Abstract
Terahertz technology is one of the most promising research areas in the 21st century. In this work, we intend to compare the research status quo on terahertz technology between 1990 and 2010 using knowledge domain visualization techniques. Our data consists of 633 patents retrieved from Aureka management platform and 10,344 journal articles indexed in the ISI web of knowledge. Our analysis is a combination of two information visualization tools for analysis, Aureka and CiteSpace. Aureka is allowed for the analysis of patents filed/granted each year, priority country, inventors, assignees, citation counting, and cluster analysis, while networks of co-authors, countries, institutions, document co-citation networks and document co-citation clusters, are performed by CiteSpace. This research provides a comprehensive domain visualization map of innovation and knowledge in the area of terahertz technology. Our result shows that Aureka and CiteSpace are two promising visualization approaches to analyze patents and papers in any given field.
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Auston, D. H., Cheung, K. P., & Smith, P. R. (1984). Picosecond photoconducting Hertzian dipoles. Applied Physics Letters, 45(3), 284–286.
Auston, D. H., & Smith, P. R. (1983). Generation and detection of millimeter waves by picosecond photoconductivity. Applied Physics Letters, 43(7), 631–633.
Boyack, K. W., Wylie, B. N., & Davidson, G. S. (2002). Domain visualization using VxInsight® for science and technology management. Journal of the American Society for Information Science and Technology, 53(9), 764–774.
Chan, W. L., Deibel, J., & Mittleman, D. M. (2007). Imaging with terahertz radiation. Reports on Progress in Physics, 70, 1325–1379.
Chen, C. (2004). Searching for intellectual turning points: progressive knowledge domain visualization. Proceedings of the National academy of Sciences of the United States of America, 101(Suppl 1), 5303–5310.
Chen, C. (2006). CiteSpace II: detecting and visualizing emerging trends and transient patterns in scientific literature. Journal of the American Society for Information Science and Technology, 57(3), 359–377.
Chen, C., Paul, R. J., & O’Keefe, B. (2001). Fitting the jigsaw of citation: information visualization in domain analysis. Journal of the American Society for Information Science and Technology, 52(4), 315–330.
Chen, C., Song, I. Y., Yuan, X., & Zhang, J. (2008). The thematic and citation landscape of Data and Knowledge Engineering (1985–2007). Data & Knowledge Engineering, 67(2), 234–259.
Clark, K., Cavicchi, J., Jensen, K., Fitzgerald, R., Bennett, A., & Kowalski, S. P. (2011). Patent data mining: a tool for accelerating HIV vaccine innovation. Vaccine., 29(24), 4086–4093.
Faist, J., Capasso, F., Sivco, D. L., Sirtori, C., Hutchinson, A. L., & Cho, A. Y. (1994). Quantum cascade laser. Science, 264(5158), 553–556.
Ferguson, B., & Zhang, X. C. (2002). Materials for terahertz science and technology. Nature Materials, 1(1), 26–33.
Grischkowsky, D., Keiding, S., Van Exter, M., & Fattinger, C. (1990). Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors. Journal of the Optical Society of America B, 7(10), 2006–2015.
Han, Y. J. (2007). Measuring industrial knowledge stocks with patents and papers. Journal of Informatics, 1(4), 269–276.
Hu, B. B., & Nuss, M. C. (1995). Imaging with terahertz waves. Optics Letters, 20(16), 1716–1718.
Jansen, C., Wietzke, S., Peters, O., Scheller, M., Vieweg, N., Salhi, M., et al. (2010). Terahertz imaging: applications and perspectives. Applied Optics, 49(19), E48–E57.
Jepsen, P. U., Cooke, D. G., & Koch, M. (2011). Terahertz spectroscopy and imaging–modern techniques and applications. Laser & Photonics Reviews, 5(1), 124–166.
Kalpana Sastry, R., Rashmi, H. B., & Badri, J. (2011). Research and development perspectives of transgenic cotton: evidence from patent landscape studies. Journal of Intellectual Property Rights, 16, 139–153.
Köhler, R., Tredicucci, A., Beltram, F., Beere, H. E., Linfield, E. H., Davies, A. G., et al. (2002). Terahertz semiconductor-heterostructure laser. Nature, 417(6885), 156–159.
Kono, S., Tani, M., Gu, P., & Sakai, K. (2000). Detection of up to 20 THz with a low-temperature-grown GaAs photoconductive antenna gated with 15 fs light pulses. Applied Physics Letters, 77(25), 4104–4106.
Lee, Y. (2009). What affects a patent’s value? An analysis of variables that affect technological, direct economic, and indirect economic value: an exploratory conceptual approach. Scientometrics, 79(3), 623–633.
Lee, A. W. M., Qin, Q., Kumar, S., Williams, B. S., Hu, Q., & Reno, J. L. (2006). Real-time terahertz imaging over a standoff distance (>25 meters). Applied Physics Letters, 89(14), 141125(1–3).
Lv, P. H., Wang, G. F., Wan, Y., Liu, J., Liu, Q., & Ma, F. (2011). Bibliometric trend analysis on global graphene research. Scientometrics, 88(2), 399–419.
Meyer, M. (2000). Does science push technology? Patents citing scientific literature. Research Policy, 29(3), 409–434.
