Contact

  • Work
    sangjun2@stanford.edu
    University - Staff Department: SLAC National Accelerator Laboratory Position: Staff Engineer
    • 2575 Sand Hill Rd
    • Mailstop 0069
    • Menlo Park,  California  94025 

Additional Info

  • Mail Code: 69

All Publications

  • Hybrid X-ray Spectroscopy-Based Approach To Acquire Chemical and Structural Information of Single-Walled Carbon Nanotubes with Superior Sensitivity JOURNAL OF PHYSICAL CHEMISTRY C Sainio, S., Wester, N., Titus, C. J., Liao, Y., Zhang, Q., Nordlund, D., Sokaras, D., Lee, S., Irwin, K. D., Doriese, W. B., O'Neil, G. C., Swetz, D. S., Ullom, J. N., Kauppinen, E., Laurila, T., Koskinen, J. 2019; 123 (10): 6114–20

    View details for DOI 10.1021/acs.jpcc.9b00714

    View details for Web of Science ID 000461537400032

  • Thermally driven mesoscale chemomechanical interplay in Li0.5Ni0.6Mn0.2Co0.2O2 cathode materials JOURNAL OF MATERIALS CHEMISTRY A Wei, C., Zhang, Y., Lee, S., Mu, L., Liu, J., Wang, C., Yang, Y., Doeff, M., Pianetta, P., Nordlund, D., Du, X., Tian, Y., Zhao, K., Lee, J., Lin, F., Liu, Y. 2018; 6 (45): 23055–61

    View details for DOI 10.1039/c8ta08973f

    View details for Web of Science ID 000451738200071

  • L-edge spectroscopy of dilute, radiation-sensitive systems using a transition-edge-sensor array JOURNAL OF CHEMICAL PHYSICS Titus, C. J., Baker, M. L., Lee, S., Cho, H., Doriese, W. B., Fowler, J. W., Gaffney, K., Gard, J. D., Hilton, G. C., Kenney, C., Knight, J., Li, D., Marks, R., Minitti, M. P., Morgan, K. M., O'Neil, G. C., Reintsema, C. D., Schmidt, D. R., Sokaras, D., Swetz, D. S., Ullom, J. N., Weng, T., Williams, C., Young, B. A., Irwin, K. D., Solomon, E. I., Nordlund, D. 2017; 147 (21): 214201

    Abstract

    We present X-ray absorption spectroscopy and resonant inelastic X-ray scattering (RIXS) measurements on the iron L-edge of 0.5 mM aqueous ferricyanide. These measurements demonstrate the ability of high-throughput transition-edge-sensor (TES) spectrometers to access the rich soft X-ray (100-2000 eV) spectroscopy regime for dilute and radiation-sensitive samples. Our low-concentration data are in agreement with high-concentration measurements recorded by grating spectrometers. These results show that soft-X-ray RIXS spectroscopy acquired by high-throughput TES spectrometers can be used to study the local electronic structure of dilute metal-centered complexes relevant to biology, chemistry, and catalysis. In particular, TES spectrometers have a unique ability to characterize frozen solutions of radiation- and temperature-sensitive samples.

    View details for PubMedID 29221417

    View details for PubMedCentralID PMC5720893

  • High count-rate study of two TES x-ray microcalorimeters with different transition temperatures SUPERCONDUCTOR SCIENCE & TECHNOLOGY Lee, S., Adams, J. S., Bandler, S. R., Betancourt-Martinez, G. L., Chervenak, J. A., Eckart, M. E., Finkbeiner, F. M., Kelley, R. L., Kilbourne, C. A., Porter, F. S., Sadleir, J. E., Smith, S. J., Wassell, E. J. 2017; 30 (10)

    View details for DOI 10.1088/1361-6668/aa83d2

    View details for Web of Science ID 000409308700003

  • Parametric Characterization of TES Detectors Under DC Bias IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY Chiao, M. P., Smith, S. J., Kilbourne, C. A., Adams, J. S., Bandler, S. R., Betancourt-Martinez, G. L., Chervenak, J. A., Datesman, A. M., Eckart, M. E., Ewin, A. J., Finkbeiner, F. M., Figueroa-Feliciano, E., Kelley, R. L., Lee, S. J., Leutenegger, M., Porter, F. S., Sadleir, J. E., Wassell, E. J., Yoon, W. 2017; 27 (4)

    View details for DOI 10.1109/TASC.2016.2645164

    View details for Web of Science ID 000395452200001

  • Development of x-ray microcalorimeter imaging spectrometers for the X-ray Surveyor mission concept Bandler, S. R., Adams, J. S., Chervenak, J. A., Datesman, A. M., Eckart, M. E., Finkbeiner, F. M., Kelley, R. L., Kilbourne, C. A., Betancourt-Martineza, G., Miniussi, A. R., Porter, F. S., Sadleir, J. E., Sakai, K., Smith, S. J., Stevenson, T. R., Wakeham, N. A., Wassell, E. J., Yoon, W., Becker, D., Bennett, D., Doriese, W. B., Fowler, J. W., Gard, J. D., Hilton, G. C., Mates, B., Morgan, K. M., Reintsema, C. D., Swetz, D., Ullom, J. N., Chaudhuri, S., Irwin, K. D., Lee, S., Vikhlinin, A., DenHerder, J. W., Takahashi, T., Bautz, M. SPIE-INT SOC OPTICAL ENGINEERING. 2016

    View details for DOI 10.1117/12.2232156

    View details for Web of Science ID 000387731500017