Figure 1 .

PL intensity images from the edge of the patterned area. Intensity within the spectral range of 850 to 1,000 nm was measured at temperatures of 5 K (a), 40 K (b), and 70 K (c). The excitation power and wavelength were 1.77 μW and 532 nm, respectively.

Tommila et al. Nanoscale Research Letters 2012 7:313   doi:10.1186/1556-276X-7-313
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