Xiaojing Ren, Chao-Mao Hsieh, Mohammad O. A. Malik, Joshua Su Weiming, and Quan Liu*, “A radio frequency tagging continuous-wave optical spectrometer with megahertz refreshing rate," IEEE Transactions on Instrumentation and Measurement, DOI: 10.1109/TIM.2022.3227992 (2022).link

Chao-Mao Hsieh, Xiaojing Ren, and Quan Liu*, “Feedback based wavefront shaping for weak light with lock-in beat frequency detection”, Optics Letters, 47(19), 5192-5195 (2022).link

Mohammad O. A. Malik, Xiaojing Ren, Chao-Mao Hsieh, Yi Zhang, and Quan Liu*, "Investigation of Equivalence Between Non-Resonant Raman Excitation Spectroscopy and Conventional Raman Spectroscopy,"IEEE Journal of Selected Topics in Quantum Electronics, DOI: 10.1109/JSTQE.2022.3185735 (2022).link

Yi Zhang, Mohammad O. A. Malik, Jian Kang, Clement Yuen, and Quan Liu*, "Sequency encoding single pixel spectroscopy based on Hadamard transform," Optics Express, 30(17), 30121-30134 (2022).link

Xiaojing Ren, Kan Lin, Chao-Mao Hsieh, Linbo Liu, Xin Ge,* and Quan Liu*, "Optical coherence tomography guided confocal Raman spectroscopy for rapid measurements in tissues," Biomedical Optics Express, 13(1), 344-357 (2022).link

Wensong Wang, Shaomeng Wang, Zesheng Zheng, Zhongyuan Fang, Clement Yuen, Quan Liu, Peter Preiser, and Yuanjin Zheng*, "Laser-Induced Surface Acoustic Wave Sensing Based Malaria Parasite Detection and Analysis," IEEE Transactions on Instrumentation and Measurement, DOI: 10.1109/TIM.2021.3124841 (2021). link

Chooi, Wai Hon; Dong, Quanbin; Low, Jeremy Zhi Yan; Yuen, Clement; Chin, Jiah Shin; Lin, Junquan; Liu, Quan; Chew, Sing Yian*, "Cell Membrane-Coated Electrospun Fibers Enhance Keratinocytes Growth Through Cell-Type Specific Interactions," ACS Applied Bio Materials, 4(5),4079-4083 (2021). link

Clement Yuen, Xiaohong Gao, Prem Prakash, Yong Jia Ming, Chalapathy Raja Shobana, Perera Adhikarige Taniya Kaushalya, Luo Yue Mei, Bai Yan Ru, Charles Yang Chun, Peter Preiser, and Quan Liu*, "Towards malaria field diagnosis based on surface-enhanced Raman scattering with on-chip sample preparation and near-analyte nanoparticle synthesis," Sensors & Actuators: B. Chemical, 343, 130162 (2021).link

Yanru Bai, and Quan Liu*, "A modified least-squares method for quantitative analysis in Raman spectroscopy," IEEE Journal of Selected Topics in Quantum Electronics, 27(4), 1-9 (2021) .link

Yi Zhang, Jian Kang, Chao-Mao Hsieh, and Quan Liu*, "Compressive Optical Spectrometry Based on Sequency-Ordered Hadamard Transform," IEEE Photonics Journal, 12(5), 390008, (2020).link

Jian Ju, Chao-Mao Hsieh, Yao Tian, Jian Kang, Ruining Chia, Hao Chang, Yanru Bai, Chenjie Xu, Xiaomeng Wang, and Quan Liu*, "Surface Enhanced Raman Spectroscopy Based Biosensor with a Microneedle Array for Minimally Invasive In Vivo Glucose Measurements," ACS Sensors, 5(6), 1777-1785 (2020).link

Yanru Bai, and Quan Liu*, "Denoising Raman spectra by Wiener estimation with a numerical calibration dataset," Biomedical Optics Express, 11(1), 200-214(2020).link

Joshua Weiming Su, Qiang Wang, Yao Tian, Leigh Madden, David Laurence Becker, and Quan Liu*, "Depth-sensitive Raman spectroscopy for skin wound evaluation in rodents," Biomedical Optics Express, 10(12), 6114-6128 (2019).link

