Single-molecule detection has long relied on fluorescent labeling with high quantum-yield
fluorophores. Plasmon-enhanced detection circumvents the need for labeling by allowing …

Since the first report on the far-field optical detection of single metal nanoparticles in the late
1990s, the field has rapidly developed and new methods and concepts have been …

Plasmonic nanostructures enable the generation of large electromagnetic fields confined to
small volumes, potentially providing a route for the development of nanoengineered …

Femtosecond nonlinear optical imaging with nanoscale spatial resolution would provide
access to coupled degrees of freedom and ultrafast response functions on the characteristic …

Because each nonlinear optical (NLO) imaging modality is sensitive to specific molecules or
structures, multimodal NLO imaging capitalizes the potential of NLO microscopy for studies …

The basics of four-wave mixing (FWM) and recent advances in FWM microscopy are
reviewed with a particular emphasis on applications in the field of nanomaterials. The vast …

The vibrational modes of molecules provide an intrinsic contrast mechanism for identifying
components in cells, tissues, and organisms. When excited by a laser, Raman scattered …

With more efficient penetration in biological tissues, near-infrared (NIR) excitation and/or
emission between 1000 nm and 1350 nm opens a second window for in vivo imaging with …

This work demonstrates for the first time that one-photon luminescence in gold nanorods is
an entirely plasmon-induced process. To achieve this goal, we used confocal microscopy in …

Hollow gold nanospheres (HGNs) ranging from 29.9 nm/8.5 nm (outer diameter/shell
thickness) to 51.5 nm/4.5 nm and having aspect ratios spanning 3.5− 11.7 were employed to …