http://scholars.ntou.edu.tw/handle/123456789/214 Tue, 11 Aug 2026 07:18:47 GMT 2026-08-11T07:18:47Z https://scholars.ntou.edu.tw:443/retrieve/96/光電與材料科技學系.png http://scholars.ntou.edu.tw/handle/123456789/214 http://scholars.ntou.edu.tw/handle/123456789/26790 標題: Enhanced therapeutic effect of chemotherapy with magnetic mesoporous silica nanoparticle-mediated synergistic hyperthermia therapy 作者: Lee, Cheng-Chang; Lin, Yuan-Ting; Huang, Kai-Qun; Hwang, Jih-Shang; Lin, Hsiu-Mei 摘要: This research combined chemotherapy and magnetic hyperthermia therapy in a nano-drug delivery system based on mesoporous silica. The material exhibited dual imaging ability by adding Eu3+ ions to the silica framework with an iron oxide core, including IVIS and T2 MRI. By further grafting temperature-sensitive polymers acting as gatekeepers, the chemo drug camptothecin (CPT) was caged inside the pore until the temperature increased to 42 degrees C due to the magnetic hyperthermia effect. Moreover, tumor cells overexpress the folic acid (FA) receptor due to the need for FA molecules during their growth. It is promising that by grafting FA onto nanoparticles, tumor cells take up more material, which increases the specificity of the nanoparticles. MMSN-Eu-PEGMA-FA@CPT was successfully taken up by A549 cells, as observed with confocal laser scanning microscopy (CLSM), and exhibited great inhibition of cancer cell A549 growth. At a concentration of 25 & micro;g mL-1 under AMF, the cell viability of A549 cells was 56.2%. This is due to the synergistic effect of chemotherapy and hyperthermia therapy. Thu, 01 Jan 2026 00:00:00 GMT http://scholars.ntou.edu.tw/handle/123456789/26790 2026-01-01T00:00:00Z http://scholars.ntou.edu.tw/handle/123456789/26752 標題: Effects of substrate temperature and substrate holder rotation speed on the characterization of (TiZrHfCr)Bx films 作者: Chen, Yung-, I; Ye, Yu-Ting; Lu, Guan-Ting; Chang, Li-Chun 摘要: (TiZrHfCr)Bx thin films were fabricated using HfB2, ZrB2, CrB2, and Ti targets in a magnetron cosputtering system onto Si wafers and SUS304 substrates. A Ti interlayer was employed to enhance the adhesion between the film and the substrate. The first batch (T batch) of (TiZrHfCr)Bx films was fabricated at substrate temperatures of 60, 200, 300, and 400 degrees C, with the substrate holder rotation speed fixed at 30 rpm. The second batch (R batch) of films was deposited at substrate holder rotation speeds of 5, 10, 15, and 30 rpm, with a substrate temperature of 400 degrees C. In the T batch, the B/(Ti + Zr + Hf + Cr) ratio of the (TiZrHfCr)Bx films varied from 1.47 to 1.39, the hardness values increased from 21.1 to 26.7 GPa, and the elastic modulus increased from 263 to 286 GPa as the substrate temperature was increased from 60 to 400 degrees C. The mechanical properties increased with increasing substrate temperature, attributed to film densification; however, the films' low stoichiometry limited the enhancement in mechanical properties. In the R batch, the hardness increased from 26.7 to 29.1 GPa, and the elastic modulus increased from 286 to 313 GPa, as the substrate holder rotation speed decreased from 30 to 5 rpm. The formation of nanoscale cyclic gradient concentrations raised the mechanical properties. The XRD analysis revealed that all the films exhibited a near-amorphous structure ascribed to under-stoichiometric compositions. Scratch test results indicated that the R5 sample, prepared at 400 degrees C with a substrate holder rotation speed of 5 rpm, exhibited the highest LC3 critical load of 41.3 N. In the wear tests, the R15 film exhibited the highest wear resistance, whereas the R10 film, under tensile stress, showed reduced wear resistance. Thu, 01 Jan 2026 00:00:00 GMT http://scholars.ntou.edu.tw/handle/123456789/26752 2026-01-01T00:00:00Z http://scholars.ntou.edu.tw/handle/123456789/26753 標題: Interplay of elemental configuration and graphene support in high-entropy spinel oxides for oxygen electrochemical reactions 作者: Liang, Yuan-Chang; Jung, Hao 摘要: In this study, high-entropy spinel oxides, including (Fe0.2Co0.2Ni0.2Cr0.2Zn0.2)3O4, (Fe0.15Co0.15-Ni0.15Cr0.275Zn0.275)3O4, and (Fe0.25Co0.25Ni0.25Cr0.125Zn0.125)3O4, were synthesized using a solvothermal annealing method, and graphene-supported samples were subsequently prepared. Structural characterization confirmed the formation of a single-phase cubic spinel structure with homogeneous elemental distribution. X-ray photoelectron spectroscopy revealed composition-dependent differences in metal valence states and oxygen vacancy contents. Among the samples, (Fe0.25Co0.25Ni0.25Cr0.125Zn0.125)3O4 exhibited the highest oxygen vacancy fraction (32.2%) among the compositions. The introduction of graphene was associated with improved particle dispersion and electrical conductivity. Electrochemical measurements showed that the (Fe0.25Co0.25-Ni0.25Cr0.125Zn0.125)3O4 with 10 wt% graphene catalyst required an overpotential of 268 mV to reach a current density of 10 mA cm-2 for the oxygen evolution reaction, and exhibited a relatively large electrochemical surface area and lower charge-transfer resistance. Stability tests indicated that 93% of the initial OER current density and 91.7% of the oxygen reduction reaction current density were retained. This work presents a systematic investigation of composition and graphene support effects on the electrocatalytic behavior of High-entropy spinel oxides. Thu, 01 Jan 2026 00:00:00 GMT http://scholars.ntou.edu.tw/handle/123456789/26753 2026-01-01T00:00:00Z http://scholars.ntou.edu.tw/handle/123456789/26749 標題: Surface passivation using organic dipole rotation enables 40.9 % indoor efficiency in perovskite solar cells 作者: Shi, Zhong-En; Chandel, Anjali; Cheng, Ta-Hung; Lung, Chien-Yu; Jiang, Bing-Huang; Hsiao, Yu-Sheng; Yu, Yang-Yen; Chang, Sheng-Hsiung; Chen, Chih-Ping 摘要: Background: The strategy of passivating interfacial defects in perovskite solar cells (PSCs) has recently attracted significant attention for its demonstrated potential to enhance device performance. Selecting perovskite materials with optimal bandgaps and low defect densities is crucial for maximizing photon absorption, reducing recombination losses, and achieving superior power conversion efficiencies (PCE) under indoor lighting conditions. Method: In this study, we presented a p-i-n PSC introduced 2-phenylethylamine hydroiodide (PEAI) as a multifunctional passivator. Atomic-force microscopy (AFM) images, X-ray diffraction (XRD) patterns, photoluminescence (PL) spectra, time-resolved PL curves, and Raman scattering spectra collectively reveal that both pre-treatment and post-treatment with PEAI play a critical role in the formation of merged perovskite grains and controlling the rotation of organic dipoles in the upper portion of the perovskite layers. Significant findings: The merged grains, with defect passivation facilitated by PEAI, significant enhanced the performance of the inverted Cs0.18FA0.82PbI3 PSC, boosting its efficiency from 16.51 % to 20.98 % under one-sun illumination. The optimized strategy demonstrated remarkable results in wide-bandgap perovskites, achieving an impressive performance of 40.9 % under indoor 3000 K LED lighting, with a fill factor of 81.3 +/- 0.1 %. These findings highlight a promising avenue for advancing the photovoltaic performance of formamidinium-based PSCs under both standard sunlight and indoor lighting conditions. Thu, 01 Jan 2026 00:00:00 GMT http://scholars.ntou.edu.tw/handle/123456789/26749 2026-01-01T00:00:00Z