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Houtong Chen

Houtong Chen

Email
Phone (505) 665-7365

Capabilities

  • Computational Physics and Applied Mathematics
  • Numerical modeling
  • Materials
  • Materials by design
  • Functional materials
  • Microfabrication
  • Nanotechnology
  • Optics and fiber optics
  • Ultrafast optical spectroscopies
  • Terahertz spectroscopies
  • Nanoscale (in time and space) spectroscopies
  • Science of Signatures - Remote and Standoff Sensing
  • Electromagnetics
  • Terahertz imaging systems
  • CINT
  • Fabrication
  • Function/Response Measurements
  • Prediction: theory, modeling and computational techniques

Expertise

Terahertz science and technology

Electromagnetic metamaterials and metasurfaces

Near-field microscopy

Nanophotonics

Ultrafast spectroscopy

 

Education

Ph.D., 2004, Physics, Rensselaer Polytechnic Institute

M.S., 2000, Physics, University of Science & Technology of China

B.S., 1997, Physics, University of Science & Technology of China

 

Professional Appointments

07/2015 - present, Technical Staff Member (Scientist 4), Los Alamos National Laboratory

06/2011 - 07/2015, Technical Staff Member (Scientist 3), Los Alamos National Laboratory

06/2008 - 06/2011, Technical Staff Member (Scientist 2), Los Alamos National Laboratory

05/2005 - 05/2008, Postdoc, Los Alamos National Laboratory, with Drs. Richard Averitt & Toni Taylor

 

Professional Societies

Fellow of the American Physical Society (APS)

Fellow of the Optical Society of America (OSA)

Member of Materials Research Society (MRS)

Topical Editor of Optics Letters

 

Awards

Outstanding Reviewer, Light: Science & Applications, 2017

Fellow, Optical Society (OSA), 2017

LANL Fellows' Prize for Outstanding Research, 2015

Fellow, American Physical Society (APS), 2015

LAAP Achievement Award, LANL, 2007, 2013 & 2016

Postdoctoral Publication Prize Honorable Mention, LANL, 2007

Guanghua Scholarship, USTC, 1999

 

Patents

07/2018, "Reflective metasurfaces for broadband terahertz linear-to-circular polariation conversion," U.S. Provisional Patent Application No. 62/694,328

09/2014 “Dynamical frequency tuning of electric and magnetic metamaterial response,” US Patent No. 8,836.439

11/2010 “Active terahertz metamaterial devices,” US Patent No. 7,826,504

 

Publications

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85. W. Xu, L. Xie, J. Zhu, L. Tang, R. Singh, C. Wang, Y. Ma, H.-T. Chen, Y. Ying, “Terahertz biosensing with a graphene-metamaterial heterostructure platform,” Carbon 141, 247–252 (2019).

84. X. Wang, J. Jian, Z. Zhou, C. Fan, Y. Dai, L. Li, J. Huang, J. Sun, A. Donohue, P. Bermel, X. Zhang, H.-T. Chen, and H. Wang, "Self-assembled Ag-TiN hybrid plasmonic metamaterial: Tailorable tilted nanopillars and optical properties,” Advanced Optical Materials, accepted (2018).

83. C.-C. Chang, W. J. M. Kort-Kamp, J. Nogan, T. S. Luk, A. K. Azad, A. J. Taylor, D. A. R. Dalvit, M. Sykora, and H.-T. Chen, “High-temperature refractory metasurfaces for solar thermophotovoltaic energy harvesting,” Nano Letters 18(12) 7665–7673 (2018). 

82. B. Zeng, Z. Huang, A. Singh, Y. Yao, A. K. Azad, A. D. Mohite, A. J. Taylor, D. R. Smith, and H.-T. Chen,“Graphene metasurface devices for high-speed mid-infrared spatial light modulation and imaging,” Light: Science & Applications 7, 51 (2018).

81. J. Huang, T. Jin, S. Misra, H. Wang, Z. Qi, Y. Dai, X. Sun, L. Li, J. Okkema, H.‐T. Chen, P.‐T. Lin, X. Zhang, H. Wang, “Tailorable optical response of Au-LiNbO3 hybrid metamaterial thin films for optical waveguide applications,” Advanced Optical Materials 6(19), 1800510 (2018). 

