2020
Xiao Zeng, Sudheer Kumar Vanga, Eng Tuan Poh, Yi Shi, Chorng Haur Sow, Andrew Anthony Bettiol, and Xiaogang Liu. Photolithographic fabrication of upconversion barcodes for multiplexed molecular detection. Advanced Optical Materials, 8(22):2001168, NOV 2020.
Prakash Pitchappa, Abhishek Kumar, Haidong Liang, Saurav Prakash, Nan Wang, Andrew A. Bettiol, Thirumalai Venkatesan, Chengkuo Lee, and Ranjan Singh. Frequency-agile temporal terahertz metamaterials. Advanced Optical Materials, 8(12):2000101, JUN 2020.
Jintao Gong, Huining Jin, Chengyuan Yang, Andrew A. Bettiol, and Jeroen A. van Kan. All-silicon subwavelength structural coloration fabricated through proton beam writing and reactive ion etching. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 469:52–56, APR 2020.
2019
Sayantan Sasmal, Shilendra Kumar Sharma, Soumyo Chatterjee, Amlan J. Pal, Shuvan Prashant Turaga, Andrew Anthony Bettiol, Raj Ganesh S. Pala, Sri Sivakumar, and Suresh Valiyaveettil. Gas-induced confinement–deconfinement interplay in organic–inorganic hybrid perovskite thin film results in systematic band modulation. ACS Applied Materials & Interfaces, 11(46):43708–43718, OCT 2019.
Tao Ye, Hong Qi Tan, Zhaohong Mi, Ce-Belle Chen, Vanessa Lam Yuk Man, Thomas Osipowicz, Frank Watt, Soo Kee Chee, and Andrew A. Bettiol. The radiobiology beam line facility at the centre for ion beam applications, national university of singapore. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 456:26 – 31, OCT 2019.
Shuvan Prashant Turaga, Huining Jin, Ee Jin Teo, and Andrew A. Bettiol. Cross-sectional hyperspectral imaging of proton implanted diamond. Applied Physics Letters, 115(2):021904, JUL 2019.
Hong Qi Tan, Zhaohong Mi, Andrew A Bettiol, Thomas Osipowicz, and Frank Watt. A mechanistic approach towards determining double strand breaks and relative biological effectiveness variation along proton tracks. Biomedical Physics & Engineering Express, 5(2):025032, JAN 2019.
Darren CJ Neo, Chengyuan Yang, Yi Shi, Qing Yang Steve Wu, Jie Deng, Yang Xu, Andrew A Bettiol, Yinthai Chan, and Ee Jin Teo. Sub-wavelength plasmonic color tuning of quantum dot emission. ACS Photonics, 6(1):93–98, JAN 2019.
2018
H. D. Liang, M. B. H. Breese, S. Duttagupta, A. G. Aberle, A. A. Bettiol, and T. Venkatesan. The effect of hydrogen doping on the electrochemical etching of ion-irradiated n-type silicon. ECS Journal of Solid State Science and Technology, 7(8):N110–N113, JUL 2018.
Huining Jin, Shuvan Prashant Tugara, Sudheer Kumar Vanga, and Andrew Anthony Bettiol. Single-mode light guiding in diamond waveguides directly written by focused proton beam. Optics Letters, 43(11):2648–2651, JUN 2018.
Usman Younis, Xianshu Luo, Bowei Dong, Li Huang, Sudheer Vanga, Eu-Jin Lim, Guo-Qiang Lo, Chengkuo Lee, Andrew Anthony Bettiol, and Kah-Wee Ang. Towards low-loss waveguides in soi and ge-on-soi for mid-ir sensing. Journal of Physics Communications, 2(4):045029, APR 2018.
Hong Qi Tan, Zhaohong Mi, and Andrew A. Bettiol. Simple and universal model for electronimpact ionization of complex biomolecules. Physical Review E, 97:032403, MAR 2018.
Shawn Yohanes Siew, Eric Jun Hao Cheung, Haidong Liang, Andrew Bettiol, Noriaki Toyoda, Bandar Alshehari, Elhadj Dogheche, and Aaron J. Danner. Ultra-low loss ridge waveguides on lithium niobate via argon ion milling and gas clustered ion beam smoothening. Optics Express, 26(4):4421–4430, FEB 2018.
