Impurity doping is a promising method to impart new properties to various materials. Due to
their unique optical, magnetic, and electrical properties, rare-earth ions have been …

The attractive features of lanthanide-doped upconversion luminescence (UCL), such as high
photostability, nonphotobleaching or photoblinking, and large anti-Stokes shift, have shown …

Smart control of photon upconversion is a key strategy for lanthanide-based materials used
in biological and photonic applications. However, this has remained a challenge for the …

Triplet–triplet annihilation based molecular photon upconversion (TTA-UC) is an exciting
research area for a broad range of photonic applications due to its tunable spectral range …

Ocular drug delivery has constantly challenged ophthalmologists and drug delivery
scientists due to various anatomical and physiological barriers. Static and dynamic ocular …

Upconversion is a nonlinear optical phenomenon that involves the emission of high‐energy
photons by sequential absorption of two or more low‐energy excitation photons. Due to their …

Lanthanide-doped upconversion nanoparticles (UCNPs) possess the remarkable ability to
convert multiple near-infrared (NIR) photons into higher energy ultraviolet–visible (UV–vis) …

Using multi-color visible lights for independent optogenetic manipulation of multiple
neuronal populations offers the ability for sophisticated brain functions and behavior …

In chemodynamic therapy (CDT), novel chemodynamic reactions are urgently needed to
promote the generating efficiency of reactive oxygen species (ROS), and meanwhile the real …

Conspectus Owing to their unique features, the past decade has witnessed rapid
developments of lanthanide-activated nanoparticles for biological applications. These …