Energetic ions, depending on
their mass and energy, have different roles in materials
science. The experiments in the field of nanomaterials,
exploiting the special features of ion beams were initiated at
IUAC about five years back. The areas of research and
investigations of ion beams in nananostructuring are (i)
synthesis of nanostructures and (ii) study of the modifications
of existing buried nanoparticles in a matrix so as to explore
the possibility of engineering the size and shape of the
nanostructures. IUAC has the facilities to provide (i) 1-1.5
keV wide beam (2 inch diameter), (ii) typically ~100 keV to 1
MeV ions of C, N, O, Ar, Kr etc. and (iii) swift heavy ions
(energies from 50 MeV to 200 MeV of Li, C, Si, Ni, Ag, Au,
etc). All these have been effectively used for themes stated
above and noteworthy results have been obtained in synthesis of
different nanocomposites (metal-silica, metal-polymers,
metal-ZnO etc.), ripples at surface and engineering the size
and shape of particles embedded in silica matrix. Some
activities are initiated on possible applications as well as
For a review of recent
work in this field, please see
acknowledge Current Science for giving permission to use the
published work in this website).
Recent Publications (2009-2011) in this
Synthesis of nanostructured
“Quasi-aligned gold nanodots on structured silica
surface: Experimental and atomistic simulations
investigations”, Saif A. Khan, Devesh K. Avasthi,
Dinesh C. Agarwal, Udai B. Singh and Debdulal
Kabiraj, Nanotechnology 22 (2011) 23530.
“Engineering of hydrophilic and plasmonic
properties of Ag thin film by atom beam
irradiation”, Udai B. Singh, D.C. Agarwal, S. A.
Khan, Manish Kumar, A. Tripathi, R. Singhal,
B.K.Panigrahi, and D.K. Avasthi, Applied
Surface Science 258 (2011) 1464–1469
“Creation of Self organized gold nanostructures by
keV ion beam irradiation”, U. B. Singh, D.C.
Agarwal, S.A. Khan, A. Tripathi, Ajay Kumar, R. K.
Choudhury, B.K.Panigrahi, and D.K. Avasthi,
Radiation Effects and Defects in
166 (2011) 553.
“Nanopattern formation on n-Si(100) surface by ion
irradiation” Tanuj Kumar, S. A. Khan, U. B. Singh,
S. Verma and D. Kanjilal, , Solid State Physics,
Proceeding of the 55th DAE Solid State Physics
Symposium 2010, AIP Conference Proceedings, 1349
“Synthesis of nanocrystalline α-
ZnO-porous silicon interface: Phase
transition study” R. G. Singh, Fouran Singh,
R. M. Mehra, D. Kanjilal and V. Agarwal,
Solid State Communications 151 (2011)
Synthesis of Au nanoparticles at the surface and
embedded in carbonaceous matrix by 150 keV Ar ion
irradiation. Jai Prakash, A.
Tripathi, V. Riato, J. C. Pivin, Jalaj Tripathi,
Keun Hwa Chae, Sanjeev Gautam, P.
Kumar, K. Asokan, D.K.Avasthi , J. Phys. D:
Appl. Phys. 44, 125302(2011).
“Influence of mesoporous substrate morphology on
the structural, optical and electrical properties
of RF sputtered ZnO layer deposited over Porous
silicon nanostructure”, Yogesh
J. Escorcia Garcia, Fouran Singh, S. Olive,
V. V. Sivakumar, D. Kanjilal, V. Agarwal,
Appl. Surface Science, (2011)
“Formation of nano dots on GaAs by 50 keV
ion irradiation” Tanuj Kumar, S. A. Khan, U. B.
Singh, S. Verma and D. Kanjilal, Applied Surface
Science 2011 (in Press)
kinetics of ZnO nanocrystallites: Structural,
optical and photoluminescence properties tuned by
thermal annealing” R. G. Singh, Fouran Singh, Vinod
Kumar, R.M. Mehra, Current Applied Physics 11 (2011)
‘Synthesis, characterization and thermal induced
structural transformation in silver fullerene
nanocomposite thin films for applications in
optical devices, R. Singhal, D.C. Agarwal, Y.K.
Mishra, D. Kabiraj, G. Mattei, J.C. Pivin, R.
Chandra, D.K. Avasthi, J. of Appl. Phys. 107
Surface patterning on indium phosphide with low
energy Ar atoms bombardment: an evolution from
nanodots to nanoripples; Indra Sulania, Ambuj
Tripathi, D. Kabiraj, Matthieu Lequeux and Devesh
Avasthi; Advance Material Letters, 1(2), 2010,
Hydrogen induced lattice expansion and
crystallinity degradation in palladium
nanoparticles: Effect of hydrogen concentration,
pressure, and temperature, Manika Khanuja, B. R.
Mehta, Pragya Agar, P. K. Kulriya, and D. K.
Avasthi, J. Appl. Phys. 106 (2009) 093515.
Ge nanocrystals embedded in a GeOx
matrix formed by thermally annealing of Ge oxide
films, K.Vijayarangamuthu, S. Rath, D. Kabiraj, D.
K. Avasthi, P.K.Kulriya, V.N.Singh, B.R.Mehta,
Journal of Vacuum Science and Technology 27 (2009)
Nanoparticle-Induced Biodegradation of Poly(
ε-caprolactone), Narendra K. Singh, Rathindra M.
Banik, P K. Kulriya, Devesh K. Avasthi, Sudip
Malik, and Pralay Maiti, Nanoscience and
Nanotechnology Letters 1 (2009) 52.
Radiation-resistant behavior of Poly(vinylidene
fluoride)/Layered silicate nanocomposites, Vimal K.
Tiwari, Pawan K. Kulriya, Devesh K. Avasthi, and
Pralay Maiti, ACS Appl. Mater. Interfaces, 1(2)
Synthesis of plasmonic nanocomposite for diverse
applications, D. K. Avasthi, Y. K. Mishra, R.
Singhal, D. Kabiraj, S. Mohapatra,
Mohanta, N. K. Gohil, N. Singh, Journal of
Nanotechnology, 9 (2009) 1.
“White light emission from chemically synthesized
ZnO–porous silicon nanocomposite” R G Singh, Fouran
Singh, D Kanjilal, V Agarwal and R M Mehra, J.
Phys. D: Appl. Phys. 42 (2009) 062002.
Modifications of nanostructured materials swift heavy
Evolution and tailoring of plasmonic properties in
Ag:ZrO2 nanocomposite films by swift heavy ion
irradiation, Manish Kumar, P. K. Kulriya, J. C.
Pivin, and D. K. Avasthi, Journal of Applied
Physics 109 (2011)044311.
“Softening of phonons by lattice defects and
structural strain in heavy ion irradiated
nanocrystalline zinc oxide films”, Fouran Singh, R.
G. Singh, Vinod Kumar, S. A. Khan, and J. C. Pivin,
J. Appl. Phys. 110 (2011) 083520.
“Swift heavy ion interaction with silver–silica
nanocomposites: an experimental surface plasmon
resonance study”, Fouran Singh, J. C. Pivin,
Doriana Dimova-Malisnovska, and J. P. Stoquert, J.
Phys. D: Appl. Phys., 44 (2011) 325101.
“Structural and spectroscopic modifications of
nanocrystalline zinc oxide films induced by swift
heavy ions”, Sebiha Rehman, R. G.
J. C. Pivin, Waseem Bari, Fouran Singh,
Vacuum, 86 (2011) 87.
“Ionoluminescence studies of combustion synthesized
Dy3+ doped nanocrystalline forsterite”,
B.N. Lakshminarasappa, S.C. Prashantha, Fouran
Singh, Current Applied Physics, 11 (2011)
“Luminescence studies on swift heavy ion irradiated
nanocrystalline aluminum oxide,
K.R. Nagabhushana”, B.N. Lakshminarasappa, D.
