Dr . Sandip Kumar Dhara
Journal Publications
List of Publications in Peer Reviewed Journal (Selected):
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Surface optic modes in ternary aligned crystalline InGaN/GaN multi-quantum well nanopillar arrays
S.-E. Wu, Y.-W. Huang, T.-H. Hsueh, S. Dhara, Y.-F. Lai, C.-Y. Wang, and C.-P. Liu J. Raman Spectroscopy (In Press)2009
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Mechanism of recrystallization process in epitaxial GaN under dynamic stress field : Atomistic origin of planar defect formation
C. R. Das, S. Dhara, H. C. Hsu, L. C. Chen, Y. R. Jeng, A. K. Bhaduri, Baldev Raj, K. H. Chen, S. K. Albert,
J. Raman Spectroscopy (In Press) 2008.
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Phonon confinement and substitutional disorder in Cd1-xZnxS Nanocrystals
S. Sahoo, S. Dhara, V. Sivasubramanian, S. Kalavathy and A. K. Arora
J. Raman Spectroscopy (In Press) 2008.
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Phonon confinement in stressed silicon nanocluster
S. Sahoo, S. Dhara, S. Mahadevan and A. K. Arora
J. Nanoscience and Nanotechnology (In press) 2008.
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X-ray reflectivity studies on DLC films deposited by microwave ECR CVD: Effect of substrate bias
S. B. Singh, A. K. Poswal, M. Pandey, R. B. Tokas, N. Chand, S. Dhara, B. Sunderval, K. G. M. Nair , N. K. Sahoo, and D. S. Patil
Surface and Coatings Technology, 203 (2009) 986.
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Surface optical Raman modes in InN nanostructures
S. Sahoo, M. S. Hu, C. W. Hsu, L. C. Chen, K. H. Chen, A. K. Arora and S. Dhara
Appl. Phys. Lett. 93 (2008) 233116. (Virtual J. of Nanoscale Science & Technology, Vol. 18, Issue 25, 2008)
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Resonance Raman study of He+ ion implanted nanostructured ZnS
S. Saravana Kumar, M. Abdul Khadar, K. G. M. Nair, S. Dhara, P. Magudapathy
J. Raman Spectroscopy 39 (2008) 1900.
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Mechanism of bright red emission in Si nanoclusters
S. Dhara, C.-Y. Lu, K.G.M. Nair, K.-H. Chen, C.-P. Chen, Y.-F. Huang, C. David, L.-C. Chen and Baldev Raj
Nanotechnology 19 (2008) 395401. http://nanotechweb.org/cws/article/lab/35583
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Recrystallization of epitaxial GaN under indentation
S. Dhara, C. R. Das, H. C. Hsu, Baldev Raj, A. K. Bhaduri, S. K. Albert, L. C. Chen, K. H. Chen and Ayan Ray
Appl. Phys. Lett. 92 (2008) 143114. http://research.ncku.edu.tw/re/reck/e/20081107/home.html
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Excitation energy dependence of electron-phonon interaction in ZnO nanoparticles
S. Sahoo, V. Sivasubramanian, S. Dhara and A. K. Arora
Solid State Communications 147 (2008) 271.
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Long range ferromagnetic ordering at room temperature in Co+ implanted TiO2 nanorods
S. Dhara, J. J. Wu, G. Mangamma, S. Bera, C. T. Wu, P. Magudapathy, C. C. Yu, M. Kamruddin, K. G. M. Nair, A. K. Tyagi, L. C. Chen, and K. H. Chen.
Nanotechnology 18 (2007) 325705.
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Formation, Dynamics, and Characterization of Nanostructures by Ion Beam Irradiation
S. Dhara
Invited Review Article in Critical Reviews in Solid State and Material Sciences 32 (2007) 1-50. http://www.microscopy analysis.com/download/914/LiteratureHighlights_Nov2007.pdf
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Multiphonon Raman scattering in GaN nanowires
S. Dhara, Sharat Chandra, G. Mangamma, S. Kalavathi, P. Shankar, K. G. M. Nair, A. K. Tyagi, C. W. Hsu, C. C. Kuo, L. C. Chen K. H. Chen, and K. K. Sriram
Appl. Phys. Lett. 90 (2007) 213104.
