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Sample heating in near-field scanning optical microscopy
dc.contributor.author | Erickson, Elizabeth S. | |
dc.contributor.author | Dunn, Robert C. | |
dc.date.accessioned | 2014-12-05T16:28:44Z | |
dc.date.available | 2014-12-05T16:28:44Z | |
dc.date.issued | 2005-10-05 | |
dc.identifier.citation | Erickson, Elizabeth S. & Dunn, Robert C. "Sample heating in near-field scanning optical microscopy." Appl. Phys. Lett. 87, 201102 (2005); http://dx.doi.org/10.1063/1.2130388. | |
dc.identifier.uri | http://hdl.handle.net/1808/16048 | |
dc.description | This is the published version, also available here: http://dx.doi.org/10.1063/1.2130388. | |
dc.description.abstract | Heating near the aperture of aluminumcoated,fiber opticnear-field scanning optical microscopy probes was studied as a function of input and output powers. Using the shear-force feedback method, near-field probes were positioned nanometers above a thermochromic polymer and spectra were recorded as the input power was varied. Excitation at 405 nm of a thin polymer film incorporating perylene and N-allyl-N-methylaniline leads to dual emission peaks in the spectra. The relative peak intensity is temperature sensitive leading to a ratiometric measurement, which avoids complications based solely on intensity. Using this method, we find that the proximal end of typical near-field probes modestly increase in temperature to 40–45 °C at output powers of a few nanowatts (input power of ∼0.15mW). This increases to 55–65 °C at higher output powers of 50 nW or greater (input power of ∼2–4mW). Thermal heating of the probe at higher powers leads to probe elongation, which limits the heating experienced by the sample. | |
dc.publisher | American Institute of Physics | |
dc.subject | Aluminium | |
dc.subject | Apertures | |
dc.subject | Fiber optics | |
dc.subject | Optical coatings | |
dc.subject | Optical polymers | |
dc.title | Sample heating in near-field scanning optical microscopy | |
dc.type | Article | |
kusw.kuauthor | Erickson, Elizabeth S. | |
kusw.kuauthor | Dunn, Robert C. | |
kusw.kudepartment | Chemistry | |
dc.identifier.doi | 10.1063/1.2130388 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item does not meet KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |