Article
Materials Science, Ceramics
Yaqi Zhu, Jian Yang, Mingwei Wang, Yangqi Meng, Rongyun Jiang, Hancheng Zhu, Duanting Yan, Chunguang Liu, Changshan Xu, Yuxue Liu
Summary: In this study, spinel-phase Zn2Ga3-xFex3+Ge0.75O8 and Zn2Ga2.98-xFex3+Cr0.02Ge0.75O8 nanoparticles were prepared by one-step hydrothermal method in combination with vacuum annealing. Fe3+ doping influences the generation of (Ga-Zn(0) -Zn'(Ga)) defects and the afterglow time. NIR persistent luminescence can be observed in Fe3+ and Cr3+ co-doped ZGGO nanoparticles, with a longer afterglow time. ZGGO: Cr3+, Fe3+ nanoprobes show potential applications in autofluorescence-free imaging and MRI.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Maria Rapp, Yaiza Lozano, Miguel Fernandez-Ramos, Josefa Isasi, Mauricio Alcolea Palafox
Summary: This article describes the preparation and analysis of new magnetic-fluorescent bifunctional nanocomposites. The study reveals the dependence of magnetic and optical properties on the silica coating thickness and the contact between fluorescent samples and magnetic powder.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Multidisciplinary Sciences
N. A. Usov, R. A. Rytov, V. A. Bautin
Summary: Detailed calculations of the specific absorption rate (SAR) of dilute iron oxide nanoparticles with effective uniaxial anisotropy dispersed in a liquid were performed, showing different behaviors depending on particle diameters and the alternating magnetic field, with the relationship to viscosity being dependent on nanoparticle size. The behavior of SAR was explained by viscous and magnetic oscillation modes, with SAR practically independent of viscosity in the magnetic mode.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Fluids & Plasmas
Anna Yu Solovyova, Ekaterina A. Elfimova, Alexey O. Ivanov
Summary: Research shows that orienting ferroparticle suspensions can enhance magnetic properties, with the effect intensifying with the growth of nanoparticle magnetocrystalline anisotropy. This provides an effective way to improve magnetic response in magnetic soft materials.
Article
Materials Science, Ceramics
Ishant Kumar, Avinash Kumar, Sandeep Kumar, Himani Thakur, Naresh Dhiman, Arvind K. Gathania
Summary: In this study, Er3+-activated ZrO2 was synthesized and its bifunctional utility for solid-state lighting and non-contact optical thermometry was demonstrated. The synthesized samples were characterized using various techniques and the concentration quenching effect and temperature-sensing capability were analyzed. The results showed that n-UV-triggered Er3+ doped ZrO2 can be a promising material for both solid-state lighting and non-contact optical thermometry applications.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Weiguang Ran, Guangshi Sun, Xiaoli Ma, Liyun Zhang, Jae Su Yu, Hyeon Mi Noh, Byung Chun Choi, Jung Hyun Jeong, Tingjiang Yan
Summary: A synthesis technique was used to successfully create Sm3+ and Bi3+ co-doped La3BWO9 phosphors, which exhibit high emission intensity and sensitive temperature sensing properties. By optimizing the doping concentrations, the luminescence properties were enhanced, indicating potential applications as solid state lighting materials and optical temperature sensors.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Bing Wang, Yi Liu, Ying Song, Li-Jian Guo, Jin-Jin Cao, Wen-Hong Li, Ting Liu, Sen Qiao, Li-Da Guo
Summary: A new heterometallic compound has been successfully synthesized and characterized, featuring a complex 3D framework and exhibiting intense luminescence at room temperature, as well as excellent photocatalytic activity for the degradation of methyl blue (MB) under xenon arc lamp irradiation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Yolimar Gil, Ricardo Costa de Santana, Andres Vega, Daniel Aravena, Evgenia Spodine
Summary: This work investigates the chemical and luminescent properties of a novel complex containing a distorted macrocyclic ligand. The magnetic-structural analysis and ab initio calculations reveal that the distortion of the macrocycle leads to a symmetric environment, allowing for field-induced single-molecule magnet behavior and efficient energy transfer to the emissive state of the Dy-III ion.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Vuong Thanh Tuyen, Bui Q. V. Huy, Nguyen Ba Tong, Tran Thi Ngoc Lam, Maurizio Ferrari, Cao Thi My Dung, Ung Thi Dieu Thuy, Tran T. T. Van
Summary: In this study, hexagonal NaYF4:Tm, Yb upconversion phosphors with excellent UC luminescence quantum efficiency and chemical stability were synthesized using a hydrothermal method. The UC phosphors became hydrophilic through surface oxidation, and the crystal phases and luminescence properties were controlled by changing the Yb doping concentration. The findings suggest that these phosphors have potential applications in anti-counterfeiting and biological fields.
