Article
Materials Science, Ceramics
Lia Mara Marcondes, Mariana Carolina de Castro Silva, Douglas Faza Franco, Danilo Manzani, Gael Yves Poirier, Marcelo Nalin
Summary: Heavy metal germanate glasses with silver and erbium were prepared using the melt-quenching method. Controlled thermal treatment led to the formation of Ag nanoparticles, which were monitored using in-situ UV-Vis spectroscopy. TEM images showed that Ag nucleation began after 60 minutes and reached an average size of 4.3 nm after 210 minutes. The luminescent properties were influenced by the size of the Ag nanoparticles, as observed through nanoclusters Ag emission and upconversion of Er3+. Overall, the results highlight the importance of controlling the size of Ag nanoparticles for tunable emission in these glasses, suggesting their potential for optical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Multidisciplinary
Rupam Sahoo, Supriya Mondal, Santanu Chand, Arun K. K. Manna, Madhab C. C. Das
Summary: The sensing and monitoring of toxic oxo-anion contaminants in water are important to biological and environmental systems. A hydro-stable SIFSIX metal-organic framework, SiF6@MOF-1, with exchangeable SiF62- anion in its pore is designed and synthesized for selective detection of toxic Cr2O72- oxo-anion in an aqueous medium. The mechanism behind the selective detection is revealed through single-crystal-to-single crystal fashion and density functional theory calculations.
Article
Chemistry, Multidisciplinary
Junru Chen, Xiaojie Chen, Yanyan Liu, Yang Li, Juan Zhao, Zhiyong Yang, Yi Zhang, Zhenguo Chi
Summary: This study successfully reported a single-component luminescent molecule, 3-SPhF, with colorful emissions and investigated various luminescent mechanisms and characteristics in its crystal, expanding the understanding of the regularity of multiple emission centers in single-component compounds with dibenzofuran substituents.
Article
Optics
Yizhi Zhu, Heng Guo, Qiannan Cui, Jinping Chen, Zhuxin Li, Junfeng Lu, Tien-Chang Lu, Zhengchun Peng, Chunxiang Xu, Caofeng Pan
Summary: Manipulating photocarrier dynamics for luminescent materials is of fundamental importance for controlling the luminescent properties of optoelectronic devices. This study demonstrates the enhancement and prolongation of photoluminescence through interfacial engineering, which enables resonant coupling between localized surface plasmon and exciton. The photocarrier dynamics at the interface are mediated by plasmon-induced hot electron transfer (PHET) and plasmon-induced resonant energy transfer (PIRET) processes, which can be actively switched on and off by varying the excitation laser wavelength. These findings are highly significant for actively manipulating photocarrier dynamics in perovskite luminescent devices.
LASER & PHOTONICS REVIEWS
(2023)
Article
Materials Science, Ceramics
Encarnacion G. Villora, Dongsheng Yuan, Kiyoshi Shimamura
Summary: Optical isolators (OIs) are necessary to protect laser sources from back-reflections. Single-crystalline Faraday rotators (FRs) with a large Verdet constant V, such as CeF3, are highly desired to reduce the cost and size of OIs. CeF3 has shown superior performance in terms of transmittance and figure-of-merit compared to the standard Tb3Ga5O12 (TGG), especially in the ultraviolet (UV) wavelength range.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
F. Mousseau, C. Feraudet Tarisse, S. Simon, T. Gacoin, A. Alexandrou, C. I. Bouzigues
Summary: The use of lanthanide-doped nanoparticles as luminescent LFA probes offers higher sensitivity and measurement accuracy for detecting various biomolecules, including enterotoxins. Compared to gold nanoparticle-based LFAs, this method shows at least an order of magnitude improvement in analytical sensitivity and enables simultaneous quantitative detection of multiple biological toxins.
