Colloidal self-assembly refers to a solution-processed assembly of nanometer-/micrometer-
sized, well-dispersed particles into secondary structures, whose collective properties are …

In the last two decades, plasmon resonance in gold nanoparticles (Au NPs) has been the
subject of intense research efforts. Plasmon physics is intriguing and its precise modelling …

Quantitative determination and in situ monitoring of molecular chirality at extremely low
concentrations is still challenging with simple optics because of the molecular-scale …

Active plasmonics is a burgeoning and challenging subfield of plasmonics. It exploits the
active control of surface plasmon resonance. In this review, a first-ever in-depth description …

The interaction between light and matter can be controlled efficiently by structuring materials
at a length scale shorter than the wavelength of interest. With the goal to build optical …

The multipole expansion is a key tool in the study of light–matter interactions. All the
information about the radiation of and coupling to electromagnetic fields of a given charge …

The spatial arrangement of plasmonic nanoparticles can dramatically affect their interaction
with electromagnetic waves, which offers an effective approach to systematically control their …

Responsive optical nanomaterials that can sense and translate various external stimuli into
optical signals, in the forms of observable changes in appearance and variations in spectral …

Control of the angular momentum of light at the nanoscale is critical for many applications of
subwavelength photonics, such as high-capacity optical communications devices, super …

Breaking time-reversal symmetry enables the realization of non-reciprocal devices, such as
isolators and circulators, of fundamental importance in microwave and photonic …