80. J. Huang, X. Wang, N. L. Hogan, S. Wu, P. Lu, Z. Fan, Y. Dai, B. Zeng, R. Starko-Bowes, J. Jian, H. Wang, L. Li, R. P. Prasankumar, D. Yarotski, M. Sheldon, H.-T. Chen, Z. Jacob, X. Zhang, and H. Wang, “Nanoscale artificial plasmonic lattice in self-assembled vertically aligned nitride-metal hybrid metamaterials,” Advanced Science 5(7), 1800416 (2018).

79. C.-C. Chang, L. Huang, J. Nogan, and H.-T. Chen, “Narrowband terahertz bandpass filters employing stacked bilayer metasurface antireflection structures,” APL Photonics 3(5), 051602 (2018).

78. C. Kadlec, V. Skoromets, F. Kadlec, H. Němec, H.-T. Chen, V. Jurka, K. Hruška, and P. Kužel, “Electric-field tuning of a planar terahertz metamaterial based on strained SrTiO3,” Journal of Physics D: Applied Physics 51(5), 054001 (2018).

77. N. Karl, M. S. Heimbeck, H. O. Everitt, H.-T. Chen, A. J. Taylor, I. Brener, A. Benz, J. L. Reno, R. Mendis, and D. M. Mittleman, “Characterization of an active metasurface using terahertz ellipsometry,” Applied Physics Letters 111(19), 191101 (2017).

76. C. Li, C.-C. Chang, Q. Zhou, C. Zhang, and H.-T. Chen, “Resonance coupling and polarization conversion in terahertz metasurfaces with twisted split-ring resonator pairs,” Optics Express 25(21), 25842–25852 (2017).

75. W. Li, Q. He, L. Wang, H. Zeng, J. Bowlan, L. Ling, D. A. Yarotski, W. Zhang, R. Zhao, J. Dai, J. Gu, S. Shen, H. Guo, L. Pi, H. Wang, Y. Wang, I. A. Velasco-Davalos, Y. Wu, Z. Hu, B. Chen, R.-W. Li, Y. Sun, K. Jin, Y. Zhang, H.-T. Chen, S. Ju, A. Ruediger, D. Shi, A. Y. Borisevich, and H. Yang, “Manipulating multiple order parameters via oxygen vacancies: The case of Eu0.5Ba0.5TiO3-d,” Physical Review B 96(11), 115105 (2017).

74. L. Huang, C.-C. Chang, B. Zeng, J. Nogan, S.-N. Luo, A. J. Taylor, A. K. Azad, and H.-T. Chen, “Bilayer metasurfaces for dual and broadband optical antireflection,” ACS Photonics 4(9), 2111–2116 (2017).

73. G. R. Keiser, N. Karl, C. Tulloss, H. T. Chen, A. J. Taylor, I. Brener, A. Benz, J. L. Reno, and D. M. Mittleman, “Nonlinear terahertz metamaterials with active electrical control,” Applied Physics Letters 111(12), 121101 (2017).

72. Z. Liu, Z. Li, Z. Liu, H. Cheng, W. Liu, C. Tang, C. Gu, J. Li, H.-T. Chen, S. Chen, and J. Tian, “Single-layer plasmonic metasurface half-wave plates with wavelength-independent polarization conversion angle,” ACS Photonics 4(8), 2061–2069 (2017).

71. A. K. Azad, A. V. Efimov, S. Ghosh, J. Singleton, A. J. Taylor, and H.-T. Chen, “Ultra-thin metasurface microwave flat lens for broadband applications,” Applied Physics Letters 110(22), 224101 (2017).

70. C.-C. Chang, D. Headland, D. Abbott, W. Withayachumnankul, and H.-T. Chen, “Demonstration of a highly efficient terahertz flat lens employing tri-layer metasurfaces,” Optics Letters 42(9), 1867–1870 (2017).

69. S.-Z. Lin and H.-T. Chen, “Intrinsic left-handed electromagnetic properties in anisotropic superconductors,” Applied Physics Letters 110(17), 172602 (2017).

