Fast adaptive focusing confocal Raman microscopy for large-area two-dimensional materials.
Talanta
; 276: 126301, 2024 Aug 15.
Article
in En
| MEDLINE
| ID: mdl-38781915
ABSTRACT
Large-area two-dimensional (2D) materials possess significant potential in the development of next generation semiconductor due to their unique physicochemical properties. Confocal Raman spectroscopy (CRM), a typical 2D material characterization method, has a limited effective measurement area owing to the restricted focus depth of the system and the less-than-ideal level of the substrate. We propose fast adaptive focusing confocal Raman microscopy (FAFCRM) to realize real-time focusing detection for large-area 2D materials. By observing spot changes on the charge coupled device (CCD) caused by placing an aperture in front of the CCD, the methodology gives a focusing resolution up to 100 nm per 60 µm without axial scanning. A graphene was measured over 25.6 mm × 25.6 mm area on focus through all the scanning. The research results provide new perspectives for non-destructive characterization of 2D materials at the inch level.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Language:
En
Journal:
Talanta
Year:
2024
Type:
Article