Chao-Mao Hsie, Manish Verma, and Quan Liu*, "Improving depth sensitive fluorescence spectroscopy with wavefront shaping by spectral and spatial filtering," IEEE Access, 7, 170192-170198 (2019).link

Jian Ju, Sagar Regmi, Afu Fu, Sierin Lim and Quan Liu*, "Graphene quantum dot based charge-reversal nanomaterial for nucleus-targeted drug delivery and efficiency controllable photodynamic therapy," Journal of Biophotonics, 12(6), e201800367 (2019).link

Shuo Chen, Lingmin Kong, Wenbin Xu, Xiaoyu Cui*, and Quan Liu*, "A fast fluorescence background suppression method for Raman spectroscopy based on stepwise spectral reconstruction," IEEE Access, 6, 67709-67717 (2018).link

Shuo Huang, Wei Liu, Jing Huang, Xiaochen Wang, Cangjie Yang, Hassan Bohra, Quan Liu*, and Mingfeng Wang*, "Theranostic Colloidal Nanoparticles of Pyrrolopyrrole Cyanine Derivatives for Simultaneous Near-Infrared Fluorescence Cancer Imaging and Photothermal Therapy," ACS Applied Biomaterials, 1(4), 1109-1117 (2018).link

Jian Kang, Xiang Li, and Quan Liu*, "Hadamard transform-based calibration method for programmable optical filters based on digital micro-mirror device," Optics Express, 26, 19563-19573 (2018).link

Yao Tian, Joshua Weiming Su, Jian Ju, and Quan Liu*, "Efficiency enhancement of Raman microspectroscopy at long working distance by parabolic reflector," Biomedical Optics Express, 8(11) 5243-5252 (2017). link

Jian Ju, Wei Liu, Clint Michael Perlaki, Keren Chen, Chunhua Feng and Quan Liu*, "Sustained and Cost Effective Silver Substrate for Surface Enhanced Raman Spectroscopy Based Biosensing," Scientific Reports, 7, 6917 (2017).link

Shuo Chen, Gang Wang, Xiaoyu Cui and Quan Liu*, "A stepwise method based on Wiener estimation for spectral reconstruction in spectroscopic Raman imaging," Optics Express, 25(2), 1005-1018 (2017).link

Wei Liu, Yi Hong Ong, Xiaojun Yu, Jian Ju, Clint Michael Perlaki, Linbo Liu and Quan Liu*, "Snapshot depth-sensitive Raman spectroscopy in layered tissues," Optics Express, 24(25), 28312-28325 (2016).link

Shuo Chen, Caigang Zhu, Christopher Hoe-Kong Chui, Gyanendra Sheoran, Bien-Keem Tan, and Quan Liu*, "Spectral diffuse reflectance and autofluorescence imaging can perform early prediction of blood vessel occlusion in skin flaps", Journal of Biophotonics, In Press (2016).link

Dong Wei, Shuo Chen, Yi Hong Ong, Clint Perlaki and Quan Liu*, "Fast wide-field Raman spectroscopic imaging based on simultaneous multi-channel image acquisition and Wiener estimation," Optics Letters, 41(12), 2783-2786 (2016).link

Caigang Zhu, Shuo Chen, Christopher Hoe-Kong Chui, Bien-Keem Tan and Quan Liu*, "Early detection and differentiation of venous and arterial occlusion in skin flaps using visible diffuse reflectance spectroscopy and autofluorescence spectroscopy," Biomedical Optics Express, 7(2), 570-580 (2016).link

Keren Chen, Clint Perlaki, Aoli Xiong, Peter Preiser, and Quan Liu*, "Review of Surface Enhanced Raman Spectroscopy for Malaria Diagnosis and a New Approach for Detection of Single Parasites in the Ring Stage," IEEE Journal of Selected Topics in Quantum Electronics, 22(4), 6900509 (2016)(Invited Paper).link