68. I.-S. Yu, H.-E. Cheng, C.-C. Chang, Y.-W. Lin, H.-T. Chen, Y.-C. Wang, and Z.-P. Yang, “Substrateinsensitive atomic layer deposition of plasmonic titanium nitride films,” Optical Materials Express 7(3), 777–784 (2017).

67. H.-T. Chen, A. J. Taylor, and N. Yu, “A review of metasurfaces: physics and applications,” Reports on Progress in Physics 79(7), 076401 (2016). 

66. L. Huang, B. Zeng, C.-C. Chang, and H.-T. Chen, “Terahertz antireflection coating enabled by a subwavelength metallic mesh capped with a thin dielectric film,” Terahertz Science and Technology 9(1), 1–9 (2016).

65. Azad, A. K., W. J. M. Kort-Kamp, M. Sykora, N. R. Weisse-Bernstein, T. S. Luk, A. J. Taylor, D. A. R. Dalvit, and H.-T. Chen, “Metasurface broadband solar absorber,” Scientific Reports 6, 20347 (2016).

64. Y. Zhang, T. Li, Q. Chen, H. Zhang, J. F. O’Hara, E. Abele, A. J. Taylor, H.-T. Chen, and A. K. Azad, “Independently tunable dual-band perfect absorber based on graphene at mid-infrared frequencies,” Scientific Reports 5, 18463 (2015).

63. L. Liang, M. Qi, J. Yang, X. Shen, J. Zhai, W. Xu, B. Jin, W. Liu, Y. Feng, C. Zhang, H. Lu, H.-T. Chen, L. Kang, W. Xu, J. Chen, T. J. Cui, P. Wu, and S. Liu, “Anomalous terahertz reflection and scattering by flexible and conformal coding metamaterials,” Advanced Optical Materials 3(10), 1374–1380 (2015).

62. J. Li, S. Chen, H. Yang, J. Li, P. Yu, H. Cheng, C. Gu, H.-T. Chen, and J. Tian, “Simultaneous control of light polarization and phase distributions using plasmonic metasurfaces,” Advanced Functional Materials 25(5), 704–710 (2015).

61. H.-T. Chen, “Semiconductor activated terahertz metamaterials,” Frontiers of Optoelectronics 8(1), 27–43 (2015).

60. B. Zhang, J. Hendrickson, N. N. Esfahani, H.-T. Chen, and J. Guo, “Metasurface optical antireflection coating,” Applied Physics Letters 105(24), 241113 (2014).

59. J. E. Heyes, W. Withayachumnankul, N. K. Grady, D. Roy Chowdhury, A. K. Azad, and H.-T. Chen, “Hybrid metasurface for ultra-broadband terahertz modulation,” Applied Physics Letters 105(18), 181108 (2014).

58. N. Karl, K. Reichel, H.-T. Chen, A. J. Taylor, I. Brener, A. Benz, J. L. Reno, R. Mendis, and D. M. Mittleman, “An electrically driven terahertz metamaterial diffractive modulator with more than 20 dB of dynamic range,” Applied Physics Letters 104(9), 091115 (2014).

57. N. K. Grady, B. G. Perkins Jr., H. Y. Hwang, N. C. Brandt, D. Torchinsky, R. Singh, L. Yan, D. Trugman, S. A. Trugman, Q. X. Jia, A. J. Taylor, K. A. Nelson, and H.-T. Chen, “Nonlinear hightemperature superconducting terahertz metamaterials,” New Journal of Physics 15, 105016 (2013).

56. R. Singh, D. Roy Chowdhury, J. Xiong, H. Yang, A. K. Azad, A. J. Taylor, Q. X. Jia, and H.-T. Chen, “Influence of film thickness in THz active metamaterial devices: A comparison between superconductor and metal split-ring resonators,” Applied Physics Letters 103(6), 061117 (2013).

55. N. K. Grady, J. E. Heyes, D. Roy Chowdhury, Y. Zeng, M. T. Reiten, A. K. Azad, A. J. Taylor, D. A. R. Dalvit, and H.-T. Chen, “Terahertz metamaterials for linear polarization conversion and anomalous refraction,” Science 340(6138), 1304–1307 (2013).

