Spectroscopy with pointed probes 305 figure 1 chemical specificity versus spatial resolution for different microscopic techniques.
Near field optical microscopy and spectroscopy with pointed probes.
Trautman thenear field optical interaction betweenasharpprobeandasampleof interest canbe exploitedtoimage spectroscopicallyprobe ormodifysurfacesataresolution downto 12 nm inaccessible by traditional far field techniques.
2006 05 05 00 00 00 in recent years developments in near ï eld techniques exploiting farï eld illumination of a pointed apertureless probe have demonstrated a newfound excitement.
Microscopy spectroscopy andsurface modification beyondthe diffraction limit eric betzig andjayk.
Near field optical microscopy and spectroscopy with pointed probes article pdf available in annual review of physical chemistry 57 1 303 31 february 2006 with 112 reads how we measure reads.
In order to achieve an optical resolution greater than the diffraction limit the resolution limit of conventional optical microscopy the probe tip must be brought within this near field region.
Femtosecond pump probe near field optical microscopy review of scientific instruments 70 2758 1999.
Near field optical microscopy and spectroscopy with pointed probes near field optical microscopy and spectroscopy with pointed probes novotny lukas.
For nsom the separation distance between probe and specimen surface is typically on the order of a few nanometers.
Scanning near field optical microscopy snom is a microscopic technique for nanostructure investigation that achieves sub wavelength spatial resolution by exploiting short ranged interactions between a sharply pointed probe and the sample mediated by evanescent waves.
In this review we briefly describe the evolution of the field from the classical aperture based approach toward the development of near field optical microscopy with pointed probes.
Ultrafast spectroscopy of semiconductors and semiconductor nanostructures springer berlin 1996.
Aperture based near field optical microscopy as illustrated in figure 2 the spatial resolution x of standard optical.
Many of the attractive features of.
These mechanisms include raman and infrared absorption for chemical contrast as well as materials contrast based on dielectric dispersion.
Near field scanning optical microscopy nsom achieves an excellent product of the two factors.
Near field scanning optical microscopy nsom or scanning near field optical microscopy snom is a microscopy technique for nanostructure investigation that breaks the far field resolution limit by exploiting the properties of evanescent waves in snom the excitation laser light is focused through an aperture with a diameter smaller than the excitation wavelength resulting in an evanescent.