2017
J. Charles G. Jeynes, Kalotina Geraki, Christopher Jeynes, Mi Zhaohong, Andrew A. Bettiol, Eva Latorre, Lorna Wendy Harries, and Christian Soeller. Nanoscale properties of human telomeres measured with a dual purpose x-ray fluorescence and super resolution microscopy gold nanoparticle probe. ACS Nano, 11(12):12632–12640, NOV 2017.
Kwan Bum Choi, Christopher Subhodayam Percis Teena, Jian Wei Ho, Jianqiang Wang, Jiaji Lin, Andrew A. Bettiol, Armin G. Aberle, and Johnson Wong. Modulated photoluminescence lifetime measurement of bifacial solar cells. Journal of Photovoltaics, 7(6):1687 – 1692, NOV 2017.
M.Q. Ren, X Ji, S.K. Vajandar, Z.H. Mi, A. Hoi, T Walczyk, J.A. van Kan, A.A. Bettiol, F. Watt, and T. Osipowicz. Analytical possibilities of highly focused ion beams in biomedical field. Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 406:15–24, SEP 2017.
Deepa Sriramulu, Shuvan Prashant Turaga, Andrew Anthony Bettiol, and Suresh Valiyaveettil. Molecular organization dependent tuning of optical properties of perylene – silica hybrid nanoparticles. Scientific Reports, 7:7842, AUG 2017.
Miguel Vasco, Luis Alves, Victoria Corregidor, Andrew Bettiol, Frank Watt, and Teresa Pinheiro. 3d map distribution of metallic nanoparticles in whole cells using mev ion microscopy. Journal of Microscopy, 267(2):227–236, AUG 2017.
Deepa Sriramulu, Shuvan Prashant Turaga, Andrew Anthony Bettiol, and Suresh Valiyaveettil. Oriented perylene incorporated optically anisotropic 2d silica films. RSC Advances, 7:32692– 32702, JUN 2017.
Manukumara Manjappa, Shuvan Prashant Turaga, Yogesh Kumar Srivastava, Andrew Anthony Bettiol, and Ranjan Singh. Magnetic annihilation of the dark mode in a strongly coupled bright–dark terahertz metamaterial. Optics Letters, 42(11):2106–2109, JUN 2017.
Chengyuan Yang, Shuvan Prashant Turaga, Andrew A. Bettiol, Pranesh Balamuniappan, Michel Bosman, Hui Ru Tan, Jing Hua Teng, and Ee Jin Teo. Textured v-pit green light emitting diode as a wavelength-selective photodetector for fast phosphor-based white light modulation. ACS Photonics, 4(3):443–448, FEB 2017.
2016
Andrew A. Bettiol, Zhaohong Mi, and Frank Watt. High-resolution fast ion microscopy of single whole biological cells. Applied Physics Reviews, 3(4):041102, DEC 2016.
Deepa Sriramulu, Shuvan Prashant Turaga, Ang Xin Yi, Andrew Anthony Bettiol, and Suresh Valiyaveettil. Synthesis, characterization and application of luminescent silica nanomaterials. Journal of Materials Chemistry C, 4:11190–11197, NOV 2016.
Usman Younis, Andy Eu-Jin Lim, Patrick Guo-Qiang Lo, Andrew A. Bettiol, and Kah-Wee Ang. Propagation loss improvement in ge-on-soi mid-infrared waveguides using rapid thermal annealing. IEEE Photonics Technologies Letters, 28(21):2447–2450, NOV 2016.
Usman Younis, Sudheer K. Vanga, Andy Eu-Jin Lim, Patrick Guo-Qiang Lo, Andrew A. Bettiol, and Kah-Wee Ang. Germanium-on-soi waveguides for mid-infrared wavelengths. Optics Express, 24(11):11987–11993, MAY 2016.
Yuanjun Yan, Daryl Boey, Li Theng Ng, Jan Gruber, Andrew Bettiol, Nitish Thakor, and Chia Hung Chen. Continuous-flow c. elegans fluorescence expression analysis with real-time image processing through microfluidics. Biosensors and Bioelectronics, 77:428–434, MAR 2016.