Article
Chemistry, Multidisciplinary
Ke Pei, Shiyang Ji, Mei Zhao, Chunlei Li, Peng Luo, Lang Jiang, Yongsheng Zhao, Tianyou Zhai
Summary: 2D emissive crystals, specifically metal-organic complex crystals such as Ge-TCNQ, have shown great potential for applications in high-performance optical waveguides due to their strong charge-transfer interactions and enhanced optical absorption. The ultrathin Ge-TCNQ crystals synthesized using the in-air sublimation method exhibit a high exciton binding energy and decent photoluminescence efficiency. Spectroscopic analysis of the energy band structure of Ge-TCNQ provides insight into the physical mechanism of the luminescence processes.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Optics
Patrick Pues, Sebastian Schwung, Daniel Rytz, Thomas Juestel
Summary: The research focuses on the use of Y3Al5O12:Ce3+ single crystal as a reference material for photoluminescence spectroscopy and quantum efficiency determination. Garnet crystals, known for their high stability and isotropic optical properties, offer advantages for improved reproducibility and repeatability in optical measurements.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Physical
Zhihua Liu, Yunzhong Zhu, Wenjia Wang, Siwei Long, Shaopeng Lin, Decai Ma, Biao Wang
Summary: Coating different thicknesses of Au nano-films on Tm3+/Yb3+/lithium niobate (LN) single crystal wafers can significantly enhance the luminescence intensity for blue and red emission. The enhancement is attributed to size-dependent localized surface plasmon resonance (LSPR) and manipulation of resonance intensity and enhancement factor by calculating the electron density of Au coating using an analytical optical absorption model.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Chunlei Zheng, Yupeng Zhang, Shuoyan Li, Peijun Zhang, Jinku Yu, Fucheng Zhang
Summary: The formation process of nanocrystalline layer on the rolling contact surface of bainitic steel was investigated. The results reveal that there is a cycle of nanocrystalline layer generation, spalling, and production on the surface. The decrease in the steel surface's elastic modulus indicates the initiation of fatigue damage.
Article
Chemistry, Applied
Xiumian Cao, Jiang Peng, Wenquan Wang, Weiqing Xu, Shuping Xu
Summary: In recent years, there has been a lot of interest in organic single crystals that exhibit both elastic and photoluminescent properties due to their potential applications in various fields. However, there is still a lack of elastic organic crystals that also have two-photon luminescence (2PL) waveguiding properties, which are vital for applications like near-infrared bioimaging and nonlinear optical photonic devices. This study introduces an elastic single crystal called anthracene-9,10-dicarbaldehyde (An-DC) which exhibits reversible bending on its (100) face due to molecular interactions and emits strong fluorescence when excited by blue-violet light. Interestingly, it also demonstrates excellent two-photon fluorescence emission when stimulated by near-infrared light, making it suitable for waveguide applications.
Review
Chemistry, Multidisciplinary
Siwei Li, Peng Miao, Yuanyuan Zhang, Jie Wu, Bin Zhang, Yunchen Du, Xijiang Han, Jianmin Sun, Ping Xu
Summary: Plasmonic nanomaterials coupled with catalytically active surfaces offer unique opportunities for catalysis applications, utilizing surface plasmons to drive various chemical reactions. Recent advances in designing highly efficient plasmonic nanostructures and understanding the underlying mechanisms of surface plasmon have led to significant progress in plasmon-driven photochemical reactions and plasmon-enhanced electrocatalytic reactions. Challenges and future opportunities for plasmonic nanomaterials in the field of energy conversion and storage are also discussed.
ADVANCED MATERIALS
(2021)
Article
Multidisciplinary Sciences
Eva Arianna Aurelia Pogna, Leonardo Viti, Antonio Politano, Massimo Brambilla, Gaetano Scamarcio, Miriam Serena Vitiello
Summary: Through near-field microscopy, researchers have explored the rich physics of layered topological insulators Bi2Se3 and Bi2Te2.2Se0.8, revealing the collective modes dominating the optical response in thin flakes, as well as the propagation of phonon-polariton modes influenced by the topological surface states.