Keren Chen, Clement Yuen, Aniweh Yaw, Peter Preiser and Quan Liu*, "Towards ultra-sensitive malaria diagnosis using surface enhanced Raman spectroscopy," Scientific Reports, 6, 20177. (2016).link

Shuo Chen, Yi Hong Ong, and Quan Liu*, "A method to create a universal calibration data set for Raman reconstruction based on Wiener estimation," IEEE Journal of Selected Topics in Quantum Electronics, 22(3), 6800407. (2016).link

Wenfeng Wang, Lee Guan Lim, Supriya Srivastava, Jimmy So Bok Yan, Asim Shabbir and Quan Liu*, "Investigation on the potential of Mueller matrix imaging for digital staining," Journal of Biophotonics, 9(4), 364-375 (2016).link

Alexander W. Jackson, Prashant Chandrasekharan, Jian Shi, Steven P. Rannard, Quan Liu, Chang-Tong Yang and Tao He, "Synthesis and in vivo MRI Evaluation of Biocompatible Branched Copolymer Nano-Contrast Agents," International Journal of Nanomedicine, 10, 5895-5907.(2015).link

Fei Gao, Yi Hong Ong, Gaoming Li, Xiaohua Feng, Quan Liu, and Yuanjin Zheng, "Fast photoacoustic-guided depth-resolved Raman spectroscopy: a feasibility study," Optics Letters, 40(15),3568-3571.(2015).link

Shuo Chen, Yi Hong Ong, Xiaoqian Lin and Quan Liu*, "Optimization of Advanced Wiener Estimation Methods for Raman Reconstruction from Narrow-band Measurements in the Presence of Fluorescence Background," Biomedical Optics Express, 6(7), 2633-2648. (2015).link

Clint Perlaki, Sierin Lim, and Quan Liu*, "Polarized Raman Spectroscopy for Enhanced Quantification of Protein Concentrations in an Aqueous Mixture," Journal of Raman Spectroscopy, 46, 744-749. (2015).link

Shuo Huang, Ravi Kumar Kannadorai, Yuan Chen, Quan Liu*, Mingfeng Wang*, "A narrow-bandgap benzobisthiadiazole derivative with high near-infrared photothermal conversion efficiency and robust photostability for cancer therapy," Chemical Communications, 51, 4223-4226. (2015).link

Malathi Mathiyazhakan, Yuanxiang Yang, Yibo Liu, Caigang Zhu, Quan Liu, Claus Dieter Ohl, Kam Chiu Tam, Yu Gao, Chenjie Xu*, "Non-invasive controlled release from gold nanoparticle integrated photo-responsive liposomes through pulse laser induced microbubble cavitation," Colloids and Surfaces B: Biointerfaces, 126, 569-574. (2015).link

Dong Wei, Shuo Chen and Quan Liu*, "Review of Fluorescence Suppression Techniques in Raman Spectroscopy," Applied Spectroscopy Reviews, 50(5), 387-406. (2015).link

Ravi Kumar Kannadorai, Geraldine Giap Ying Chiew, Kathy Luo Qian and Quan Liu*, "Dual functions of gold nanorods as photothermal agents and autofluorescence enhancer to track cell death during plasmonic photothermal therapy," Cancer Letters, 357(1), 152-159. (2015). link

C. Yuen and Quan Liu*, "Hollow agarose microneedle with silver coating for intradermal surface enhanced Raman measurements: A skin-mimicking phantom study," Journal of Biomedical Optics, 20(6), 061102 (2015).pdf

Shuo Chen, Xiaoqian Lin, Caigang Zhu and Quan Liu*, "Sequential weighted Wiener estimation for extraction of key tissue parameters in color imaging: a phantom study," Journal of Biomedical Optics, 19(12) 127001 (2014).pdf

Yi Hong Ong, Caigang Zhu, and Quan Liu*, "Phantom validation of Monte Carlo modeling for non-contact depth sensitive fluorescence measurements in an epithelial tissue model," Journal of Biomedical Optics, 19(8), 85006 (2014).pdf

Shuo Chen, Xiaoqian Lin, Clement Yuen, Saraswathi Padmanabhan, Roger W. Beuerman, Quan Liu*, "Recovery of Raman spectra with low signal-to-noise ratio using Wiener estimation," Optics Express, 22(10), 12102-12114 (2014). pdf