2015
Chengyuan Yang, Andrew A. Bettiol, Yi Shi, Michel Bosman, Hui Ru Tan, Wei Peng Goh, Jing Hua Teng and Ee Jin Teo, Fast electrical modulation in a plasmonic-enhanced V-pit textured light emitting diode Advanced Optical Materials 3 (12) (2015) 1703-1709
Zhaohong Mi, Yuhai Zhang, Sudheer Kumar Vanga, Ce-Belle Chen, Hong Qi Tan, Frank Watt, Xiaogang Liu and Andrew A. Bettiol, Subwavelength imaging through ion-beam-induced upconversion, Nature Communications 6, Article number: 8832
Ruiyun He, Sudheer Kumar Vanga, Andrew A. Bettiol, Feng Chen, Focused ion-beam writing of channel waveguides in BGO crystal for telecommunication bands, Optical Engineering 54 (5) 057108 (2015)
Yang Tan, Zhen Shang, Sudheer Kumar Vanga, Andrew A. Bettiol, and Feng Chen, High-gain optical waveguide amplifier based on proton beam writing of Nd:YAG crystal Optics Express 23(11):14612, May 2015
Manukumara Manjappa, Sher Yi Chiam, Longqing Cong, Andrew Anthony Bettiol, Weili Zhang and Ranjan Singh, Tailoring the slow light behavior in terahertz metasurfaces, Applied Physics Letters 106 181101 (2015)
Andrew A. Bettiol, Zhaohong Mi, Sudheer Kumar Vanga, Ce-belle Chen, Ye Tao, Frank Watt, Ion beam induced fluorescence imaging in biological systems, Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms B 348 (2015) 131–136
Ye Tao, Zhaohong Mi, Sudheer Kumar Vanga, Ce-Belle Chen, Andrew A Bettiol, and Frank Watt. Variation in the uptake of Nanoparticles by Monolayer Cultured Cells using High Resolution Ion Beam Imaging . Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms B 348 (2015) 143–146
Sudheer Kumar Vanga, Zhaohong Mi, Long Cheng Koh, Ye Tao, Andrew A. Bettiol, and Frank Watt. Development of a new light collection and detection system optimized for ion beam induced fluorescence microscopy. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms B 348 (2015) 111–114
Sudheer Kumar Vanga and A. A. Bettiol. Proton beam writing of dye doped polymer microlasers. Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms B 348 (2015) 209–212
Sudheer Kumar Vanga, Venkatram Nalla and A. A. Bettiol. Polymer microlasers with a suspended cavity design. Optical Materials 42 (2015) 144-147
H. D. Liang, S. K. Vanga, J. F. Wu, B. Q. Xiong, C. Y. Yang, A. A. Bettiol, and M. B. H. Breese. Fabrication of 3d photonic components on bulk crystalline silicon. Optics Express 23(1):121–129, Jan 2015
2014
Ee Jin Teo, Noriaki Toyoda, Chengyuan Yang, Bing Wang, Nan Zhang, Andrew Anthony Bettiol, and Jinghua Teng, Sub-30 nm thick plasmonic films and structures with ultralow loss, Nanoscale 6 (6) (2014) 3243-3249
Yuanjun Yan, Li Fang Ng, Li Theng Ng, Kwan Bum Choi, Jan Gruber, Andrew A. Bettiol and Nitish V. Thakor, A continuous-flow C. elegans sorting system with integrated optical fiber detection and laminar flow switching, Lab on a Chip 14 (2014) 4000-4006
B. del Rosal, C. Sun, Y. Yan, M.D. Mackenzie, C. Lu, A. A. Bettiol, A.K. Kar and D. Jaque, Flow effects in the laser-induced thermal loading of optical traps and optofluidic devices, Optics Express Vol. 22, Issue 20, pp. 23938-23954 (2014)
Qiang An, Chen Cheng, Sudheer Vanga Kumar Andrew Bettiol and Feng Chen, Proton beam writing of chalcogenide glass: A new approach for fabrication of channel waveguides at telecommunication O and C bands, Journal of Lightwave Technology 32 (2014) 3763-3767
