Xu Li

Summary

Affiliation: Northwestern University
Country: USA

Publications

  1. pmc Characterization of malignant brain tumor using elastic light scattering spectroscopy
    Jianmin Gong
    Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
    Dis Markers 25:303-12. 2008
  2. ncbi request reprint Analytical techniques for addressing forward and inverse problems of light scattering by irregularly shaped particles
    Xu Li
    Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Opt Lett 29:1239-41. 2004
  3. ncbi request reprint Modeling low-coherence enhanced backscattering using Monte Carlo simulation
    Hariharan Subramanian
    Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Appl Opt 45:6292-300. 2006
  4. ncbi request reprint Superenhanced backscattering of light by nanoparticles
    Zhigang Chen
    Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Opt Lett 31:196-8. 2006
  5. ncbi request reprint Backscattering enhancement of light by nanoparticles positioned in localized optical intensity peaks
    Zhigang Chen
    Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Appl Opt 45:633-8. 2006
  6. pmc B-scan based acoustic source reconstruction for magnetoacoustic tomography with magnetic induction (MAT-MI)
    Leo Mariappan
    Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    IEEE Trans Biomed Eng 58:713-20. 2011
  7. pmc Comparison study of three different image reconstruction algorithms for MAT-MI
    Rongmin Xia
    Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    IEEE Trans Biomed Eng 57:708-13. 2010
  8. ncbi request reprint Anomalous oscillations in the spectra of light backscattered by inhomogeneous microparticles
    Xu Li
    Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Phys Rev E Stat Nonlin Soft Matter Phys 75:037601. 2007
  9. pmc Multi-excitation magnetoacoustic tomography with magnetic induction for bioimpedance imaging
    Xu Li
    Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    IEEE Trans Med Imaging 29:1759-67. 2010
  10. pmc Optical methodology for detecting histologically unapparent nanoscale consequences of genetic alterations in biological cells
    Hariharan Subramanian
    Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
    Proc Natl Acad Sci U S A 105:20118-23. 2008

