A5064837656- Luminescence Properties of Advanced Materials
- Luminescence and Fluorescent Materials
- Photonic Crystals and Applications
- Radiation Detection and Scintillator Technologies
- Random lasers and scattering media
- Perovskite Materials and Applications
- Nanoplatforms for cancer theranostics
- Advanced Fluorescence Microscopy Techniques
- Photoacoustic and Ultrasonic Imaging
- Nonlinear Optical Materials Studies
- Biosensors and Analytical Detection
- Advanced biosensing and bioanalysis techniques
- Advanced Photocatalysis Techniques
- Spectroscopy Techniques in Biomedical and Chemical Research
- Near-Field Optical Microscopy
- Ga2O3 and related materials
- Organic Light-Emitting Diodes Research
- Glass properties and applications
- Microfluidic and Bio-sensing Technologies
- Inorganic Fluorides and Related Compounds
- Quantum Dots Synthesis And Properties
- Orbital Angular Momentum in Optics
- Bone and Joint Diseases
- Photonic and Optical Devices
- Photochromic and Fluorescence Chemistry
University of Technology Sydney
2018-2025
ARC Centre of Excellence in Future Low-Energy Electronics Technologies
2024-2025
Advanced Materials and Devices (United States)
2025
Kunming University of Science and Technology
2012-2015
The combination of X-ray-irradiation-induced photochromism and persistent radioluminescence in a single material presents an exciting avenue for multi-functional applications such as optical memory, anti-counterfeiting, X-ray detection imaging. However, developing remains significant challenge. Here, white Ba3MgSi2O8:Mn2+ photochromic phosphor was prepared, exhibiting white-to-orange color change (>20 h bright field) good emission (>90 min dark response to radiation. also demonstrated...
Paper-based lateral flow assays, though being low-cost and widely used for rapid in vitro diagnostics, are indicative do not provide sufficient sensitivity the detection quantification of low abundant biomarkers early stage cancer diagnosis. Here, we design a compact device to create focused illumination spot with high irradiance, which activates range highly doped 50 nm upconversion nanoparticles (UCNPs) produce orders magnitude brighter emissions. The employs very laser diode, simplified...
Transparent glass with photochromism and luminescence has emerged as an attractive material due to its exciting prospects in the fields of information encryption 3D optical storage. However, thermal stimulation usually been used bleach photochromic glass, limiting applications. Herein, a new entirely photostimulation-induced reversible doped lanthanide ions silver chloride (RE-Ag glass), was explored. Under alternating 365 nm light 690 laser, (ΔRt = 91%) from transparent black modification...
Abstract Spatial manipulation of a precise number viruses for host cell infection is essential the extensive studies virus pathogenesis and evolution. Albeit optical tweezers have been advanced to atomic level via cooling, it still challenging efficiently trap manipulate arbitrary in an aqueous environment, being restricted by insufficient strength forces lack multifunctional spatial techniques. Here, employing hopping flexibility moving laser position, with large trapping area demonstrated,...
The intracellular metabolism of organelles, like lysosomes and mitochondria, is highly coordinated spatiotemporally functionally. activities lysosomal enzymes significantly rely on the cytoplasmic temperature, heat constantly released by mitochondria as byproduct adenosine triphosphate (ATP) generation during active metabolism. Here, we developed temperature-sensitive LysoDots MitoDots to monitor in situ thermal dynamics mitochondria. design based upconversion nanoparticles (UCNPs) with...
Abstract Skeletal disorders are commonly diagnosed by X-ray imaging, but the radiation limits its use. Optical imaging through near-infrared-II window (NIR-II, 1000–1700 nm) can penetrate deep tissues without risk, targeting of contrast agent is non-specific. Here, we report that lanthanide-doped nanocrystals passively target bone marrow, which be effective for over two months. We therefore develop high-resolution NIR-II method disease diagnosis, including 3D instrumentation to show...
Abstract The reversible luminescence modification of inorganic phosphors has emerged as a promising field, enabling innovative applications such optical memory, multiple anti‐counterfeiting, and photoswitches. Traditional modulation techniques, core–shell structure design energy transfer‐related luminescent ions regulation, face challenges in achieving modification. Chromism induces color changes materials when stimulated by external fields electricity, heat, light. Combining chromism with...
Abstract This study explores the integration of X‐ray‐induced photochromism and photoluminescence in a single material, offering innovative multi‐mode applications optical memory, anti‐counterfeiting, X‐ray detection imaging. The photochromic phosphor LiAlSi 2 O 6 :Sm 3+ is synthesized, which undergoes color change from white to dark green under bright field conditions displays orange after exposure due defect formation. shows accelerated bleaching recovery 473 nm laser stimulation. distinct...