Article
Chemistry, Multidisciplinary
Alexandra Schroter, Thomas Hirsch
Summary: Near-infrared light combined with lanthanide-based nanoparticles has great potential for diagnostic and therapeutic applications in biomedicine. Significant progress has been made in the synthesis of nanoparticles with complex architectures. This article provides an overview of recent design trends, highlights past achievements, and outlines potential future directions in upconversion research.
Article
Materials Science, Multidisciplinary
Kamila Zhumanova, Nursalim Akhmetzhanov, Moon Sung Kang, Anara Molkenova, Iruthayapandi Selestin Raja, Ki Su Kim, Dong-Wook Han, Timur Sh. Atabaev
Summary: In this study, it was found that the luminescent properties of terbium-doped silica nanoparticles can be improved through barium codoping, with a significant increase in quantum yield. This method has the potential to enhance the optical characteristics of silica-based nanoparticles.
Article
Multidisciplinary Sciences
Praveen Kumar Litoriya, Swati Kurmi, Ashish Verma
Summary: The Sr1-xAl2O4:Eu-x phosphor with different compositions were synthesized and characterized in this study. The XRD analysis confirmed the single phasic structure of the phosphor. FTIR technique was used to study the oxide formation, and UV-Visible spectroscopy was employed to determine its optical band gap. SEM, TEM, and EDX techniques were used to analyze the morphology, elemental composition, and nano size of the phosphor particles. The photo-luminescence study revealed that the Sr1-xAl2O4:Eu-x phosphor with x=0.05 exhibited the highest emission intensity with green light.
SCIENTIFIC REPORTS
(2023)
Article
Nanoscience & Nanotechnology
Sang-Hyeon Lee, Minsu Kang, Hyejin Jang, Stalin Kondaveeti, Kahyun Sun, Somi Kim, Hyun-Ha Park, Hoon Eui Jeong
Summary: In this study, a scalable bifunctional surface with excellent antifogging and antibiofouling properties is proposed. The surface integrates eco-friendly and bio-friendly materials with nanoscale architectures, exhibiting enhanced water absorption and spreading properties for antifogging performance, as well as notable resistance against biofilm formation.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Lin Zhang, Yantao Li, Huiru Ye, Lei Zhao, Qingwei Song, Weidong Du, Xukai Chen, Wei Wei
Summary: In this study, we report the concentration-quenching-free properties of the 406 nm emission in Pr3+-doped nanoscintillators, which is due to the large energy gap between the S-1(0) and I-1(6) states of Pr3+ ions. This work provides further understanding of the concentration quenching effect in lanthanide-doped luminescent nanomaterials and offers a new perspective for avoiding detrimental concentration quenching. Additionally, we demonstrate the potential use of Pr3+-doped nanoscintillators as anti-counterfeiting materials.
CHEMICAL COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
A. M. Youssef, S. M. Yakout
Summary: Tetra-doping by (Mn, Fe, Co, Ni) ions significantly enhanced the dielectric constant and ferromagnetic-superparamagnetic characteristics of monoclinic CuO structure. Nanocompositions of undoped CuO and CuO doped with various concentrations of (Mn, Fe, Co, Ni) ions were synthesized. The crystal structure analysis confirmed the pure single phase monoclinic CuO structure in all samples. The tetra-doping process resulted in the formation of homogeneous spherical nanoparticles and altered the optical properties of CuO.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