Collaborators

Detail Information

Publications32

  1. pmc Characterization of malignant brain tumor using elastic light scattering spectroscopy
    Jianmin Gong
    Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
    Dis Markers 25:303-12. 2008
    ..We also demonstrate that all three classification methods discriminate between tumor and normal tissue and have the potential to identify and quantitatively characterize tumor-infiltrated brain tissues...
  2. ncbi request reprint Analytical techniques for addressing forward and inverse problems of light scattering by irregularly shaped particles
    Xu Li
    Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Opt Lett 29:1239-41. 2004
    ..We also demonstrate that these approaches have the potential to address the inverse-scattering problem by means of a spectral analysis of the total scattering cross section of arbitrarily shaped particles...
  3. ncbi request reprint Modeling low-coherence enhanced backscattering using Monte Carlo simulation
    Hariharan Subramanian
    Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Appl Opt 45:6292-300. 2006
    ..We show that small exit angles are highly sensitive to low-order scattering, which is crucial for accurate modeling of LEBS. Our results show that the predictions of the model are in excellent agreement with the experimental data...
  4. ncbi request reprint Superenhanced backscattering of light by nanoparticles
    Zhigang Chen
    Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Opt Lett 31:196-8. 2006
    ..Potential applications of this phenomenon include visible-light detection, characterization, and manipulation of particles as small as a few nanometers...
  5. ncbi request reprint Backscattering enhancement of light by nanoparticles positioned in localized optical intensity peaks
    Zhigang Chen
    Department of Electrical and Computer Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Appl Opt 45:633-8. 2006
    ..Potential applications include visible-light detection, characterization, and manipulation of nanoparticles...
  6. pmc B-scan based acoustic source reconstruction for magnetoacoustic tomography with magnetic induction (MAT-MI)
    Leo Mariappan
    Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    IEEE Trans Biomed Eng 58:713-20. 2011
    ..We have also conducted phantom experiments to evaluate the proposed method, and the reconstructed image shows a good agreement with the target phantom...
  7. pmc Comparison study of three different image reconstruction algorithms for MAT-MI
    Rongmin Xia
    Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    IEEE Trans Biomed Eng 57:708-13. 2010
    ..The computer simulation results indicate that the potential energy method and vectored pressure method can directly reconstruct the Lorentz force distribution and give a more accurate reconstruction of electrical conductivity...
  8. ncbi request reprint Anomalous oscillations in the spectra of light backscattered by inhomogeneous microparticles
    Xu Li
    Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Phys Rev E Stat Nonlin Soft Matter Phys 75:037601. 2007
    ..We explain this anomalous behavior by examining the path-length distributions of the backscattered photons in the cross polarization...
  9. pmc Multi-excitation magnetoacoustic tomography with magnetic induction for bioimpedance imaging
    Xu Li
    Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    IEEE Trans Med Imaging 29:1759-67. 2010
    ..Benefits that come with this new method include better differentiation of tissue types with conductivity contrast using the MAT-MI approach, specifically for potential breast cancer screening application in the future...
  10. pmc Optical methodology for detecting histologically unapparent nanoscale consequences of genetic alterations in biological cells
    Hariharan Subramanian
    Department of Biomedical Engineering, Northwestern University, Evanston, IL 60208, USA
    Proc Natl Acad Sci U S A 105:20118-23. 2008
    ..These data indicate that this advance in single-cell optics represented by PWS may have significant biomedical applications...
  11. ncbi request reprint Analyzing absorption and scattering spectra of micro-scale structures with spectroscopic optical coherence tomography
    Ji Yi
    Biomedical Engineering Department, Northwestern University, 2145 Sheridan Rd, Evanston IL, 60208 USA
    Opt Express 17:13157-67. 2009
    ..Two different types of microspheres in gel phantom are discriminated based on their distinguished absorbent feature...
  12. ncbi request reprint Estimation of oxygen saturation from erythrocytes by high-resolution spectroscopic optical coherence tomography
    Ji Yi
    Biomedical Engineering Department, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, USA
    Opt Lett 35:2094-6. 2010
    ..The result shows a reliable linear association between the SaO(2) derived from SOCT and the DS measurement, indicating this methodology has potential on in vivo applications to evaluate blood oxygenation...
  13. ncbi request reprint Imaging electrical impedance from acoustic measurements by means of magnetoacoustic tomography with magnetic induction (MAT-MI)
    Xu Li
    Department of Biomedical Engineering, University of Minnesota, Minneapolis 55455, USA
    IEEE Trans Biomed Eng 54:323-30. 2007
    ..The feasibility of MAT-MI in providing high spatial resolution images containing impedance-related information has also been demonstrated in a phantom experiment...
  14. pmc 3D current source density imaging based on the acoustoelectric effect: a simulation study using unipolar pulses
    Renhuan Yang
    Department of Biomedical Engineering, University of Minnesota, Minneapolis, MN 55455, USA
    Phys Med Biol 56:3825-42. 2011
    ..We have shown in computer simulation that using the present method it is feasible to image with high spatial resolution an arbitrary 3D current density distribution in an inhomogeneous conductive media...
  15. pmc Three-dimensional multiexcitation magnetoacoustic tomography with magnetic induction
    Xu Li
    Department of Biomedical Engineering, University of Minnesota, Minnesota 55455, USA
    J Appl Phys 108:124702. 2010
    ....
  16. ncbi request reprint Elastic backscattering spectroscopic microscopy
    Yang Liu
    Department of Biomedical Engineering, Northwestern University, Evanston, Illinois 60208, USA
    Opt Lett 30:2445-7. 2005
    ..We also demonstrate that the spectroscopic data can provide nanoscale structural information beyond what conventional microscopy reveals...
  17. ncbi request reprint Confocal microwave imaging for breast cancer detection: localization of tumors in three dimensions
    Elise C Fear
    University of Calgary, Electrical and Computer Engineering, Canada
    IEEE Trans Biomed Eng 49:812-22. 2002
    ..The influences of the synthetic array size and position relative to the tumor are also explored...
