Publications

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2010
Dhara, S, Chang CW, Tsai HM, Chen* LC, Chen KH.  2010.  Direct observation of amophization in load rate dependent nanoindentation studies of crystalline Si. Appl. Phys. Lett.. 96:253113.
Dhara, S, Yao LC, Wu CT, Hsu CW, Tu WS, Chen KH, Wang YL, Chen LC.  2010.  Focused ion beam induced nanowelding and defect doping as building block for nanoscale electronics in GaN nanowires. J. Phys. Chem.. C114:15260.
Kataria, S, Liu TW, Hsiao CL, Dhara S, Chen LC, Chen KH, Dash S, Tyagi AK.  2010.  Growth orientation dependent hardness for epitaxial wurtzite InN films. J. Nanosci. Nanotechnol.. 10:5170-5174.
Wang, CH, Hsu HC, Chang ST, Du HY, Wu CH, Shih HC, Chen LC, Chen* KH.  2010.  Platinum nanoparticles embedded in nitrogen-containing complexes for high methanol-tolerant oxygen reduction activity. J. Mater. Chem.. 20:7551-7557.
2009
Wang, CH, Chen CC, Hsu HC, Du HY, Chen CP, Hwang JY, Chen LC, C.Shih H, Stejskal J, Chen* KH.  2009.  Low methanol-permeable polyaniline/nafion composite membrane for direct methanol fuel cell. J. Power. Sources. 190:279-284.
Das, CR, Dhara S, Hsu HC, Chen LC, Jeng YR, Bhaduri AK, Raj B, Chen KH, Albert SK.  2009.  Mechanism of recrystallization process in epitaxial GaN under dynamic stress field : Atomistic origin of planar defect formation. J. Raman Spect.. 40:1881-1884.
2008
Du, H-Y, Wang C-H, Hsu H-C, Chang S-T, Chen U-S, Yen SC, Chen LC, Shih H-C, Chen* KH.  2008.  Controlled platinum nanoparticles uniformly dispersed on nitrogen-doped carbon nanotubes for methanol oxidation. Diamond & Relat. Mater.. 17:535-541.
Dhara*, S, Lu C-Y, Nair KGM, Chen KH, Chen C-P, Huang Y-F, David C, Chen LC, Raj B.  2008.  Mechanism of bright red emission in Si nanoclusters. Nanotechnology. 19:395401-(1-5).
Dhara*, S, Das CR, Hsu HC, Chen KH, Chen LC, Raj B, Bhaduri AK, Albert SK, Ray A.  2008.  Recrystallization of epitaxial GaN under indentation. Appl. Phys. Lett.. 92:143114.
Sahoo, S, Hu MS, Hsu CW, Chen LC, Chen KH, Arora AK, Dhara S.  2008.  Surface optical Raman modes in InN nanostructures. Appl. Phys. Lett.. 93:233116-(1-3).
2007
Wang, CH, Du H-Y, Tsai YT, Chen CP, Huang CJ, Chen LC, Chen* KH, Shih HC.  2007.  High performance of low electrocatalysts loading on CNT directly grown on carbon for DMFC. J. Power Sources. 171:55-62.
Dhara*, S, Wu JJ, Mangama G, Bera S, Magudapathy P, Wu CT, Nair KGM, Kamaruddin M, Yu CC, Yang MH, Liu SC, Tyagi AK, Narashiman SV, Chen LC, Chen KH.  2007.  Long-range ferromagnetic ordering at room temperature in Co+ implanted TiO2 nanorods. Nanotechnology. 18:325705.
2006
Dhara*, S, Sundaravel B, Nair KGM, Kesavamoorthy R, Valsakumar MC, Rao CTV, Chen LC, Chen KH.  2006.  Ferromagnetism in cobalt doped n-GaN. Appl. Phys. Lett.. 88:173110-(1-3).
Wang, CH, Shih HC, Tsai YT, Du HY, Chen LC, Chen* KH.  2006.  High methanol oxidation activity of electrocatalysts supported by directly grown nitrogen containing carbon nanotubes on carbon cloth. Electrochimica Acta. 52:1612-1617.
Shi, SC, Chen CF, Chattopadhyay S, Dhara SK, Chen KH, Ke BK, Chen* LC, Trinkler L, Berzina B.  2006.  Luminescence properties of wurtzite AlN nanotips. Appl. Phys. Lett.. 89:163127-(1-3).
Dhara, SK, Magudapathy P, Kesavamoorthy R, Kalavathi S, Nair KGM, Hsu GM, Chen LC, Chen* KH, Santhakumar K, Soga T.  2006.  Nitrogen ion beam synthesis of InN in InP(100) at elevated temperature. Appl. Phys. Lett.. 88:241904-(1-3).
2005
W.Chiou, J, Tsai HM, Pao CW, Dong* CL, Chang CL, Chien FZ, Pong WF, Tsai M-H, Shi SC, Chen CF, Chen LC, Chen KH, Hong I-H, Chen C-H, Lin H-J, Guo JH.  2005.  Comparison of the electronic structures of AlN nanotips grown on p- and n-type Si substrates. J. Phys.: Condens. Matter. 17:7523-7530.
Datta, A, Dhara* S, Muto S, Hsu CW, Wu CT, Shen CH, Tanabe T, Maruyama T, Chen KH, Chen LC, Wang YL.  2005.  Formation and in-situ dynamics of metallic nanoblisters in self-ion-implanted GaN nanowires. Nanotechnology. 16:2764-2769.
S. Dhara, Datta A, Wu CT, Chen* KH, Wang YL, Muto S, Tanabe T, Shen CH, Hsu CW, Chen LC, Maruyama T.  2005.  Mechanism of nanoblister formation in Ga+ self-ion implanted GaN nanowires. Appl. Phys. Lett.. 86:203119-(1-3).
2004
Dhara*, S, Chandra S, Magudapathy P, Kalavathi S, Panigrahi BK, Nair KGM, Sastry VS, Hsu CW, Wu CT, Chen KH, Chen LC.  2004.  Blue luminescence of Au nanoclusters embedded in silica matrix. J. Chem. Phys.. 121:12595-12599.
Dhara, SK, Datta A, Lan ZH, Chen* KH, Wang YL, Shen CS, Chen LC, Hsu CW, Lin HM, Chen CC.  2004.  Blue shift of yellow band in self-ion beam irradiated GaN nanowires. Appl. Phys. Lett.. 84:3486-3488.
Muto*, S, Dhara SK, Datta A, Hsu CW, Wu CT, Shen CH, Chen LC, Chen KH, Wang YL, Tanabe T, Maruyama T, Lin HM, Chen CC.  2004.  Characterization of nanodome on GaN nanowires formed with Ga ion irradiation. Mater. Trans.. 45:435-439.
Hsu, CH, Lo HC, Chen CF, Wu CT, Hwang JH, Das D, Tsai J, Chen LC, Chen* KH.  2004.  Generally applicable self-masked dry etching technique for nanotip arrays formation. Nano Letters. 4:471-475.
Dhara, S, Datta A, Wu CT, Lan ZH, Chen* KH, Wang YL, Hsu CW, Shen CH, Chen LC, Chen CC.  2004.  Hexagonal-to-cubic phase transformation in GaN nanowires by Ga+ implantation. Appl. Phys. Lett.. 84:5473-5475.
Lan, ZH, Dhara SK, Chen* KH, Wu CT, Chen LC, Hsu CW, Chen CC.  2004.  Nanohomojunction (GaN) and nanoheterojunction (InN) nanorods on 1-dimensional GaN nanowire substrates. Adv. Func. Mater.. 14:233-237.