Revannasiddaiah, Fouran Singh, Journal of
Luminescence, 131 (2011) 764.
Nano/micro-structuring of oxide thin film under SHI
irradiation R.S. Chauhan, D.C. Agarwal, S. Kumar,
S.A. Khan, D. Kabiraj, I. Sulania, D.K. Avasthi and
W. Bolse; Vacuum, Volume 86, Issue 1, 4 July 2011,
Study on synthesis of magnetic nanocomposite
(Ni-Teflon) by swift heavy ion beam
Jai Prakash, A. Tripathi, J. C, Pivin, Jalaj
Tripathi, A. K. Chawla, R. Chandra, S. S. Kim, K.
Asokan, D. K. Avasthi. , Adv. Mat. Lett. 2,
Swift heavy ion-induced surface nanopatterning of
indium oxide films, Neeti Tripathi, A. Tripathi, S.
Rad. Eff. and Def. in solids 166, 578(2011).
“Enhancement of LPG sensing properties in
nanocrystalline zinc oxide thin film by high
electronic excitation”, Ravikiran B. Birajadar,
Arindam Ghosh, Anil Ghule, Fouran Singh, and
Ramphal Sharma, Sensors and Actuators B: Chemical,
Enhancement of ferromagnetism in Pd nanoparticle by
swift heavy ion irradiation, P. K. Kulriya, B. R.
Mehta, D. K. Avasthi, D. C. Agarwal, P. Thakur,N.
B. Brookes, A. K. Chawla, and R. Chandra, Applied
Physicis Letters 96, (2010) 053103.
Damaged carbon nanotubes get healed by ion
irradiation, Kiran jeet, V.K. Jindal, L.M.
Bharadwaj, D.K. Avasthi and K.
Dharamveer, J. of Appl. Phys.
tracks in silica for engineering the embedded
nanoparticles’, D.K. Avasthi, Y.K. Mishra, F.
Singh, J. P. Stoquert, Nucl. Instr. and Meth. B
‘Studies on carbon nanotubes under extreme
conditions’, D.K. Avasthi, Amit Kumar, R. Singhal,
A. Triapthi and D.S. Mishra, , J. of nanoscience
and nanotechnology 10(2010)3767.
Structural phase transformation in ZnS
nanocrystalline thin films by swift heavy ion
irradiation, Shiv P. Patel, A.K. Chawla, Ramesh
Chandra, Jai Prakash, P.K. Kulriya, J.C. Pivin, D.
Kanjilal and Lokendra Kumar, Solid State
Communications, 150 ( 2010)1158.
of SHI irradiated nano semiconductor: conducting
polymer composite” by S. Chowdhury, A.M.P. Hussain,
G.A. Ahmed, F. Singh, D.K. Avasthi, A. Choudhury,
Journal of Luminescence 130 (2010) 326.
“Low temperature resistivity study of
nanostructured polypyrrole films under electronic
excitations” Subhash Chandra, S. Annapoorni, Fouran
Singh, R.G. Sonkawade, J.M.S. Rana, R.C. Ramola,
Nucl. Instrum. and Methods B 268 (2010) 62.
Ion Beam Induced Modification of Metal
Nanoparticles Dispersed Polymeric Films; Shah,
Sejal; Singh, N. L.;Gavade, Chaitali;Shivakumar,
V.;Sulania, Indra;Tripathi, A.; Singh, F;Avasthi,
D. K.;Upadhyay, R. V.; Integrated Ferroelectrics,
Volume 117,Number 1, 2010 , pp. 97-103(7)
Swift heavy ion irradiation induced modification of
the microstructure of NiO thin films,
P. Mallick, Chandana Rath, Jai Prakash, D.K.
Mishra, R.J. Choudhary, D.M. Phase, A. Tripathi,
D.K. Avasthi, D. Kanjilal, N.C. Mishra , Nucl.
