Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Single-particle spectroelectrochemistry provides optical insight into understanding physical and chemical changes occurring on the nanoscale. While changes in dark-field scattering during electrochemical charging are well understood, changes to the photoluminescence of plasmonic nanoparticles under similar conditions are less studied. Here, we use correlated single-particle photoluminescence and dark-field scattering to compare their plasmon modulation at applied potentials. We find that changes in the emission of a single gold nanorod during charge density tuning of intraband photoluminescence can be attributed to changes in the Purcell factor and absorption cross section. Finally, modulation of interband photoluminescence provides an additional constructive observable, giving promise for establishing dual channel sensing in spectroelectrochemical measurements.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.jpclett.2c03566 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Optical detection of single sub-15 nm objects using elastic scattering strong coupling.
Nat Commun
August 2025
Faculty of Science and Technology, MESA+ Institute for Nanotechnology, University of Twente, Enschede, The Netherlands.
Metallic nano-objects play crucial roles in diverse fields, including biomedical imaging, nanomedicine, spectroscopy, and photocatalysis. Nano-objects smaller than 15 nm exhibit extremely low scattering cross-sections, posing a significant challenge for optical detection. An approach to enhance optical detection is to exploit nonlinearity of strong coupling regime, especially for elastic scattering, which is universal to all objects.
View Article and Find Full Text PDFContrast by electron microscopy in thick biological specimens.
J Microsc
August 2025
Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot, Israel.
The contributions of coherent bright-field phase and incoherent dark-field amplitude contrast are investigated for thick biological specimens. A model for a T4 phage is constructed and images simulated for both TEM and STEM phase contrast using a multislice code. For TEM, the fraction of the illumination intensity available for phase contrast imaging is limited by the fraction of electrons in the zero loss peak, the plasmon peak, or the Landau distribution peak for very thick specimens.
View Article and Find Full Text PDFDual-Mode Method for the Sensitive Detection of β-Secretase (BACE1) Based on Surface-Enhanced Raman Scattering and Dark-Field Microscopy.
Anal Chem
August 2025
Key Laboratory of Environmental Medicine Engineering of Ministry of Education, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 210009, P. R. China.
β-Secretase (BACE1), a key enzyme to producing neurotoxic β-amyloid, is a potential biomarker of Alzheimer's disease (AD). Developing a sensitive and efficient detection method for BACE1 activity is significant for AD progression evaluation. Due to the poor cleavage efficiency and acidic working conditions of BACE1, developing probes with high stability and strong signals is challenging for its detection.
View Article and Find Full Text PDFThe occurrence of blooms poses a potential hazard to both human society and the ecological environment, particularly concerning the safety of cooling systems in coastal nuclear power plants. However, current ecological monitoring techniques fail to dynamically detect the densities of solitary cells of prior to the blooms, thus hindering timely interventions. This study proposes a framework for harmful algae monitoring by integrating underwater microscopic imaging, image processing, and object detection.
View Article and Find Full Text PDFSurface defects on fused silica components are susceptible to damage under high-fluence ultraviolet pulse laser irradiation, which is one of the key factors limiting the improvement of the laser damage resistance. However, there is still an absence of intuitive non-destructive evaluation methods for the laser damage resistance of surface defects. In this paper, we have developed a multimodal surface defect detection system.
View Article and Find Full Text PDF