  18. ncbi request reprint Core-corona structure of cubic silsesquioxane-poly(ethylene oxide) in aqueous solution: fluorescence, light scattering, and TEM studies
    K Yi Mya
    Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Republic of Singapore
    J Phys Chem B 109:9455-62. 2005
    ..The long PEO segments act as a spacer between the spherical aggregates, which facilitate the formation of a network-like structure at high concentration...
  19. ncbi request reprint Supramolecular assembled nanostructure containing cubic silsesquioxane in aqueous solution
    Khine Yi Mya
    Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602
    J Nanosci Nanotechnol 6:3955-9. 2006
    ..The size of the drug loaded CSSQ-PEO nanospheres are found to be larger (250-300 nm) than that of the core-corona CSSQ-PEO micellar aggregates (approximatly 180 nm) in dilute aqueous solution...
  20. ncbi request reprint Determination and load of organophosphorus and organochlorine pesticides at water from Jiulong River Estuary, China
    Zhang Zulin
    Key Laboratory of Marine Environmental Science of Ministry of Education, Environmental Science Research Center, Xiamen University, China
    Mar Pollut Bull 45:397-402. 2002
    ..When compared with other areas, the OPs and OCs level in JLRE are some moderate...
  21. ncbi request reprint Analysis of bacterial adhesion using a gradient force analysis method and colloid probe atomic force microscopy
    Xu Li
    Department of Civil and Environmental Engineering, Pennsylvania State University, University Park 16802, USA
    Langmuir 20:8817-22. 2004
    ..These results show that gradient analysis is useful for studying the contribution of the length of the exopolymers on the cell surface to bacterial adhesion to glass surfaces...
  22. ncbi request reprint Characterization of the heptad repeat regions, HR1 and HR2, and design of a fusion core structure model of the spike protein from severe acute respiratory syndrome (SARS) coronavirus
    Yanhui Xu
    Laboratory of Structural Biology, Tsinghua University, Beijing 100084, China
    Biochemistry 43:14064-71. 2004
    ..We also propose an important target site for fusion inhibitor design and several strategies, which have been successfully used in fusion inhibitor design for human immunodeficiency virus (HIV), for the treatment of SARS infection...
  23. ncbi request reprint cDNA cloning, functional expression and antifungal activities of a dimeric plant defensin SPE10 from Pachyrrhizus erosus seeds
    Xiaomin Song
    National Laboratory of Biomacromolecules, Institute of Biophysics, University of Science and Technology of China, Key Laboratory of Structural Biology, Chinese Academy of Sciences, P R China
    Plant Mol Biol 57:13-20. 2005
    ..Several evidence suggested SPE10 should be the first dimeric plant defensin reported so far...
  24. ncbi request reprint Micellization phenomena of biodegradable amphiphilic triblock copolymers consisting of poly(beta-hydroxyalkanoic acid) and poly(ethylene oxide)
    Jun Li
    Institute of Materials Research and Engineering, National University of Singapore, 3 Research Link, Singapore 117602, Singapore
    Langmuir 21:8681-5. 2005
    ....
  25. ncbi request reprint Poly(ester urethane)s consisting of poly[(R)-3-hydroxybutyrate] and poly(ethylene glycol) as candidate biomaterials: characterization and mechanical property study
    Xu Li
    Institute of Materials Research and Engineering IMRE, National University of Singapore, 3 Research Link, Singapore 117602
    Biomacromolecules 6:2740-7. 2005
    ..Young's modulus and the stress at break increased with increasing PHB segment length or PEG segment length, whereas the strain at break increased with increasing PEG segment length or decreasing PHB segment length...
  26. ncbi request reprint Early subfoveal choroidal neovascularization secondary to an accidental stage laser injury
    Zuhua Sun
    Key Laboratory of Ophthalmology of Ministry of Education, and Zhongshan Ophthalmic Center, Sun Yat Sen University, 54 Xianlie Road, Guangzhou, 510060, People s Republic of China
    Graefes Arch Clin Exp Ophthalmol 244:888-90. 2006
    ..To report a case of early subfoveal choroidal neovascularization secondary to an accidental stage laser injury...
  27. ncbi request reprint Synthesis of large-pore methylene-bridged periodic mesoporous organosilicas and its implications
    Xiao Ying Bao
    Department of Chemical and Biomolecular Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119620
    J Phys Chem B 110:2656-61. 2006
    ....
  28. ncbi request reprint Comparative proteomics analysis of light responses in cryptochrome1-304 and Columbia wild-type 4 of Arabidopsis thaliana
    Yuejun Yang
    College of Life Science and Biotechnology, Hunan University, Changsha 410082, China
    Acta Biochim Biophys Sin (Shanghai) 40:27-37. 2008
    ..This assessment was consistent with the known physiological responses of plants to light...
  29. ncbi request reprint Light scattering and luminescence studies on self-aggregation behavior of amphiphilic copolymer micelles
    Jun Hong Yao
    Institute of Materials Research and Engineering, 3 Research Link, Singapore 117602, Singapore
    J Phys Chem B 112:749-55. 2008
    ..The excimer emission was further investigated by time-resolved fluorescence spectroscopy...
  30. ncbi request reprint Use of a fluorescence lifetime imaging microscope in an apoptosis assay of Ewing's sarcoma cells with a vital fluorescent probe
    Xu Li
    Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Nishi ku, Fukuoka 819 0395, Japan
    Anal Biochem 367:219-24. 2007
    ..In this study, the FLIM system was employed to investigate early-stage apoptosis that involves only small morphological changes, suggesting the potential advantage of this method for evaluating small biological effects in living cells...
  31. ncbi request reprint Dynamic and static light scattering studies on self-aggregation behavior of biodegradable amphiphilic poly(ethylene oxide)-poly[(R)-3-hydroxybutyrate]-poly(ethylene oxide) triblock copolymers in aqueous solution
    Xu Li
    Institute of Materials Research and Engineering, National University of Singapore, 3 Research Link, Singapore 117602, Republic of Singapore
    J Phys Chem B 110:5920-6. 2006
    ..The morphology of PEO-PHB-PEO spherical micelles determined by DLS and SLS measurements was further confirmed by TEM...
  32. ncbi request reprint Crystal structures of E. coli laccase CueO at different copper concentrations
    Xu Li
    Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences, University of Science and Technology of China, Hefei, Anhui 230027, People s Republic of China
    Biochem Biophys Res Commun 354:21-6. 2007
    ..In addition, an extra alpha-helix from Leu351 to Gly378 covers substrate biding pocket of CueO and might compromises the electron transfer from substrate to type I copper...