54. T. S. Luk, I. Kim, S. Campione, S. W. Howell, G. S. Subramania, R. K. Grubbs, I. Brener, H.-T. Chen, S. Fan, and M. B. Sinclair, “Near-infrared surface plasmon polariton dispersion control with hyperbolic metamaterials,” Optics Express 21(9), 11107–11114 (2013).

53. L. Huang and H.-T. Chen, “A Brief review on terahertz metamaterial perfect absorbers,” International Jounal of Terahertz Science and Technology 6(1), 26–39 (2013).

52. Y. Zeng, H.-T. Chen, and D. A. R. Dalvit, “The role of magnetic dipoles and non-zero-order Bragg waves in metamaterial perfect absorbers,” Optics Express 21(3), 3540–3546 (2013).

51. A. K. Azad, J. F. O’Hara, R. Singh, H.-T. Chen, and A. J. Taylor, “A review of terahertz plasmonics in subwavelength holes on conducting films,” IEEE Journal of Selected Topics in Quantum Electronics 19(1), 8400416 (2013).

50. B. S. Alexandrov, M. L. Phipps, L. B. Alexandrov, L. G. Booshehri, A. Erat, J. Zabolotny, C. H. Mielke, H.-T. Chen, G. Rodriguez, K. Ø. Rasmussen, J. S. Martinez, A. R. Bishop and A. Usheva, “Specificity and heterogeneity of terahertz radiation effect on gene expression in mouse mesenchymal stem cells,” Scientific Reports 3, 1184 (2013).

49. D. Roy Chowdhury, R. Singh, A. J. Taylor, H.-T. Chen, and A. K. Azad, “Ultrafast manipulation of near field coupling between bright and dark modes in terahertz metamaterial,” Applied Physics Letters 102(1), 011122 (2013).

48. J. Q. Gu, R. Singh, X. J. Liu, X. Q. Zhang, Y. F. Ma, S. Zhang, S. A. Maier, Z. Tian, A. K. Azad, H.-T. Chen, A. J. Taylor, J. G. Han, and W. L. Zhang, “Active control of electromagnetically induced transparency analogue in terahertz metamaterials,” Nature Communications 3, 1151 (2012).

47. L. Huang, D. Roy Chowdhury, S. Ramani, M. T. Reiten, S.-N. Luo, A. K. Azad, A. J. Taylor, and H.-T. Chen, “Impact of resonator geometry and its coupling with ground plane on ultrathin metamaterial perfect absorbers,” Applied Physics Letters 101(10), 101102 (2012).

46. J. F. Zhou, D. Roy Chowdhury, R. Zhao, A. K. Azad, H.-T. Chen, C. M. Soukoulis, A. J. Taylor, and J. F. O’Hara, “Terahertz chiral metamaterials with giant and dynamically tunable optical activity,” Physical Review B 86(3), 035448 (2012).

45. S. Zhang, J. F. Zhou, Y.-S. Park, J. Rho, R. Singh, S. Nam, A. K. Azad, H.-T. Chen, X. B. Yin, A. J. Taylor, and X. Zhang, “Photoinduced handedness switching in terahertz chiral meta-molecules,” Nature Communications 3, 942 (2012).

44. R. Singh, J. Xiong, A. K. Azad, H. Yang, S. A. Trugman, Q. X. Jia, A. J. Taylor, and H.-T. Chen, “Optical tuning and ultrafast dynamics of high-temperature superconducting terahertz metamaterials,” Nanophotonics 1(1), 117–123 (2012).

43. D. Roy Chowdhury, R. Singh, A. J. Taylor, H.-T. Chen, W. Zhang, and A. K. Azad, “Coupling schemes in terahertz planar metamaterials,” International Journal of Optics 2012, 148985 (2012).

42. H.-T. Chen, “Interference theory of metamaterial perfect absorbers,” Optics Express 20(7), 7165–7172 (2012).

41. W. Han, L. Huang, Q. An, H.-T. Chen, S.-N. Luo, “Crystallization of liquid Cu nanodroplets on single crystal Cu substrates prefers closest-packed planes regardless of the substrate orientations,” Journal of Crystal Growth 345(1), 34–38 (2012).

