TY - JOUR
T1 - Observation of local light propagation in ordered LATEX layers by scanning near-field optical microscope
AU - Fujimura, T.
AU - Itoh, T.
AU - Hayashibe, K.
AU - Edamatsu, K.
AU - Shimoyama, K.
AU - Shimada, R.
AU - Imada, A.
AU - Koda, T.
AU - Segawa, Y.
AU - Chiba, N.
AU - Muramatsu, H.
AU - Ataka, T.
N1 - Funding Information:
We wish to thank Profs K. Ohtaka and H. Miyazaki for their useful discussion. We are also grateful to Dr K. Takeda of Japan Synthetic Rubber Co. for supplying us with the non-doped 1.0 urn polystyrene particles. One of us (T.I.) is grateful to Profs K. Cho and M. Fujihira for their stimulated discussion and encouragement. This work was partially supported by the Grant-in-Aid for the Scientific Research from the Ministry of Education, Science, Sports and Culture and by the Mitsubishi Foundation.
PY - 1997/8/1
Y1 - 1997/8/1
N2 - Under the local excitation by a scanning near-field optical microscope, we have observed the transmission and luminescence excitation images of the hexagonally close-packed single layers of ordered, dye-doped polystyrene particles (LATEX) of 1.0 and 0.37 μm in diameter. The transmission images with the spatial resolution shorter than the optical wavelength dramatically changes, depending not only on the diameter of the particles but also on the aperture size of the probe tip end of the microscope. The luminescence excitation images for the single layers composed of particles, all or a part of which is dye-doped, give the information how the excitation light propagates through the layers. From these results we propose that the localized and extended modes of electromagnetic waves with large wave vectors propagating across and along the layers, respectively, are generated under the local excitation by the near-field effect.
AB - Under the local excitation by a scanning near-field optical microscope, we have observed the transmission and luminescence excitation images of the hexagonally close-packed single layers of ordered, dye-doped polystyrene particles (LATEX) of 1.0 and 0.37 μm in diameter. The transmission images with the spatial resolution shorter than the optical wavelength dramatically changes, depending not only on the diameter of the particles but also on the aperture size of the probe tip end of the microscope. The luminescence excitation images for the single layers composed of particles, all or a part of which is dye-doped, give the information how the excitation light propagates through the layers. From these results we propose that the localized and extended modes of electromagnetic waves with large wave vectors propagating across and along the layers, respectively, are generated under the local excitation by the near-field effect.
KW - Imaging characteristics
KW - Light propagation
KW - Near-field microscopy
KW - Photonic band
KW - Polystyrene particles
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U2 - 10.1016/S0921-5107(97)00087-1
DO - 10.1016/S0921-5107(97)00087-1
M3 - Article
AN - SCOPUS:0001911559
VL - 48
SP - 94
EP - 102
JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
SN - 0921-5107
IS - 1-2
ER -