C. Zhu, Y. H. Ong and Quan Liu*, "Multifocal noncontact color imaging for depth sensitive fluorescence measurements of epithelial cancer," Optics Letters, 39(11), 3250-3253 (2014). pdf

Wenfeng Wang, Lee Guan Lim, Supriya Srivastava, Jimmy So Bok Yan, Asim Shabbir and Quan Liu*, "Roles of linear and circular polarization properties and effect of wavelength choice on differentiation between ex vivo normal and cancerous gastric samples," Journal of Biomedical Optics, 19(4), 046020 (2014). pdf

C. Zhu, S. Chen, C. H. Chui, B. Tan and Quan Liu*, " Early prediction of skin viability using visible diffuse reflectance spectroscopy and autofluorescence spectroscopy," Plastic and Reconstructive Surgery, 134(2):240e-7e (2014).link

C. Perlaki, Quan Liu*, M. Lim, "Raman spectroscopy based techniques in tissue engineering - An overview", Applied Spectroscopy Reviews, 49(7), 513-532 (2014). link

C. Yuen and Quan Liu*, "Towards in vivo intradermal surface enhanced Raman scattering (SERS) measurements: silver coated microneedle based SERS probe," Journal of Biophotonics, 7(9), 683-689 (2014). link

Y. H. Ong, and Quan Liu*, "Fast depth-sensitive fluorescence measurements in turbid media using cone shell configuration," Journal of Biomedical Optics 18, 110503 (2013). pdf

C. Yuen and Quan Liu*, "Optimization of Fe3O4@Ag nanoshells for malaria diagnosis," Analyst 138(21), 6494-6500 (2013). link

Y. H. Ong and Quan Liu*, "Axicon lens-based cone shell configuration for depth-sensitive fluorescence measurements in turbid media," Optics Letters, 38(15), 2647-2649 (2013). pdf

R. K. Kannadorai and Quan Liu*, "Optimization in interstitial plasmonic photothermal therapy for treatment planning," Medical Physics, 40(10), 103301 (2013). pdf

C. Zhu and Quan Liu*, "Review of Monte Carlo modeling of light transport in tissues," Journal of Biomedical Optics, 18(5), 050902 (2013). pdf

S. Chen, Y. H. Ong, and Quan Liu*, "Fast reconstruction of Raman spectra from narrow-band measurements based on Wiener estimation," Journal of Raman Spectroscopy, 44, 875-881. (2013). link

C. Zhu and Quan Liu*, "Numerical investigation of lens based setup for depth sensitive diffuse reflectance measurements in an epithelial cancer model," Optics Express 20(28), 29807-29822 (2012). pdf

Y. H. Ong, Mayasari Lim and Quan Liu*, "Comparison of principal component analysis and biochemical component analysis in Raman spectroscopy for the discrimination of apoptosis and necrosis in K562 leukemia cells: Errata," Optics Express 20(22), 25041-25043 (2012). link

Y. H. Ong, Mayasari Lim and Quan Liu*, "Comparison of principal component analysis and biochemical component analysis in Raman spectroscopy for the discrimination of apoptosis and necrosis in K562 leukemia cells," Opt Express 20(20), 22158-22171 (2012). pdf

S. Chen and Quan Liu*, "Modified Wiener estimation of diffuse reflectance spectra from RGB values by the synthesis of new colors for tissue measurements," Journal of Biomedical Optics 17(3), 030501 (2012). pdf

C. Yuen and Quan Liu*, "Magnetic field enriched surface enhanced resonance Raman spectroscopy for early malaria diagnosis," Journal of Biomedical Optics 17(1), 017005 (2012). pdf

C. Zhu and Quan Liu*, "A hybrid method for fast Monte Carlo simulation of diffuse reflectance from a multi-layered tissue model with tumor-like heterogeneities," Journal of Biomedical Optics 17(1), 010501 (2012). pdf