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Formation and growth of embedded Indium nanoclusters by In2+ Implantation in Silica
P. Santhana Raman, K. G. M. Nair, R. Kesavamoorthy, B. K. Panigrahi, S. Dhara and V. Ravichandran
Appl. Phys. A 87 (2007) 709.
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Raman measurements and stress analysis in gallium ion-implanted gallium nitride epitaxial layers on sapphire
S. Mal, A. Singha, S. Dhara, A. Roy
Thin Solid Films 515 (2006) 2798.
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Ferromagnetism in cobalt doped n-GaN
S. Dhara, B. Sundaravel, K. G. M. Nair, R. Kesavamoorthy, M. C. Valsakumar, T. V. Chandrasekhar Rao, L. C. Chen, and K. H. Chen
Appl. Phys. Lett. 88 (2006) 173110
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Nitrogen ion beam synthesis of InN in InP(100) at elevated temperature
S. Dhara, P. Magudapathy, R. Kesavamoorthy, S. Kalavathi, V. S. Sastry, K. G. M. Nair, G. M. Hsu, L. C. Chen, K. H. Chen, K. Santhakumar and T. Soga
Appl. Phys. Lett. 88 (2006) 241904.
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Optical characterization of GaN by N+ implantation into GaAs at elevated temperature
S. Dhara, P. Magudapathy, R. Kesavamoorthy, S. Kalavathi, K. G. M. Nair, G. M. Hsu, L. C. Chen, K. H. Chen, K. Santhakumar and T. Soga
Appl. Phys. Lett. 87 (2005) 261915
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Formation and in-situ dynamics of metallic nanoblisters in Ga+ implanted GaN nanowires
A. Datta, S. Dhara, S. Muto, C. W. Hsu, C. T. Wu, C. H. Shen, T. Tanabe, T. Maruyama, K. H. Chen, L. C. Chen, and Y. L. Wang
Nanotechnology, 16 (2005) 2764.
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Mechanism of nanoblister formation in Ga+ self-ion implanted GaN nanowires
S. Dhara, A. Datta, C.T. Wu, K. H. Chen, Y. L. Wang, S. Muto, T. Tanabe, C. W. Hsu, C. H. Shen, L. C. Chen, and T. Maruyama
Appl. Phys. Lett. 86 (2005) 203119.
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Blue luminescence of Au nanoclusters embedded in silica matrix
S. Dhara, Sharat Chandra, P. Magudapathy, S. Kalavathi, B. K. Panigrahi, K.G.M. Nair, V.S. Sastry, C. W. Hsu, C.T. Wu, K.H. Chen, and L.C. Chen
J. Chem. Phys. 121 (2004) 12595 (Virtual J. of Nanoscale Science & Technology, Vol. 10, Issue 26, 2004)
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‘Spillout’ effect in gold nanoclusters embedded in c-Al2O3(0001) matrix
S. Dhara, B. Sundaravel, T. R. Ravindran, K. G. M. Nair, C. David, B. K. Panigrahi, P. Magudapathy, and K. H. Chen
Chem. Phys. Lett. 399 (2004) 354.
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Comment on “Gold nanowires from silicon nanowire templates” [Appl. Phys. Lett. 84, 407 (2004)]
S. Dhara and K. G. M. Nair
Appl. Phys. Lett. 85 (2004) 692.
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Hexagonal-to-cubic phase transformation in GaN nanowires by Ga+-implantation
S. Dhara, A. Datta, C. W. Hsu, C. T. Wu, C. H. Shen, Z. H. Lan, K. H. Chen, L.C. Chen,Y. L. Wang, C. C. Chen
Appl. Phys. Lett. 84 (2004) 5473.
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Blue shift of yellow luminescence band in self-ion implanted GaN nanowire
S. Dhara, A. Datta,C. T. Wu, Z. H. Lan, K. H. Chen,Y. L. Wang, L. C. Chen, C. W. Hsu, H. M. Lin, C. C. Chen
Appl. Phys. Lett. 84 (2004) 3486. (Virtual J. of Nanoscale Science & Technology, Vol. 9, Issue 18, 2004)
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Characterization of nanodome on GaN nanowires formed with Ga ion irradiation
S. Muto, S. Dhara, A. Datta, C.-W. Hsu, C.-T. Wu, C.-H. Shen, L.-C. Chen, K.-H. Chen, Y.-L. Wang, T. Tanabe, T. Maruyama, H.-M. Lin, C.-C. Chen
Materials Transactions 45 (2004) 435.