Subsurface Raman imaging with nanoscale resolution.
نویسندگان
چکیده
We report on chemically specific, subsurface imaging with high spatial resolution. Using tip-enhanced Raman spectroscopy, we probe carbon nanotubes buried beneath a host dielectric media. We demonstrate our ability to map and resolve specific vibrational modes with 30 nm spatial resolution for dielectric layers with different thicknesses.
منابع مشابه
Nanoscale mapping of catalytic activity using tip-enhanced Raman spectroscopy.
Chemical mapping of a photocatalytic reaction with nanoscale spatial resolution is demonstrated for the first time using tip-enhanced Raman spectroscopy (TERS). An ultrathin alumina film applied to the Ag-coated TERS tip blocks catalytic interference whilst maintaining near-field electromagnetic enhancement, thus enabling spectroscopic imaging of catalytic activity on nanostructured Ag surfaces.
متن کاملTip-enhanced Raman imaging: an emergent tool for probing biology at the nanoscale.
Typically limited by the diffraction of light, most optical spectroscopy methods cannot provide the spatial resolution necessary to characterize specimens at the nanoscale. An emerging exception to this rule is tip-enhanced Raman spectroscopy (TERS), which overcomes the diffraction limit through electromagnetic field localization at the end of a sharp metallic tip. As demonstrated by the Zenobi...
متن کاملOptical imaging with nanoscale resolution using optical nonlinearities and spatiotemporal modulation
We suggest a type of imaging technique that uses optical nonlinearities and spatiotemporal modulation to achieve nanoscale resolution in the far field. The technique utilizes intense laser beams to produce an optical excitation with spatial features that are much smaller than the wavelength of light. Nonlinear mixing with the excitation can then be used to imprint the information contained in h...
متن کاملOpto-nanomechanical spectroscopic material characterization.
The non-destructive, simultaneous chemical and physical characterization of materials at the nanoscale is an essential and highly sought-after capability. However, a combination of limitations imposed by Abbe diffraction, diffuse scattering, unknown subsurface, electromagnetic fluctuations and Brownian noise, for example, have made achieving this goal challenging. Here, we report a hybrid appro...
متن کاملCombined Scanning Probe Microscopy and Confocal Raman Spectroscopy for Functional Imaging of the Layered Materials
Comprehensive investigations of the nano-structured materials and devices are impossible without development of the modern investigative techniques, allowing noninvasive imaging of the processes defining materials functionality on the nanoscale. Scanning probe microscopy (SPM) is one of such paradigmatic tools. Since its development, about thirty years ago, it has given rise to numerous ancilla...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Nano letters
دوره 6 4 شماره
صفحات -
تاریخ انتشار 2006