40. L. Huang, D. Roy Chowdhury, S. Ramani, M. T. Reiten, S.-N. Luo, A. J. Taylor, and H.-T. Chen, “Experimental demonstration of terahertz metamaterial absorbers with a broad and flat high absorption band,” Optics Letters 37(2), 154–156 (2012).

39. J. Zhou, H.-T. Chen, T. Koschny, A. K. Azad, A. J. Taylor, C. M. Soukoulis, and J. F. O’Hara, “Application of metasurface description for multilayered metamaterials and an alternative theory for metamaterial perfect absorber,” arXiv:1111.0343v1 (2011).

38. D. Roy Chowdhury, R. Singh, J. F. O’Hara, H.-T. Chen, A. J. Taylor, and A. K. Azad, “Dynamically reconfigurable terahertz metamaterial through photo-doped semiconductor,” Applied Physics Letters 99(23), 231101 (2011).

37. B. S. Alexandrov, K. Ø. Rasmussen, A. R. Bishop, A. Usheva, L. B. Alexandrov, S. Chong, Y. Dagon, L. G. Booshehri, C. H. Mielke, M. L. Phipps, J. S. Martinez, H.-T. Chen, and G. Rodriguez, “Nonthermal effects of terahertz radiation on gene expression in mouse stem cells,” Biomedical Optics Express 2(9), 2679–2689 (2011).

36. D. Roy Chowdhury, R. Singh, M. Reiten, H.-T. Chen, A. J. Taylor, J. F. O’Hara and A. K. Azad, “A broadband planar terahertz metamaterial with nested structure,” Optics Express 19(17), 15817–15823 (2011).

35. H.-T. Chen, J. F. O’Hara, A. K. Azad, and A. J. Taylor, “Manipulation of terahertz radiation using metamaterials,” Laser & Photonics Reviews 5(4), 513–533 (2011).

34. R. Singh, A. K. Azad, Q. X. Jia, A. J. Taylor, and H.-T. Chen, “Thermal tunability in terahertz metamaterials fabricated on strontium titanate single-crystal substrates,” Optics Letters 36(7), 1230–1232 (2011).

33. J. Bock, Y. Fukuyo, S. Kang, M. L. Phipps, L. B. Alexandrov, K. Ø. Rasmussen, A. R. Bishop, E. D. Rosen, J. S. Martinez, H.-T. Chen, G. Rodriguez, B. S. Alexandrov, and A. Usheva, “Mammalian stem cells reprogramming in response to terahertz radiation,” PLoS ONE 5, e15806 (2010).

32. P. Xu, S.-H. Jeon, H.-T. Chen, H. M. Luo, G. F. Zou, Q. X. Jia, M. Anghel, C. Teuscher, D. J. Williams, B. Zhang, X. J. Han, and H.-L. Wang, “Facile synthesis and electrical properties of silver wires through chemical reduction by polyaniline,” The Journal of Physical Chemistry C 114(50), 22147–22154 (2010).

31. H.-T. Chen, H. Yang, R. Singh, J. F. O’Hara, A. K. Azad, S. A. Trugman, Q. X. Jia, A. J. Taylor, “Tuning the resonance in high temperature superconducting terahertz metamaterials,” Physical Review Letters 105(24), 247402 (2010).

30. J. Q. Gu, R. Singh, Z. Tian, W. Cao, Q. R. Xing, M. X. He, J. W. Zhang, J. G. Han, H.-T. Chen, and W. L. Zhang, “Terahertz superconductor metamaterial,” Applied Physics Letters 97(7), 071102 (2010).

29. H.-T. Chen, J. F. Zhou, J. F. O’Hara, F. Chen, A. K. Azad, and A. J. Taylor, “Antireflection coating using metamaterials and identification of its mechanism,” Physical Review Letters 105(7), 073901 (2010). “Erratum: Antireflection coating using metamaterials and identification of its mechanism [Phys. Rev. Lett. 105, 073901 (2010)],” Physical Review Letters 106(7), 079902 (2011).