Instru. and Meth. B 268, 1613-1617(2010)
propylene)/layered silicate nanocomposites: The
effect of swift heavy ion, Vimal K. Tiwari, Pawan
K. Kulriya, Devesh K. Avasthi and Pralay Maiti, J.
Phys. Chem. B, 113 (2009)11632.
Swift heavy ion induced modifications of optical
and microstructural properties of silver-fullerene
C60 nanocomposite, R. Singhal, D. C. Agarwal, Y. K.
Mishra, S.Mohapatra, D. K. Avasthi, A. K. Chawla,
R. Chandra and J. C. Pivin, Nucl. Instrum. and
Meth. B 267(2009)1349.
Electronic excitation induced tuning of surface
plasmon resonance of Ag nanoparticles in fullerene
C70 matrix, R. Singhal, D. C. Agarwal, Y. K.
Mishra, F. Singh, J. C. Pivin, R. Chandra and D. K.
Avasthi, J. Phys. D : Appl. Phys.
“Synthesis of silica: Metals nanocomposites and
modification of their structure by swift heavy ion
irradiation” J.C. Pivin, Fouran Singh, Y. Mishra,
D.K. Avasthi, J.P. Stoquert,
Surface & Coatings Technology, 203
“Enhancement of field emission properties in
nanocrystalline diamond films upon 100 MeV silver
ion irradiation”, Huang-Chin Chen, Umesh Palnitkar,
Balakrishnan Sundaravel, I-Nan Lin, Abhinav Pratap
Singh, and Ravi Kumar, Diamond & Related
Materials 18 (2009)164.
“Shape deformation of embedded metal nanoparticles
by swift heavy ion irradiation” Fouran Singh, S.
Mohapatra, J.P. Stoquert, D.K. Avasthi, J.C. Pivin,
Nucl. Instrum. and Method B 267 (2009) 936.
“Perpendicular magnetization of FePt particles in
silica induced by swift heavy ion irradiation” J C
Pivin, Fouran Singh, O Angelov and L Vincent, J.
Phys. D: Appl. Phys. 42(2009)025005.
“Electronic excitations induced modifications of
structural and optical properties of ZnO-porous
silicon nanocomposites” R.G. Singh, Fouran Singh,
I. Sulania, D. Kanjilal, K. Sehrawat, V. Agarwal,
R.M. Mehra, Nucl. Instrum. and Methods B, 267
“Modifications of structural, optical and
electrical properties of nanocrystalline bismuth
sulphide by using swift heavy ions” R.R. Ahire,
Abhay A. Sagade, S.D. Chavhan, V. Huse, Y.G.
Gudage, Fouran Singh, D.K. Avasthi, D.M. Phase,
Ramphal Sharma, Current Applied Physics 9 (2009)
Studies of optical properties and SHI irradiation
on PbS sensitized Nanoporous TiO2 network, Nabanita
Dutta, Dambarudhar Mohanta, Indra Sulania and
Amarjyoti Choudhury; Journal of Optics, Vol 38,
Number 3 September 2009, pages 169-176
VLS-like growth and characterizations of dense ZnO
nanorods grown by e-beam process:, D C Agarwal, R S
Chauhan, D K Avasthi, I Sulania, D Kabiraj, P
Thakur, K H Chae, Amit Chawla, R Chandra, S B
Ogale, G Pellegrini and P Mazzoldi; J. Phys. D:
Appl. Phys. 42 035310 (2009)
Surface roughness and power spectral density study
of SHI irradiated ultra-thin gold films, P. Dash,
P. Mallick, H. Rath, A. Tripathi, Jai Prakash, D.K.
Avasthi, S. Mazumder, S. Varma, P.V. Satyam, N.C.
Mishra, Applied Surface Science, 256, 558