Article
Chemistry, Physical
A. Angnanon, S. Nualpralaksana, B. Damdee, R. Rajaramakrishna, N. Chanlek, M. Horprathum, S. Kothan, J. Kaewkhao
Summary: This study synthesized EuBO3 phosphors doped with different concentrations of Gd3+ ions and determined their crystal structure using XRD technique. The study found structure dependence luminescence concentration quenching and investigated the photoluminescence behaviors of Eu3+ through excitation and emission spectra. The emission spectra showed prominent peaks of magnetic dipole and electric dipole transitions, indicating the symmetry of the lattice. The emission color of the phosphors was determined.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Computer Science, Information Systems
Yile Fang, Yibing Zhang, Michael C. Lun, Changqing Li
Summary: X-ray luminescence computed tomography (XLCT) combines the high spatial resolution of x-ray imaging with the high measurement sensitivity of optical imaging to image luminescent targets in deep tissues. A new superfast XLCT scan scheme based on a photon counter detector and fly-scanning method has been introduced, allowing for faster scanning speed and simultaneous XLCT and parallel beam CT imaging.
Article
Chemistry, Analytical
Shihua Li, Nangen Yang, Qiuping Ma, Shijie Li, Shufen Tong, Jiewei Luo, Xiaorong Song, Huanghao Yang
Summary: This study investigates the oxidation responsiveness of near-infrared II (NIR-II) luminescent AuNCs and finds that AuNCs capped with different ligands have different oxidation properties in the presence of peroxynitrite anions (ONOO-). N-acetylcysteine-capped AuNCs are more easily oxidized and aggregate into large-sized assemblies, while macromolecular mercapto-beta-cyclodextrin-capped AuNCs do not show this behavior. Furthermore, N-acetylcysteine-capped AuNCs are demonstrated to be effective for sensitive NIR-II PL imaging of mice acute kidney injury (AKI), thanks to the synergistic effect of in situ AuNC aggregation and decreased glomerular filtration rate (GFR) in the injured kidney, surpassing methods solely based on decreased GFR.
ANALYTICAL CHEMISTRY
(2023)
Article
Physics, Multidisciplinary
Jakob Soltau, Markus Osterhoff, Tim Salditt
Summary: This novel approach to x-ray microscopy combines a multilayer zone plate with an iterative phase retrieval scheme to achieve high resolution and quantitative phase contrast.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Qiang Zheng, Mingzeng Peng, Zhuo Liu, Shuyu Li, Rongcheng Han, Han Ouyang, Yubo Fan, Caofeng Pan, Weiguo Hu, Junyi Zhai, Zhou Li, Zhong Lin Wang
Summary: This study developed a force mapping method based on a light nano-antenna array with the use of piezo-phototronic effect, achieving high-resolution dynamic mapping of cell-generated force. The methodology can be applied for fundamental study of cardiomyocyte behavior and provide valuable information for heart-related research.
Article
Chemistry, Applied
Shanshan Hu, Chenzhang Gu, Shuang Lu, Ying Hong, Qi Wu, Mengmeng Fu, Puxian Xiong, Yinzhen Wang
Summary: A series of UVA-emitting LaB3O6:Ce3+ phosphors and La0.96Ce0.04B3O6/PMMA films were prepared. The luminescence properties of the phosphors were studied by varying the calcining temperature, activator concentration, and PL test temperature. The composite films' transmittance and X-ray radiation capacity were also studied by varying the phosphor content. The results show that LaB3O6:Ce3+ can be used for UV phototherapy applications and La0.96Ce0.04B3O6/PMMA can be used for X-ray detection and imaging.
Article
Chemistry, Multidisciplinary
Zhaowei Chen, Vassiliy Tsytsarev, Y. Zou Finfrock, Olga A. Antipova, Zhonghou Cai, Hiroyuki Arakawa, Fritz W. Lischka, Bryan M. Hooks, Rosemarie Wilton, Dongyi Wang, Yi Liu, Brandon Gaitan, Yang Tao, Yu Chen, Reha S. Erzurumlu, Huanghao Yang, Elena A. Rozhkova
Summary: This study demonstrates the use of radioluminescent nanoparticles to stimulate neurons expressing specific genes through external X-rays, advancing optogenetic neural control towards minimally invasive deep brain stimulation.
Article
Radiology, Nuclear Medicine & Medical Imaging
Michael Oumano, Liz Russell, Morteza Salehjahromi, Lou Shanshan, Neeharika Sinha, Wilfred Ngwa, Hengyong Yu
Summary: Gold nanoparticles were visualized and quantified in a human-sized phantom using a clinical MDCT scanner. The study determined the optimal imaging conditions for gold nanoparticles in a human-sized phantom and revealed advantages of gold nanoparticles over typical CT contrast agents such as iodine.
JOURNAL OF APPLIED CLINICAL MEDICAL PHYSICS
(2021)
Article
Geochemistry & Geophysics
Susumu Imashuku, Kazuaki Wagatsuma
Summary: The X-ray-excited optical luminescence (XEOL) method can be used for rapid identification of xenotime, a principal REE bearing mineral. By detecting intense green or greenish-yellow luminescence, xenotime can be distinguished from other minerals in most circumstances.
JOURNAL OF GEOCHEMICAL EXPLORATION
(2021)
Review
Chemistry, Multidisciplinary
Xinzhu Wang, Kanyi Pu
Summary: This tutorial review discusses the recent advances in molecular afterglow imaging, including a comprehensive summary of reported afterglow substrates and mechanisms. The molecular designs of multicomponent afterglow imaging probes are also introduced, along with their biomedical applications in disease diagnosis and treatment. Lastly, future perspectives and potential challenges of molecular afterglow imaging in preclinical uses and clinical translations are discussed.
CHEMICAL SOCIETY REVIEWS
(2023)
Review
Chemistry, Multidisciplinary
Xinyan Zhu, Xiaohan Wang, Hongxin Zhang, Fan Zhang
Summary: Luminescence lifetime imaging has advantages over traditional optical imaging in terms of precise quantification detection, and the long luminescence lifetime of lanthanide-doped nanoparticles (LnNPs) has attracted great attention. LnNPs with long luminescence lifetime not only make it easier to filter out background signals during imaging, but also provide a wide range of tunable lifetime. This article introduces the luminescence mechanisms of LnNPs, strategies for luminescence lifetime modulation, data acquisition methods, and cutting-edge applications in lifetime imaging systems, as well as prospects for improving technologies and extending applications of luminescence lifetime imaging.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Enrico Cavalli, Chiara Nardon, Oliver G. Willis, Francesco Zinna, Lorenzo Di Bari, Silvia Mizzoni, Silvia Ruggieri, Salvatore C. Gaglio, Massimiliano Perduca, Claudio Zaccone, Alessandro Romeo, Fabio Piccinelli
Summary: This study reports the first example of efficient near-infrared Circularly Polarized Luminescence (CPL) in water, achieved by combining a chiral Yb complex with PLGA nanoparticles. The chiral Yb complex exhibits good CPL in organic solvents, and the PLGA nanoparticles protect the metal ion while ensuring its stability and biocompatibility.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Vincent De Andrade, Viktor Nikitin, Michael Wojcik, Alex Deriy, Sunil Bean, Deming Shu, Tim Mooney, Kevin Peterson, Prabhat Kc, Kenan Li, Sajid Ali, Kamel Fezzaa, Doga Gursoy, Cassandra Arico, Saliha Ouendi, David Troadec, Patrice Simon, Francesco De Carlo, Christophe Lethien
Summary: In recent years, transmission X-ray microscopes have become excellent tools for non-invasive characterization of nanoscale materials, but their spatial resolution has lagged behind modern nanostructures. Recent optomechanical breakthroughs have enabled fast 3D tomographic acquisitions with sub-10 nm resolution, narrowing the gap between X-ray and electron microscopy.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
A. A. Kukinov, T. Balashova, B. S. Kaverin, S. Yu Bukhvalova, A. N. Trufanov, M. N. Bochkarev
Summary: The complexes of Eu(III) and Tb(III) with beta-diketonate ligands were tested as donor materials in heterojunction radiovoltaic planar devices. Despite the weak ability to directly convert energy into electricity, these complexes were found to be efficient when used as additional radioluminescent layers. The highest energy conversion efficiency was achieved with the use of the terbium complex with pyrasolonate and triphenylphosphine oxide ligands. Overall, these devices operate as radio-photovoltaic devices with a small contribution from the radio-voltaic effect.
RADIATION PHYSICS AND CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Lili Xu, Kenji Kikushima, Shumpei Sato, Ariful Islam, Tomohito Sato, Shuhei Aramaki, Chi Zhang, Takumi Sakamoto, Fumihiro Eto, Yutaka Takahashi, Ikuko Yao, Manabu Machida, Tomoaki Kahyo, Mitsutoshi Setou
Summary: Mass spectrometry imaging (MSI) allows us to visualize the spatial distribution of molecular components in a sample. In this study, we used Shannon entropy to analyze the MSI data and found different structural changes in low-entropy pixels for kidneys of mice at two different ages. These changes cannot be observed by conventional imaging techniques. We also proposed a method to identify informative molecules by examining changes in peaks within regions of low entropy.