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 …

Luminescence imaging in biomedical research has allowed new insights into the
architecture of pathological tissues, signalling networks and cell interactions, and is now …

Light has profoundly impacted modern medicine and healthcare, with numerous
luminescent agents and imaging techniques currently being used to assess health and treat …

In vivo imaging in the second near-infrared window (NIR-II, 1000–1700 nm), which enables
us to look deeply into living subjects, is producing marvelous opportunities for biomedical …

Persistent luminescence is not affected by background autofluorescence, and thus holds the
promise of high-contrast bioimaging. However, at present, persistent luminescent materials …

Lanthanide-based upconversion nanomaterials have recently attracted considerable
attention in both fundamental research and various frontier applications owing to their …

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

Light scattering by biological tissues sets a limit to the penetration depth of high-resolution
optical microscopy imaging of live mammals in vivo. An effective approach to reduce light …

Optical imaging is an indispensable tool in clinical diagnostics and fundamental biomedical
research. Autofluorescence-free optical imaging, which eliminates real-time optical …

Metal agents have made incredible strides in preclinical research and clinical applications in
recent years, but their short emission/absorption wavelengths continue to be a barrier to …