28. H.-T. Chen, J. F. Zhou, J. F. O’Hara, and A. J. Taylor, “A numerical investigation of metamaterial antireflection coatings,” Terahertz Science and Technology 3(2), 66–73 (2010).

27. H.-T. Chen, J. F. O’Hara, and A. J. Taylor, “Active Terahertz Metamaterials,” Optics and Spectroscopy 108(6), 834–840 (2010).

26. X. G. Peralta, I. Brener, W. J. Padilla, E. W. Young, A. J. Hoffman, M. J. Cich, R. D. Averitt, M. C. Wanke, J. B. Wright, H.-T. Chen, J. F. O’Hara, A. J. Taylor, J. Waldman, W. D. Goodhue, J. Li, J. Reno, “External modulators for terahertz quantum cascade lasers based on electrically-driven active metamaterials,” Metamaterials 4(2-3), 83–88 (2010). https://www.sciencedirect.com/science/article/pii/S1873198810000162

25. A. K. Azad, H.-T. Chen, S. R. Kasarla, A. J. Taylor, J. F. O’Hara, Z. Tian, X. C. Lu, W. L. Zhang, H. Lu, and A. C. Gossard, “Ultrafast optical control of terahertz surface plasmons in subwavelength hole-arrays at room temperature,” Applied Physics Letters 95(1), 011105 (2009). https://aip.scitation.org/doi/full/10.1063/1.3168510

24. W. L. Chan, H.-T. Chen, A. J. Taylor, I. Brener, M. J. Cich, and D. M. Mittleman, “A spatial light modulator for terahertz beams,” Applied Physics Letters 94(21), 213511 (2009). https://aip.scitation.org/doi/full/10.1063/1.3147221

23. A. K. Azad, H.-T. Chen, X. C. Lu, J. Q. Gu, N. R. Weisse-Bernstein, E. Akhadov, A. J. Taylor, W. L. Zhang, J. F. O’Hara, “Flexible quasi-three-dimensional terahertz electric metamaterials,” Terahertz Science and Technology 2(1), 15–22 (2009).

22. H.-T. Chen, W. J. Padilla, M. J. Cich, A. K. Azad, R. D. Averitt, and A. J. Taylor, “A metamaterial solid-state terahertz phase modulator,” Nature Photonics 3(3), 148–151 (2009).

21. X. G. Peralta, E. Smirnova, A. K. Azad, H.-T. Chen, A. J. Taylor, I. Brener, and J. F. O’Hara, “Metamaterials for THz polarimetric devices,” Optics Express 17(2), 773–783 (2009).

20. G. P. Acuna, S. F. Heucke, F. Kuchler, H.-T. Chen, A. J. Taylor, and R. Kersting, “Surface plasmons in terahertz metamaterials,” Optics Express 16(23), 18745–18751 (2008).

19. H.-T. Chen, S. Palit, T. Tyler, C. M. Bingham, J. M. O. Zide, J. F. O’Hara, D. R. Smith, A. C. Gossard, R. D. Averitt, W. J. Padilla, N. M. Jokerst, and A. J. Taylor, “Hybrid metamaterials enable fast electrical modulation of freely propagating terahertz waves,” Applied Physics Letters 93(9), 091117 (2008).

18. H.-T. Chen, H. Lu, A. K. Azad, R. D. Averitt, A. C. Gossard, S. A. Trugman, J. F. O’Hara, and A. J. Taylor, “Electronic control of extraordinary terahertz transmission through subwavelength metal hole arrays,” Optics Express 16(11), 7641–7648 (2008).

17. H.-T. Chen, J. F. O’Hara, A. K. Azad, A. J. Taylor, R. D. Averitt, D. B. Shrekenhamer, and W. J. Padilla, “Experimental demonstration of frequency agile terahertz metamaterials,” Nature Photonics 2(5), 295–298 (2008).

16. H.-T. Chen, W. J. Padilla, R. D. Averitt, A. C. Gossard, C. Highstrete, M. Lee, J. F. O’Hara, and A. J. Taylor, “Electromagnetic metamaterials for terahertz applications,” Terahertz Science and Technology 1(1), 42–50 (2008).

