh, S.; Ghosh, A. (2018). "Mobile nanotweezers for active colloidal manipulation". Science Robotics. 3 (14). doi:10.1126/scirobotics.aaq0076.
  6. ^ "Nanorobots as Mobile Viscometers".
  7. ^ Pal, M.; et al. (2018). "Maneuverability of Magnetic Nanomotors Inside Living Cells". Advanced Materials. 30 (22). doi:10.1002/adma.201800429.
  8. ^ Ghosh, A.; et al. (2018). "Helical Nanomachines as Mobile Viscometers". Advanced Functional Materials. 28 (25). doi:10.1002/adfm.201705687.
  9. ^ Johnson Singh, H.; Ghosh, A. (2012). "Porous Three Dimensional Arrays of Plasmonic Nanoparticles". The Journal of Physical Chemistry C. 116 (36). doi:10.1021/jp3062702.
  10. ^ Johnson Singh, H.; et al. (2013). "Wafer scale fabrication of porous three-dimensional plasmonic metamaterials for the visible region: chiral and beyond". Nanoscale (5). doi:10.1039/C3NR02666C.
  11. ^ Johnson Singh, H.; Ghosh, A. (2018). "Harnessing magnetic dipole resonance in novel dielectric nanomaterials". Nanoscale (34). doi:10.1039/C8NR04666B.
  12. ^ Paria, D.; et al. (2015). "Ultrahigh Field Enhancement and Photoresponse in Atomically Separated Arrays of Plasmonic Dimers". Advanced Materials (27). doi:10.1002/adma.201404312.
  13. ^ Vaisakh Vadakkumbatt; et al. (2014). "Studying electrons on curved surfaces by trapping and manipulating multielectron bubbles in liquid helium". Nature Communications (5). doi:doi.org/10.1038/ncomms5571. {{cite journal}}: Check |doi= value (help)
  14. ^ "Electron Bubble Explosion in Liquid Helium".
  15. ^ "Shanti Swarup Bhatnagar Prize (SSB) for Science and Technology 2018" (PDF). Shanti Swarup Bhatnagar Prize. 2018-09-26. Retrieved 2018-09-26.
  16. ^ "Ramakrishna Rao Chair Professorship". Indian Institute of Science. Retrieved 2019-11-03.
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