Upconversion luminescent materials (UCLMs) have garnered significant attention due to their broad potential applications in fields such as display technology, biological imaging, and optical sensing. However, optimizing crystal phase morphology remains a challenge. This study systematically investigates the effects of transformation control on upconversion properties K3GaF6:Er3+. By comparing different synthesis methods, we found that hydrothermal method effectively facilitated NaxK3-xGaF6...
A new method for enhancing the upconversion (UC) emission of rare-earth doped nanoparticles is reported, in which Yb3+/Er3+ or Yb3+/Tm3+ co-doped NaYF4 are deposited on to surface photonic crystal (PC) films. The UC PC was notably enhanced when bands were within range band gap PCs, indicating that PCs efficient and selective reflection mirrors. results show may have potential applications optoelectronics lighting devices.
Abstract Owing to the large storage capacity, transparent luminescent glass with photo‐induced coloration properties has attracted considerable interest in recent years. However, lots of photochromic (PC) mechanisms for are related ionic valence transformation, and study associated defects‐induced photochromism is limited. Herein, a kind Sm 3+ doped PC cadmium fabricated, which mechanism systematically investigated by various techniques, such as XPS spectra, thermoluminescence EPR etc. The...
Abstract Photochromic glass shows great promise for 3D optical information encryption and storage applications. The formation of Ag nanoclusters by light irradiation has been a significant development in the field photochromic research. However, extending this approach to other metal remains challenge. In study, we present pioneering method crafting with reliably adjustable dual‐mode luminescence both NIR visible spectra. This was achieved leveraging bimetallic clusters bismuth, resulting...
Metal nanoparticle plasmons or the photonic crystal effect are being widely used to modify luminescence properties of materials. However, coupling surface with crystals seldom reported for enhancing In this paper, a new method upconversion emission enhancement rare-earth doped nanoparticles is reported, attributed band gap effects. Opal/Ag hybrid substrates were prepared by depositing Ag on top layer opals magnetron sputtering. The selective red green NaYF4:Yb3+,Er3+ opal/Ag and Bragg...
Video-rate super-resolution imaging through biological tissue can visualize and track biomolecule interplays transportations inside cellular organisms. Structured illumination microscopy allows for wide-field super resolution observation of samples but is limited by the strong absorption scattering light tissues, which degrades its resolution. Here we report a photon upconversion scheme using lanthanide-doped nanoparticles transparent window, featured near-infrared low-irradiance nonlinear...
Abstract Point spread function (PSF) engineering by an emitter's response can code higher‐spatial‐frequency information of image for microscopy to achieve super‐resolution. However, complexed excitation optics or repetitive scans are needed, which explains the issues low speed, poor stability, and operational complexity associated with current laser scanning approaches. Here, diverse emission responses upconversion nanoparticles (UCNPs) reported super‐resolution nanoscopy improve imaging...
The control in optical uniformity of single nanoparticles and tuning their diversity multiple dimensions, dot to dot, holds the key unlocking nanoscale applications. Here we report that entire lifetime profile upconversion nanoparticle (τ2 profile) can be resolved by confocal, wide-field, super-resolution microscopy techniques. advances both spatial temporal resolutions push limit multiplexing from microscale nanoscale. We further demonstrate time-domain fingerprints created utilizing...
Conventional biomedical imaging modalities, including endoscopy, X-rays, and magnetic resonance, are invasive cannot provide sufficient spatial temporal resolutions for regular of gastrointestinal (GI) tract to guide prognosis therapy GI diseases. Here we report a non-invasive method optical tract. It is based on new type lanthanide-doped nanocrystal with near-infrared (NIR) excitation at 980 nm second NIR window (NIR-IIb) (1500~1700 nm) fluorescence emission around 1530 nm. The rational...
Nonblinking, nonbleaching, and superbright single upconversion nanoparticles have been recently discovered with nonlinear power-dependent properties can be switchable under dual-beam excitations, which are ideal for super-resolution microscopy, single-molecule tracking, digital assays. Here, we report that the brightness of Nd3+-Yb3+-Er3+-doped displays a pair unusual double helix shapes as function power densities 976 808 nm excitations. We systemically analyze emission spectra, lifetimes,...
Abstract The COVID‐19 pandemic has underscored the critical need for rapid and accurate diagnostic tools. Current methods, including Polymerase Chain Reaction antigen tests (RAT), have limitations in speed, sensitivity, requirement specialized equipment trained personnel. Nanotechnology, particularly upconversion nanoparticles (UCNPs), offer a promising alternative due to their unique optical properties. UCNPs can convert low‐energy near‐infrared light into higher‐energy visible light,...