C. Zhu and Quan Liu*, "Validity of the semi-infinite tumor model in diffuse reflectance spectroscopy for epithelial cancer diagnosis: a Monte Carlo study," Optics Express 19(18), 17799-17812 (2011). pdf

Quan Liu*, G. Grant , J. Li , Y. Zhang , F. Hu , S. Li , C. Wilson , K. Chen, D. Bigner and T. Vo-Dinh, "Compact point-detection fluorescence spectroscopy system for quantifying intrinsic fluorescence redox ratio in brain cancer diagnostics," Journal of Biomedical Optics 16(3), 037004, (2011). pdf

Quan Liu*, "Role of optical spectroscopy using endogenous contrasts in clinical cancer diagnosis," World Journal of Clinical Oncology, 2(1), 50-63, (2011). pdf

Quan Liu*, and T. Vo-Dinh, "Investigation of synchronous fluorescence method in multi-component analysis in tissue," IEEE Journal of Selected Topics in Quantum Electronics, 16(4), 927-940, (2010). link

Quan Liu*, G. Grant and T. Vo-Dinh, "Spectral filtering modulation method for estimation of hemoglobin concentration and oxygenation based on a single fluorescence emission spectrum in tissue phantoms," Medical Physics, 36(10), 4819-4829, (2009). pdf

Quan Liu*, S. Norton and T. Vo-Dinh, "Modeling of non-phase mechanisms in ultrasonic modulation of light propagation," Applied Optics, 47(20), 3619-3630, (2008). pdf

Quan Liu*, K. Chen, M. Martin, A. Wintenberg, R. Lenarduzzi, M. Panjehpour, B. Overholt, and T. Vo-Dinh, "Development of a synchronous fluorescence imaging system and data analysis methods," Optics Express, 15(20), 12583-12594 (2007). pdf

Quan Liu* and N. Ramanujam, "Scaling method for fast Monte Carlo simulation of diffuse reflectance spectra from multi-layered turbid media," Journal of the Optical Society of America A, 24(4), 1011-1025 (2007). pdf

Quan Liu*, and N. Ramanujam, "Sequential estimation of optical properties of a two-layered epithelial tissue model from depth-resolved ultraviolet-visible diffuse reflectance spectra," Applied Optics, 45(19), 4776-4790 (2006). pdf

M. C. Skala, G. M. Palmer, C. Zhu, Quan Liu*, K. M. Vrotsos, C. L. Marshek-Stone, A. Gendron-Fitzpatrick, and N. Ramanujam, "Investigation of fiber-optic probe designs for optical spectroscopic diagnosis of epithelial pre-cancers," Lasers in Surgery and Medicine 34(1), 25-38 (2004). link

Quan Liu*, and N. Ramanujam, "Experimental proof of the feasibility of using an angled fiber-optic probe for depth-sensitive fluorescence spectroscopy of turbid media," Optics Letters 29(17), 2034-2036 (2004). pdf

Quan Liu*, C. Zhu, and N. Ramanujam, "Experimental validation of Monte Carlo modeling of fluorescence in tissues in the UV-visible spectrum," Journal of Biomedical Optics 8(2), 223-236 (2003). pdf

C. Zhu, Quan Liu*, and N. Ramanujam, "Effect of fiber optic probe geometry on depth-resolved fluorescence measurements from epithelial tissues: a Monte Carlo simulation," Journal of Biomedical Optics 8(2), 237-247 (2003). pdf

Quan Liu*, and N. Ramanujam, "Relationship between depth of a target in a turbid medium and fluorescence measured by a variable-aperture method," Optics Letters 27(2), 104-106 (2002). pdf

Quan Liu*, and Z. Fu, "An image analysis system for plant chromosomes," Computer Engineering & Applications (in Chinese) 36(3), 71-74 (2000) (published by China Computer Federation and Chinese Institute of Electronics).

Keren Chen, Yi Hong Ong, Clement Yuen, Quan Liu*, "Surface-Enhanced Raman Spectroscopy for Intradermal Measurements," in Imaging in Dermatology, edited by Michael R Hamblin and Pinar Avci, Elsevier (2016) (ISBN: 978-0-12-802838-4), 141-154.link