NATURE COMMUNICATIONS
(2021)
Review
Materials Science, Multidisciplinary
Wenchao Xu, Wenjun Huang, Xiujia Wu, Xiangfeng Wei, Fancheng Meng, Jiehua Liu
Summary: Regarding the research on 2D perovskite single crystals, this paper systematically reviews crystal growth methods and their properties, as well as the potential in applications for single-crystal photodetectors.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Fangyuan Cheng, Jie Zhang, Kui Xie
Summary: Introducing pores in single crystals creates porous materials with porosity and structural coherence. In this study, in situ transmission electron microscopy was used to reveal the formation of porosity by converting KTiOPO4 (KTP) single crystals into porous single-crystalline (PSC) TiO2 monoliths. The PSC TiO2 monoliths were formed by the movement of TiO2 clusters with identical lattice orientation on the KTP surface towards the mother phase. The relative density of the PSC TiO2 monoliths determined the porosity, while the macroscopic dimensions remained unchanged. The single-crystalline nature of the porous architecture stabilized oxygen vacancy and enhanced species diffusion. PSC TiO2 monoliths with deposited Pt clusters showed enhanced and stable catalytic CO oxidation in air at 75 degrees C for 200 hours of operation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Applied
Yirui Lu, Lei Yan, Shafqat Hussain, Mengtao Sun, Zhenglong Zhang, Hairong Zheng
Summary: Tip enhanced Raman spectra of AB-stacked bilayer graphene and twisted bilayer graphene nanofragments have been studied. A unique Raman band G(r)(+) is observed and can be tuned by the twisted angle.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Hairegu Tuxun, Zefeng Cai, Min Ji, Baobao Zhang, Chengyun Zhang, Jinping Li, Xudong Yu, Zhengkun Fu, Zhenglong Zhang, Hairong Zheng
Summary: Understanding the heat generation and temperature distribution of plasmonic nanostructures is crucial for various applications. In this study, an optical heating system containing silver nano-islands was designed to investigate the heat generation and temperature distribution. The results showed that the system's temperature could be controlled by changing the excitation power, and the color of upconversion luminescence could be tuned by managing the local temperature.
Article
Optics
Meijuan Sun, Huan Chen, Lei Guo, Baobao Zhang, Xiaohu Mi, Bowen Kang, Zihe Jiang, Xudong Yu, Zhengkun Fu, Zhenglong Zhang, Hairong Zheng
Summary: Rare-earth doped upconversion luminescence plays a significant role in the display and imaging field, but its practical application is limited due to weak luminescence. In this study, a metal-sheet shaped plasmonic nanocavity was introduced to enhance the upconversion processes and achieve directional emission. These findings provide potential applications in ring light sources and bio-imaging.
JOURNAL OF LUMINESCENCE
(2022)
Article
Optics
Baobao Zhang, Xiaojun Guo, Zhenglong Zhang, Zhengkun Fu, Hairong Zheng
Summary: Luminescence thermometry is a unique temperature detection technology that offers remote and noncontact functions. Rare earth doped materials, known for their chemical stability and non-blinking properties, have been widely used in luminescent thermometers. With the rapid advancement of nanoscience and nanotechnology, rare earth doped nanoparticles have emerged as promising candidates for luminescence thermometry, providing high spatial resolution and a wide temperature detection range.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Multidisciplinary
Shali Lin, Xiaohu Mi, Lei Xi, Jinping Li, Lei Yan, Zhengkun Fu, Hairong Zheng
Summary: A Ag-nanoparticles-doped porous ZnO photocatalyst has been prepared and tested for its catalytic activity towards 4-nitrophenol. The heterostructure photocatalyst shows excellent catalytic performance due to the synergetic effect of Ag nanoparticles and porous ZnO.
Article
Chemistry, Multidisciplinary
Xiaohua Wang, Chengyun Zhang, Xilin Zhou, Zhengkun Fu, Lei Yan, Jinping Li, Zhenglong Zhang, Hairong Zheng
Summary: Noble metal nanostructures generate strong surface plasmon resonance in the visible light region, which can promote chemical reactions and serve as photocatalytic materials. The catalytic efficiency and stability of Ag/Au nanoislands and Ag NIs/Au film composite systems were greatly improved compared to Ag NIs. The metal nanoislands also generate localized heat at low temperatures, enabling the transition of NaYF4:Eu3+ to Y2O3:Eu3+ and ensuring the relative stability of the constructed complex.