15. J. F. O’Hara, A. K. Azad, H.-T. Chen, A. J. Taylor, and E. Smirnova, “Effects of microstructure variations on macroscopic terahertz metafilm properties,” Active and Passive Electronic Components 2007, 49691(2007).

14. H.-T. Chen, W. J. Padilla, J. M. O. Zide, S. R. Bank, A. C. Gossard, A. J. Taylor, and R. D. Averitt, “Ultrafast optical switching of terahertz metamaterials fabricated on ErAs/GaAs nanoisland superlattices,” Optics Letters 32(12), 1620–1622 (2007). 

13. J. F. O’Hara, E. Smirnova, H.-T. Chen, A. J. Taylor, R. D. Averitt, C. Highstrete, M. Lee, and W. J. Padilla, “Properties of planar electric metamaterials for novel terahertz applications,” Journal of Nanoelectronics and Optoelectronics 2(1), 90–95 (2007). 

12. H.-T. Chen, J. F. O’Hara, A. J. Taylor, R. D. Averitt, C. Highstrete, M. Lee, and W. J. Padilla, “Complementary planar terahertz metamaterials,” Optics Express 15(3), 1084–1095 (2007).

11. H.-T. Chen, W. J. Padilla, J. M. O. Zide, A. C. Gossard, A. J. Taylor, and R. D. Averitt, “Active terahertz metamaterial devices,” Nature 444(7119), 597–600 (2006). 

10. F. Buersgens, R. Kersting, and H.-T. Chen, “Terahertz microscopy of charge carriers in semiconductors,”Applied Physics Letters 88(11), 112115 (2006). 

9. G. C. Cho, H.-T. Chen, S. Kraatz, N. Karpowicz, and R. Kersting, “Apertureless terahertz near-field microscopy,” Semiconductor Science and Technology 20(7), S286–S292 (2005). 

8. R. Kersting, H.-T. Chen, N. Karpowicz, and G. C. Cho, “Terahertz microscopy with submicrometer resolution,” Journal of Optics A: Pure and Applied Optics 7(2), S184–S189 (2005). 

7. H.-T. Chen, S. Kraatz, R. Kersting, and G. C. Cho, “Identification of a resonant imaging process in apertureless near-field microscopy,” Physical Review Letters 93(26), 267401 (2004). 

6. H.-T. Chen, G. C. Cho, and R. Kersting, “Terahertz imaging with nanometer resolution,” Applied Physics Letters 83(15), 3009–3011 (2003). 

5. W. W. Zhang, W. P. Zhang, P. B. Xie, M. Yin, H.-T. Chen, L. Jing, Y.-S. Zhang, L.-R. Lou, and S.-D. Xia, “Optical properties of nanocrystalline Y2O3:Eu depending on the odd structure,” Journal of Colloid and Interface Science 262(2), 588–593 (2003). 

4. H. T. Chen, R. Lian, M. Yin, L. R. Lou, W. P. Zhang, S. D. Xia, and J. C. Krupa, “Luminescence concentration quenching of 1D2 state in YPO3:Pr3+,” Journal of Physics: Condensed Matter 13(5), 1151–1158 (2001). 

3. H. T. Chen, M. Yin, R. Lian, L. R. Lou, W. P. Zheng, and S. D. Xia, “Luminescence dependence upon concentration and temperature in YPO3:Pr3+,” Spectroscopy and Spectral Analysis 21(2), 151–154 (2001).

2. D. F. Zhou, Y. H. Chen, C. S. Shi, Y. G. Wei, H. T. Chen, and M. Yin, “Energy transfer in PbWO4/Dy3+ luminescence,” Journal of Alloys and Compounds 322(1-2), 298–301 (2001). 

1. P. B. Xie, W. P. Zhang, M. Yin, H. T. Chen, W. W. Zhang, L. R. Lou, and S. D. Xia, “Photoluminescence properties of surface-modified nanocrystalline ZnS:Mn,” Journal of Colloid and Interface Science 229(2), 534–539 (2000). 

 

 

 

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