Abstract:
:Surface plasmon resonance microscopy (SPRM) with single-direction illumination is a powerful platform for biomedical imaging because of its wide-field, label-free, and high-surface-sensitivity imaging capabilities. However, two disadvantages prevent wider use of SPRM. The first is its poor spatial resolution that can be as large as several micrometers. The second is that SPRM requires use of metal films as sample substrates; this introduces working wavelength limitations. In addition, cell culture growth on metal films is not as universally available as growth on dielectric substrates. Here we show that use of azimuthal rotation illumination allows SPRM spatial resolution to be enhanced by up to an order of magnitude. The metal film can also be replaced by a dielectric multilayer and then a different label-free surface-sensitive photonic microscopy is developed, which has more choices in terms of the working wavelength, polarization, and imaging section, and will bring opportunities for applications in biology.
journal_name
Sci Advjournal_title
Science advancesauthors
Kuai Y,Chen J,Tang X,Xiang Y,Lu F,Kuang C,Xu L,Shen W,Cheng J,Gui H,Zou G,Wang P,Ming H,Liu J,Liu X,Lakowicz JR,Zhang Ddoi
10.1126/sciadv.aav5335subject
Has Abstractpub_date
2019-03-29 00:00:00pages
eaav5335issue
3issn
2375-2548pii
aav5335journal_volume
5pub_type
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