Article
Chemistry, Multidisciplinary
Chengyun Zhang, Min Ji, Xilin Zhou, Xiaohu Mi, Huan Chen, Baobao Zhang, Zhengkun Fu, Zhenglong Zhang, Hairong Zheng
Summary: All-optical responsive nanomaterials, particularly rare earth oxides, have the potential to be the next-generation memories due to their ability to switch between stable states and their extraordinary luminescent stability. However, the lack of simple and effective optical switches has hindered the realization of all-optical data storage. This study successfully achieved a high-contrast luminescent switching by employing the localized surface plasmon resonance. Furthermore, a self-encrypted all-optical memory with high-sensitivity synaptic response was presented, which can be used for information encryption.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hui Zhang, Xiaohu Mi, Bowen Kang, Yunkai Wu, Tingting Zhang, Pai Liu, Xiaowei Sun, Zhenglong Zhang, Ning Liu, Hongxing Xu
Summary: Colloidal nanocrystals play a significant role in optoelectronic devices and their properties can be improved through ligand modification, which can enhance charge transport and emission characteristics in LEDs.
Article
Chemistry, Physical
Axin Guo, Yirui Lu, Yuhui Song, Yifei Cao, Ruhai Du, Jinping Li, Zhengkun Fu, Lei Yan, Zhenglong Zhang
Summary: The atomic-scale mechanism of plasmon-mediated H-2 dissociation on gold nanoclusters is investigated using time-dependent density functional theory. The position relationship between the nanocluster and H-2 has a strong influence on the reaction rate. The results provide deep insights into the influence of structural symmetry on plasmon-assisted photocatalysis in the quantum regime.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Xilin Zhou, Huan Chen, Baobao Zhang, Chengyun Zhang, Min Zhang, Lei Xi, Jinyu Li, Zhengkun Fu, Hairong Zheng
Summary: The plasmonic photothermal effects of metal nanostructures have gained significant attention in the field of nano-optics. Controllable plasmonic nanostructures with broad response range are crucial for effective photothermal effects and applications. In this study, self-assembled aluminum nano-islands with a thin alumina layer were utilized as a plasmonic photothermal structure for nanocrystal transformation via multi-wavelength excitation. The photothermal effects were found to be controllable by the thickness of Al2O3 and the intensity and wavelength of the laser illumination. Moreover, the Al NIs with an alumina layer exhibited high photothermal conversion efficiency even in low temperature environments and maintained stable efficiency after being stored in air for 3 months. This inexpensive Al/Al2O3 structure with multi-wavelength response provides a promising platform for rapid nanocrystal transformation and wide-band solar energy absorption.
Editorial Material
Chemistry, Multidisciplinary
Zhenglong Zhang
Article
Chemistry, Physical
Yirui Lu, Lei Yan, Huixia Fu, Yuhui Song, Yifei Cao, Sen Li, Ruhai Du, Jinping Li, Zhengkun Fu, Zhenglong Zhang
Summary: The electronic properties of hydrogen-terminated biphenylene (BP) segments of different sizes on the sub-nanoscale are explored, and the energy gap is observed to follow a linear relationship with the hydrogen-to-carbon ratio of the segments.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Yirui Lu, Lei Yan, Sichen Huang, Xilin Zhou, Min Zhang, Ruhai Du, Zhenglong Zhang
Summary: The length dependence of Raman spectra and vibrational properties of biphenylene strips was investigated using density functional theory. It was found that the Raman intensity of two bands increases or decreases with length due to changes in the proportion of effective vibrating units. Additionally, the vibrational modes showed a red shift with increasing length, and a linear relationship between energy gap and wavenumber of the shifting Raman bands was observed. These findings provide insights into the length dependence of Raman spectra and suggest the potential use of Raman spectroscopy for determining the energy gap of nanomaterials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Baobao Zhang, Ting Kong, Chengyun Zhang, Xiaohu Mi, Huan Chen, Xiaojun Guo, Xilin Zhou, Min Ji, Zhengkun Fu, Zhenglong Zhang, Hairong Zheng
Summary: This study demonstrates the rapid transformation of nanocrystals in cryogenic environments using the plasmon thermal effect, shedding light on crystal transformation and growth in extreme conditions.