Ee Jin Teo, Noriaki Toyoda, Chengyuan Yang, Andrew A. Bettiol and Jing Hua Teng, Nanoscale smoothing of plasmonic films and structures using gas cluster ion beam irradiation, Applied Physics A 117 (2) (2014) 719-723
2013
Xiao Chen, Ce-Belle Chen, Chammika N. B. Udalagama, Minqin Ren, Kah Ee Fong, Lin Yue Lanry Yung, Pastorin Giorgia, Andrew Bettiol and Frank Watt, High-Resolution 3D Imaging and Quantification of Gold Nanoparticles in a Whole Cell Using Scanning Transmission Ion Microscopy, Biophysical Journal 104 (7) (2013) 1419-1425
Vanga Sudheer Kumar, Shuvan Prashant Turaga, Ee Jin Teo, Andrew A. Bettiol, Fabrication of optical microresonators using proton beam writing, Microelectronic Engineering 102 (2013) 33-35
Jun Deng, Sajid Hussain, Vanga Sudheer Kumar, Wei Jia, Ching Eng Png, Lim Soon Thor, Andrew A. Bettiol, and Aaron J. Danner, Modeling and experimental investigations of Fano resonances in free-standing LiNbO3 photonic crystal slabs, Optics Express 21, Issue 3, 3243-3252 (2013)
F. Watt, X. Chen, C. Chen, C. N. B. Udalagama, J. A. van Kan, and A. A. Bettiol, Whole cell structural imaging at 20nm resolutions using MeV ions, Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms 306 (2013) 6-11
C. Udalagama, X. Chen, A. A. Bettiol, and F.Watt, An ion beam analysis software based on imagej, Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms 306 (2013) 59-63
Rattanaporn Norarat, Varpu Marjomki, Xiao Chen, Mi Zhaohong, Ren Minqin, Ce-Belle Chen, Andrew Bettiol, Harry J Whitlow, and Frank Watt, Ion-induced fluorescence imaging of endosomes, Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms 306 (2013) 113-116
A. A. Bettiol, S. P. Turaga, Y. Yan, S. K. Vanga, and S. Y. Chiam, Three-dimensional metamaterials fabricated using proton beam writing, Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms 306 (2013) 271-274
S. K. Vanga and A. A. Bettiol, Proton beam writing of three-dimensional microcavities, Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms 306 (2013) 281-283
Zhiya Dang, Agnieszka Banas, Sara Azimi, Jiao Song, Mark Breese, Yong Yao, Shuvan Prashant Turaga, Gonzalo Recio-Sanchez, Andrew Bettiol and Jeroen Van Kan, Silicon and porous silicon mid-infrared photonic crystals, Applied Physics A 112 (2013) 517-523
Watt, F., X. Chen, C. Ce-Belle, C. Udalagama, M. Ren, G. Pastorin and A. Bettiol, Fast Ion Beam Microscopy of Whole Cells, Cosmos 9 (2013) 1-10
Jianfeng Wu, Binghao Ng, Shuvan P. Turaga, Mark B. H. Breese, Stefan A. Maier, Minghui Hong, Andrew A. Bettiol, and Herbert O. Moser, Free-standing terahertz chiral meta-foils exhibiting strong optical activity and negative refractive index, Applied Physics Letters 103 (2013) 141106
Yicun Yao, Feng Chen, Sudheer Kumar Vanga, A. A. Bettiol, Chao Zhan, Proton or Helium ion beam written channel waveguides in Nd:YAG ceramics, Optical Materials 35 (2013) 2257-2260
Jianfeng Wu, Herbert O. Moser, Su Xu, Linke Jian, Agnieszka Banas, Krzysztof Banas, Hongsheng Chen, Andrew A. Bettiol, and Mark B. H. Breese, Functional multi-band thz meta-foils, Scientific Reports 3 (2013) 3531
2012
Ningning Dong, Yicun Yao, Yuechen Jia, Feng Chen, Sudheer Kumar Vanga, Andrew Anthony Bettiol, Qingming Lu, Buried channel waveguides in KTiOPO4 nonlinear crystal fabricated by focused He+ beam writing, Optical Materials 35 (2012) 184-186
C. Y. Yang, E. J. Teo, T. Goh, S. L. Teo, J. H. Teng and A.A. Bettiol, Metal-assisted photonic mode for ultrasmall bending with long propagation length at visible wavelengths, Optics Express 20 (2012) 23898-23905
S. Azimi, M.B.H. Breese, Z.Y. Dang, Y. Yan, Y.S. Ow and A. A. Bettiol, Fabrication of complex curved three-dimensional silicon microstructures using ion irradiation, Journal of Micromechanics and Microengineering 22 (2012) 015015
S. Homhuan, B. Zhang, F.-S. Sheu, A. A. Bettiol and F. Watt, Single-cell electroporation using proton beam fabricated biochips, Biomedical Microdevices 14 (2012) 533-540
Tian-Cai Liu, Thorsten Wohland, Frank Watt, Andrew Bettiol, Chammika Udalagama and Li-Ping Wang, A new technology for revealing the flow profile in integrated lab-on-a-chip, Medical Physics 39 (2012) 5060-5064
2011
Guangyuan Si, Aaron J. Danner, Siew Lang Teo, Ee Jin Teo, Jinghua Teng, and Andrew A. Bettiol, Photonic crystal waveguides with ultra-high aspect ratio in lithium niobate fabricated by focused ion beam milling, Journal of Vacuum Science and Technology B 29 (2011) 021205
Siew-Kit Hoi, Xiao Chen, Vanga S. Kumar, Sureerat Homhuan, Chorng-Haur Sow and Andrew A. Bettiol, A microfluidic chip with integrated colloidal crystal for online optical analysis, Advanced Functional Materials 21 (2011) 2847-2853
A. Benayas, Ningning Dong, Feng Chen, A. A. Bettiol, D. Jaque, Thermal optimization and erasing of Nd:YAG proton beam written waveguides, Optics Letters 36 (2011) 3278-3280
Yicun Yao, Ningning Dong, Feng Chen, Sudheer Kumar Vanga and Andrew Anthony Bettiol, Proton beam writing of Nd:GGG crystals as new waveguide laser sources, Optics Letters 36 (2011) 4173-4175
Chen Xiao, Chammika NB Udalagama, Chen Ce-Belle, Andrew Bettiol, Daniel Pickard and Frank Watt, Whole cell imaging using fast and slow helium ions, Biophysical Journal 101 (2011) 1788-1793
Yuanjun Yan, M. Ibnur Rashad, Ee Jin Teo, Hendrix Tanoto, Jinghua Teng and Andrew A. Bettiol, Selective electroless silver plating of three dimensional SU-8 microstructures on silicon for metamaterials applications, Optical Materials Express 1 (2011) 1548-1554
J.A. van Kan, P. Malar, Armin Baysic De Vera, Chen Xiao, A.A. Bettiol and F. Watt, Proton beam writing nanoprobe facility design and first test results, Nuclear Instruments and Methods in Physics Research A 645 (2011) 113-115
F. Watt, Xiao Chen, Armin Baysic De Vera, C. N. Udalagama, Ren Minqin, J. A. van Kan, A. A. Bettiol, The Singapore high resolution single cell imaging facility, Nuclear Instruments & Methods in Physics Research B 269 (2011) 2168-2174
Jamie S. Laird, Jamie Wilkinson, Chris Ryan, Andrew Bettiol, Hyperspectral Ionoluminescence System for Minerals and Fluid Inclusions, Nuclear Instruments & Methods in Physics Research B 269 (2011) 2244-2250
E.J. Teo, A.A. Bettiol, B.Q. Xiong, Fabrication of smooth silicon optical devices using proton beam writing, Nuclear Instruments & Methods in Physics Research B 269 (2011) 2448-2451
Chammika Udalagama, E.J. Teo, S.F. Chan, V.S. Kumar, A.A. Bettiol, F. Watt, Proton beam writing of long, arbitrary structures for micro/nano photonics and fluidics applications, Nuclear Instruments & Methods in Physics Research B 269 (2011) 2417-2421