Mittleman, D. M., Jacobsen, R. H., & Nuss, M. C. (1996). T-ray imaging. IEEE Journal of Selected Topics in Quantum Electronics, 2(3), 679–692.
Moehrle, M. G., Walter, L., Bergmann, I., Bobe, S., & Skrzipale, S. (2010). Patinformatics as a business process: a guideline through patent research tasks and tools. World Patent Information, 32(4), 291–299.
Nahata, A., Weling, A. S., & Heinz, T. F. (1996). A wideband coherent terahertz spectroscopy system using optical rectification and electro-optic sampling. Applied Physics Letters, 69(16), 2321–2323.
Narin, F. (1994). Patent bibliometrics. Scientometrics, 30(1), 147–155.
Narin, F., & Olivastro, D. (1998). Linkage between patents and papers: an interim EPO/US comparison. Scientometrics, 41(1), 51–59.
Nelson, A. J. (2009). Measuring knowledge spillovers: what patents, licenses and publications reveal about innovation diffusion. Research Policy, 38(6), 994–1005.
Niazi, M., & Hussain, A. (2011). Agent-based computing from multi-agent systems to agent-based models: a visual survey. Scientometrics, 89(2), 479–499.
Seymour, R. (2008). Platinum group metals patent analysis and mapping. Platinum Metals Review, 52(4), 231–240.
Siegel, P. H. (2002). Terahertz technology. Microwave Theory and Techniques, IEEE Transactions on, 50(3), 910–928.
Smith, P. R., Auston, D. H., & Nuss, M. C. (1988). Subpicosecond photoconducting dipole antennas. IEEE Journal of Quantum Electronics, 24(2), 255–260.
Sternitzke, C. (2009). Patents and publications as sources of novel and inventive knowledge. Scientometrics, 79(3), 551–561.
Thomas, V. J., Sharma, S., & Jain, S. K. (2011). Using patents and publications to assess R&D efficiency in the states of the USA. World Patent Information, 33(1), 4–10.
Tonouchi, M. (2007). Cutting-edge terahertz technology. Nature Photonics, 1(2), 97–105.
Tonta, Y., & Düzyol, G. (2010). Mapping the structure and evolution of electronic publishing as a research field using co-citation analysis. 14th International Conference on Electronic Publishing, pp. 406–420.
Trippe, A. J. (2003). Patinformatics Tasks to tools. World Patent Information, 25(3), 211–221.
Tussen, R. J. W., Buter, R. K., & Van Leeuwen, T. N. (2000). Technological relevance of science: an assessment of citation linkages between patents and research papers. Scientometrics, 47(2), 389–412.
Williams, G. P. (2002). FAR-IR/THz radiation from the Jefferson Laboratory, energy recovered linac, free electron laser. Review of Scientific Instruments, 73(3), 1461–1463.
Williams, B. S., Callebaut, H., Kumar, S., Hu, Q., & Reno, J. L. (2003). 3.4-THz quantum cascade laser based on longitudinal-optical-phonon scattering for depopulation. Applied Physics Letters, 82(1015), 1015–1017.
Wong, C. Y., & Goh, K. L. (2010). Growth behavior of publications and patents: a comparative study on selected Asian economies. Journal of Informetrics, 4(4), 460–474.
Wu, Q., & Zhang, X. C. (1995). Free-space electro-optic sampling of terahertz beams. Applied Physics Letters, 67(24), 3523–3525.
Xie, X., Dai, J., & Zhang, X. C. (2006). Coherent control of THz wave generation in ambient air. Physical Review Letters, 96(7), 75005(1–4).
Yang, Y., Akersa, L., Klosea, T., & Yang, C. B. (2008). Text mining and visualization tools. Impressions of Emerging Capabilities, 30, 280–293.
Yuan, J. P., Yue, W. P., Su, C., Wu, Z., Ma, Z., Pan, Y. T., et al. (2010). Patent activity on water pollution and treatment in China—a scientometric perspective. Scientometrics, 83(3), 639–651.
Zhang, X. C. (2002). Terahertz wave imaging: horizons and hurdles. Physics in Medicine & Biology, 47, 3667–3677.
Zhang, X. C., Hu, B. B., Darrow, J. T., & Auston, D. H. (1990). Generation of femtosecond electromagnetic pulses from semiconductor surfaces. Applied Physics Letters, 56(11), 1011–1013.
Zhang, X. C., Ma, X. F., Jin, Y., Lu, T. M., Boden, E. P., Phelps, P. D., et al. (1992). Terahertz optical rectification from a nonlinear organic crystal. Applied Physics Letters, 61(26), 3080–3082.
Zhao, R., & Wang, J. (2011). Visualizing the research on pervasive and ubiquitous computing. Scientometrics, 86(3), 593–612.
Zhao, R. Y., Wang, M., Dang, Z. H., Dang, Z., & Zhang, G. (2012). Visual Analysis of International Oil Flax Research. Advanced Materials Research, 343, 673–677.
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Liu, G. Visualization of patents and papers in terahertz technology: a comparative study. Scientometrics 94, 1037–1056 (2013). https://doi.org/10.1007/s11192-012-0782-x
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DOI: https://doi.org/10.1007/s11192-012-0782-x