Thesis and Guide details:
Details of CSIR Fellowship/ Associateship held, if any or from other sources/ agencies.
Significant foreign assignments:
(a) Significant contributions to science and/ or technology development by the nominee
based on the work done in India during most part of last 5 years:
The main emphasis of the Prof. Mandar Deshmukh’s work during last five years is to study
mesoscopic systems, particularly 2D materials that are of great current interest from the fundamental
physics as well as applications angle. Mandar’s group has developed novel techniques and analysis tools that
allow studies of nanoscale physics, which are crucial in these aspects.
Mandar focused broadly on probing two properties – namely electronic and elastic response of
mesoscopic systems. They have a very close connection and so a better understanding of these two
properties is the key for the advancement of knowledge in this field. Main conclusions on selected materials
are highlighted below.
Studies of electronic properties:
Graphene:
Recently Mandar has studied tunable superlattice in graphene - this unique experiment realizes a
Kronig-Penny model for Dirac electrons. This tunable superlattice modifies the bandstructure
continuously to realize new Dirac cones in the band structure. (Nano Lett., 13, 3990 (2013); 16
citations/Google Scholar). His work in the quantum Hall regime offers insight into edge state
equilibration.
In earlier experiments on graphene Mandar has studied the properties of Dirac electrons in graphene
in the quantum Hall regime to understand non-equilibrium breakdown of the quantum Hall state.
(Phys. Rev. B 80, 081404(R) (2009); 20 citations/Google Scholar).
Semiconducting nanowires:
Semiconducting nanowires are platforms for studying tunable spin transport and Mandar’s work has
explored how the spin-orbit interaction can be tuned in InAs nanowires (Phys. Rev. B 79, 121311(R),
2009; 39 citations/Google Scholar).
Realizing new geometries of field effect transistors can improve the ability of the switching
characteristics. Mandar made a key innovation by realizing a wrapgate transistor with InAs
nanowires (Appl. Phys. Lett. 99, 173101 (2011); 12 citations/Google Scholar).
Correlated systems:
A system that Mandar has explored in great detail is the metal insulator transition (MIT) in VO2.
Mandar has tried to answer the question – is it possible to tune the MIT by doping the system
electrostatically? They show that this is indeed possible. ((Nano Lett. 13, 4685 (2013) (3
citations/Google Scholar); Appl. Phys. Lett. 99, 062114 (2011) (21 citations/Google Scholar); Nano
Lett., 2012, 12, 6272(10 citations/Google Scholar). Studies of elastic properties:
One of the key components of Mandar’s research is to answer the question – do elastic properties of
nanoscale systems across phase transitions get significantly modified because of the modification of
the electron-phonon coupling? His work shows that the plasmons associated with the CDW can
modify the properties in nanoscale CDW system. (Physical Review Letters 110, 166403 (2013) (2
citations/Google Scholar); Physical Review B 82, 155432 (2010) (8 Citations/Google Scholar).
Using high frequency techniques, Mandar led the experiments that studied the elastic properties of
graphene using nanomechanical resonators. He measured the negative thermal expansion
coefficient of graphene from 300K-30K (Nanotechnology 21, 165204 (2010); 90 citations/Google
Scholar). The innovation to use nanomechanics to study correlated systems and elastic properties is
unique on a global scale.
Summarizing, Professor Mandar Deshmukh has 35 publications to his credit of which 24 are from his
independent research group after he joined TIFR in India.
(b) Impact of the contributions in the field concerned:
Mandar’s work has been published in high impact journals like Nano Letters (Impact factor 13; 5 papers in
the last two years year), and Physical Review Letters and has been recognized for its high quality in many
ways.
It is to be noted that his work on nanowire transistors has been featured in Nature in the News and Views
(Nature 481, 152 (2012).) where the work is judged by the article to have the potential to change the way
nanowire transistors are made in the future.
In addition, the very fact that he received very prestigious international awards/fellowships already, in
particular IBM Faculty Award as recognized by an international industry, speaks in favor of technological
impact his basic research work would have. Finally, he has a total 1420 of citations and his H-index is 16 (based on Google Scholar), and this remarkable
citation endorses impactful nature of his scientific output.
Places where work of last 5 years has been referred/ cited in Books, Reviews:
Names of the industries in which the technology (ies) has (have) been used :
The achievements already been recognised by Awards by any learned body:
The Awardee a fellow of the Indian National Science Academy/Indian Academy of Sciences/National
Academy of Sciences/Others:
The Awardee delivered invited lecture(s) in India/abroad and/or chaired any scientific
Internatiional Conference Symposium:
List of Awardee's 10 most significant publications.
List of Awardee's 5 most significant publications during the last 5 years
List of Awardee's 5 most significant publications from out of work done in India
during the last five years:
Complete list of publications in standard refereed journals:
Complete list of publications with foreign collaborators (indicating your status
as author):
List of papers published in Conferences /Symposia/ Seminars, etc:
List of the most outstanding Technical Reports/ Review Articles:
Statement regarding collaboration with scientists abroad:
Collaborator Junqiao Wu (UC Berkeley) synthesized the VO2 nanowires. These were used to
nanofabricate and make devices in TIFR. All measurements and analysis done in TIFR. (Nano Lett.,13
4685 (2013) and Applied Physics Letters, 99, 062114 (2011))
Collaborator Peter Littlewood (ANL/UChicago) provided some theoretical support for analysis of CDW
related elastic property changes. (Phys. Rev. Lett. 110, 166403 (2013).)
Collaborator Aashish Clerk (McGill) provided theoretical support in one experiment. (Applied Physics
Letters, 99, 213104 (2011))
Collaborator Jeevak Parpia (Cornell University) provided analysis tools in one experiment. Physical
Review B, 81, 115459 (2010).
Work described in Cryogenics, 52, 461 (2012) largely done at Cornell in the group of Jeevak Parpia.
Work described in Nano Lett., 12, 6272 (2012) largely at UC Berkeley in the group of Junqiao Wu .
Total number of patents granted in last five years.
Details of Books published: