Article
Chemistry, Physical
Marta Zaborowska, Weronika Smok, Tomasz Tanski
Summary: The main goal of this study was to produce ceramic nanofibers by electrospinning and thermal treatment, and investigate the effect of calcination temperature on the properties of zirconia nanostructures. The nanofibers showed a crystalline structure with monoclinic and tetragonal phases. The optical band gap was found to be 4.9 eV and 5.6 eV for samples calcined at 500 and 600 degrees C, respectively. The nanofibers with lower energy gap and higher specific surface area exhibited significant photocatalytic activity.
APPLIED SURFACE SCIENCE
(2023)
Article
Physics, Multidisciplinary
Hamid Esfahani, Nikou Khoshnoodan
Summary: This study focused on the electro-optical properties of mono and multilayer Al-doped ZnO (AZO) thin films (TFs) fabricated using the electrospinning method. The results showed that with the increase in the number of layers, the thickness and opacity of the films increased, while the optical band gap also increased.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Polymer Science
Hannah A. Lacy, Vera Jencova, Sarka Hauzerova, Andrei Stanishevsky
Summary: Nanofibers made from blending natural and synthetic biopolymers have shown potential for better mechanical stability, ECM morphology mimicry, and cellular interaction. This study focuses on AC-electrospinning of poorly miscible blends of gelatin and polycaprolactone, and the results demonstrate the effect of the blend ratio on wettability, crystallinity, and structure. Preliminary in vitro tests confirm favorable cell attachment, proliferation, and spreading on the nanofibrous meshes.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yan Chen, Ao Li, Xiuli Fu, Zhijian Peng
Summary: The study successfully prepared novel (N,F)-co-doped TiO2-delta nanofibers and demonstrated their excellent photocatalytic ability in degrading environmental pollutants under visible light irradiation.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Biochemistry & Molecular Biology
Fahad A. AlAbduljabbar, Sajjad Haider, Fekri Abdulraqeb Ahmed Ali, Abdulaziz A. Alghyamah, Waheed A. Almasry, Raj Patel, Iqbal M. Mujtaba
Summary: A PAN nanofibers composite membrane with TiO2 nanoparticles was successfully prepared and characterized in terms of structure, morphology, and performance, showing enhanced photocatalytic activity against methyl orange dye degradation.
Article
Chemistry, Physical
Yunjiang Yang, Anping Wu, He Bai, Jinrong Bao, Wenxian Li, Ying Liu
Summary: In this study, uniform LaPO4:Eu one-dimensional nanofibers were successfully synthesized via the electrospinning method, with fiber diameter and surface area controllable by adjusting the PVP content. The photoluminescence efficiency of LaPO4:Eu nanofibers was found to be significantly influenced by the BET surface area.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Yu Yang, Changzhao Chen, Xin Wang
Summary: This research aims to study the influence of Ce-doped SnO2 nanocrystals on oxygen vacancy defects. The results show that the Ce doping concentration affects the distribution of Ce3+/Ce4+ ions and the occurrence of CeO2 impurity phase. The optimum doping concentration is 6 at.%, which corresponds to the maximum oxygen vacancy concentration. Furthermore, the band gap narrowing effect and enhanced emission indicate the potential of Ce-doped SnO2 in designing visible light responsive SnO2 based optoelectronic materials.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Multidisciplinary
Mahelaqua A. Haque, Mahejabeen Azizul Haque, Subhash B. Kondawar
Summary: Novel europium doped strontium yttrate nanofibers were synthesized by electrospinning and their thermal behavior, structural features, and photoluminescence properties were investigated. The results showed that SrY2O4:Eu3+ nanofibers exhibit stable thermal behavior, optimal emission intensity at a certain dopant concentration, and concentration quenching at higher concentrations.
MATERIALS TODAY COMMUNICATIONS
(2022)
Review
Materials Science, Multidisciplinary
Shikun Zhao, Zhen Qin, Shun Gong, Lizheng Qin, Biao Zhao, Qi Guo, Kai Pan
Summary: White light emitting nanofibers (WLENFs) are fantastic luminescent materials with high specific surface area, light weight, thinness, excellent flexibility, and air permeability. Electrospinning is a mature technology for fabricating nanofibers and has been widely applied, creating unprecedented functional materials like WLENFs with great potential for high performance in the future.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Multidisciplinary Sciences
Muhammad Asghar Khan, Muhammad Farooq Khan, Shania Rehman, Harshada Patil, Ghulam Dastgeer, Byung Min Ko, Jonghwa Eom
Summary: The electrical and optical properties of transition metal dichalcogenides (TMDs) can be effectively modulated by tuning their Fermi levels. Researchers have found that p-type MoTe2 can be changed to n-type by charging a hexagonal boron nitride (h-BN) substrate through the application of a writing voltage using a metal gate under deep ultraviolet light. By applying different writing voltages, the transition rate to n-type can be controlled. Furthermore, a p-n diode was fabricated, which exhibited a high rectification ratio.
SCIENTIFIC REPORTS
(2022)
Article
Nanoscience & Nanotechnology
Alina Valimukhametova, Conor Ryan, Thomas Paz, Fabian Grote, Anton Naumov
Summary: Graphene oxide (GO) is a promising nanomaterial for optoelectronic applications due to its fluorescence and beneficial physical properties. While other graphene derivatives are possible, GO remains the most heavily used. This study explores different graphene derivatives and their optical properties, proposing a unified model for optical emission. The research suggests that graphene derivatives have minimal dependence on functional groups for their optical properties, indicating potential for use in research and industry.
Article
Optics
M. Dutta, J. M. Kalita, G. Wary
Summary: The optical absorption and emission features of Eu doped Y2O3 nanoparticles synthesized by a gradually-heated solution combustion method were investigated in this study. The samples exhibited an increase in crystallite size and optical band gap after doping with Eu. The primary emission band was composed of two overlapping components attributed to the transition from degenerate 5d -> 4f level of Eu2+ ion.
Article
Chemistry, Physical
Pawan Kumar, Devender Singh, Isha Gupta
Summary: Combustion derived Gd1-xSr2AlO5:x mol% Eu3+ (x = 1-5 mol%) nanophosphors with tetragonal structure and space-symmetry of I4/mcm (space group no. 140) were successfully synthesized and characterized. The doping of Eu3+ ions resulted in expanded lattice constants/volume and shifted diffraction peaks, as confirmed by X-ray diffraction and Rietveld refinement. The nanophosphors exhibited excellent morphology with almost spherical particles in nanoscale, as observed by SEM and TEM. The optimized doping concentration of Eu3+ ions was determined to be 3 mol%, showing good optical properties and thermal stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Daniela Santos, Rosa M. F. Baptista, Adelino Handa, Bernardo Almeida, Pedro V. Rodrigues, Ana R. Torres, Ana Machado, Michael Belsley, Etelvina de Matos Gomes
Summary: This work presents the fabrication of hybrid systems based on chiral cyclic dipeptide L-Tryptophan-L-Tryptophan incorporated into biopolymer electrospun fibers. The micro/nanofibers contain self-assembled nano-spheres embedded into the polymer matrix, exhibiting wide-band gap semiconductors with a 4.0 eV band gap energy, blue photoluminescence, and significant piezoelectric and pyroelectric properties. These hybrid mats have potential applications in thermal sensing and energy harvesting.
Article
Chemistry, Multidisciplinary
Hao Xu, Wei Zhu, Mingliang Tang, Xiangyuan Wang, Yin Zhang
Summary: This study investigated a multi-component oxide glass consisting of 50B(2)O(3)-(25-x)Al2O3-10Na(2)O-xBi(2)O(3)-15CaF(2)-0.5Dy-0.5Eu (x = 0 , 5 , 10 , 15 , 20 , 25 mol%). The fluoroborate glass exhibited non-crystallinity, as confirmed by X-Ray diffraction. FTIR spectra revealed the structural properties of the glass, characterized by the stretching and vibrating groups of various boric groups. The optical band gap measurements confirmed the presence of unbridged oxygen (NBOs) in the glass samples. The refractive index of the fluoroborate glass increased with the Bi2O3 content, and the glass exhibited strong emission in the blue, yellow, and red range. The emission spectra were analyzed to calculate chromaticity coordinates, color temperature, color rendering index, and color purity. By adjusting the Bi2O3 content and excitation wavelength, the glass was able to emit white light, making it suitable for white light-emitting diodes (WLEDs).
MATERIALS TODAY CHEMISTRY
(2022)
Editorial Material
Chemistry, Multidisciplinary
Chia-Rong Lee, Dan Luo, Zhigang Zheng, Corrie T. Imrie
Article
Materials Science, Multidisciplinary
Shun-An Jiang, Jia-Lun Chang, Jyun-Wei Lin, Yan-Song Zhang, Ting-Shan Mo, Jia-De Lin, Chia-Rong Lee
Summary: This study demonstrates a near-full-color tunable chiroptical electrothermochromic device using a supramolecular chiral photonic material FLC-CLC, which can be electrically tuned over the entire visible region with high color performance at near room temperature. The study also shows two potential low-voltage tunable applications, a broadband tunable laser and a near-full-color tunable coaxial microfibric textile, based on electrothermochromic FLC-CLC materials.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Physical
Yan-Song Zhang, Chia-Lien Ma, Vladimir Yu Rudyak, Shun-An Jiang, Sergey A. Shvetsov, Jia-De Lin, Chia-Rong Lee
Summary: Liquid crystals are distinctive materials applicable to various disciplines, with diverse structures and topological defects affected by factors such as nematic elasticity and surface anchoring. This study investigates the interaction between cholesteric LC microdroplets and microfibers, revealing different surface anchoring modes and morphological evolution under temperature and light control. The externally controllable LC structures open up possibilities for applications in fields such as topological remote control, nanoscience, and biomedical research.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Wei-Fan Chiang, Shih-Xuan Lin, Yong-Xuan Lee, Yu-Han Shih, Jih-Hsin Liu, Harry-Miyosi Silalahi, Chia-Rong Lee, Chia-Yi Huang
Summary: The thickness of the liquid crystal (LC) layer plays a crucial role in its terahertz birefringence, with both too thick and too thin layers resulting in small birefringence. Research shows that at a specific thickness, the LC layer can exhibit a significant terahertz birefringence.
Article
Materials Science, Multidisciplinary
Wei-Fan Chiang, Yu-Yun Lu, Yin-Pei Chen, Xin-Yu Lin, Tsong-Shin Lim, Jih-Hsin Liu, Chia-Rong Lee, Chia-Yi Huang
Summary: Liquid crystal cells coated with metamaterials were fabricated, with experimental results showing an increase in resonance frequencies with a specific angle, demonstrating potential as passively tunable terahertz filters.
Article
Nanoscience & Nanotechnology
Shun-An Jiang, Chien-Hsiang Wang, Yan-Song Zhang, Ting-Shan Mo, Shuan-Yu Huang, Xiang-Lin Hsieh, Yu-Jun Wong, Jia-De Lin, Chia-Rong Lee
Summary: This study demonstrates the formation of large-area disordered two-dimensional microgrid chiral structures in cholesteric liquid crystal systems due to photopolymerization-induced Helfrich deformation effect. It shows that a one-dimensional UV-laser interference field can be used to effectively control the orderliness of the postformed 2D microgrid structure over a large exposed area. By exploring factors such as CLC pitch, angle, and intensity of interfering laser beams, this research provides insights into manipulating and improving the orderliness of periodic micro/nanostructures in self-organized supramolecular systems.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Shun-An Jiang, Chia-Chun Lai, Yan-Song Zhang, Jia-De Lin, Wei-Chun Lin, Xiang-Lin Hsieh, Chia-Rong Lee
Summary: New optical-photonic devices that can manipulate light characteristics dynamically are crucial for modern and future optics development. Optical vortex with spiral wave surfaces, which possess intrinsic orbital angular momentum, can be applied in advanced optics like optical tweezers, ultra-resolution microscopes, optical communication, and quantum technology. The study presents a Bragg-Berry optical vortex generator (BBOVG) made of a circularly symmetric chiral photonic structure using a simple method, demonstrating the manipulation of reflective optical vortices with opposite OAM signs in the visible range near room temperature.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Yan-Song Zhang, Hung-Sheng Weng, Shun-An Jiang, Ting-Shan Mo, Po-Chih Yang, Jia-De Lin, Chia-Rong Lee
Summary: The study demonstrates the platform for creating smart devices using light- and heat-responsive beads, showcasing their applicability in advanced optomechanical integrated microsystems and multiresponsive Fabry-Perot resonators.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Crystallography
Yi-Hong Shih, Xin-Yu Lin, Harry Miyosi Silalahi, Chia-Rong Lee, Chia-Yi Huang
Summary: The study demonstrated the fabrication of an optically tunable terahertz filter using a metasurface-imbedded liquid crystal cell with photoalignment layers. Experimental results showed an increase in resonance frequency of the metasurface in the cell with the LC director angles, and a frequency tuning region of 15 GHz was achieved. Simulated results indicated the resonance frequency shift was due to the birefringence of the LC, with a value of 0.13 in the terahertz region. This optically tunable terahertz filter has potential applications in terahertz telecommunication, biosensing, and terahertz imaging.
Article
Nanoscience & Nanotechnology
Yan-Song Zhang, Zhi-Qun Wang, Wei-Cheng Chuang, Shun-An Jiang, Ting-Shan Mo, Jia-De Lin, Chia-Rong Lee
Summary: This study focuses on the dynamic control of motion at the molecular level to promote programmable modulation of sophisticated self-organized superstructures. By utilizing solar renewable energy, the spectral position and handedness of a photonic superstructure can be continuously and reversibly tuned. Advanced photoresponsive chiroptical devices have potential to replace traditional elements with their ecofriendly characteristics, fast response, stability, and high efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Polymer Science
Yan-Song Zhang, Zhi-Qun Wang, Jia-De Lin, Po-Chih Yang, Chia-Rong Lee
Summary: This paper presents a freestanding film based on cholesteric liquid crystal networks, which can transform a 2D flat plane into a 3D nanometer-scale topography through light switching to control the wettability of the surface.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Crystallography
Yi-Hong Shih, Harry Miyosi Silalahi, Ting- Tsai, Yi-Chen Chen, Jou-Yu Su, Chia-Rong Lee, Chia-Yi Huang
Summary: A terahertz metasurface embedded in a dye-doped liquid crystal cell was fabricated, serving as an optically tunable and thermally erasable terahertz intensity modulator. Irradiation of the pump beam reduces transmittance and heating removes adsorbed dye molecules, indicating potential applications in terahertz imaging, telecommunication, and information encryption.
Article
Crystallography
Jia-De Lin, Po-Chen Wu, Ting-Shan Mo, Bing-Yau Huang, Chie-Tong Kuo, Chia-Rong Lee
Summary: This study demonstrates controllable random lasing emissions in a dye-doped nematic liquid crystal (DDNLC)-infiltrated microcapillary, where the emission wavelength can be adjusted by changing the focusing position of the pumped pulses. By doping azo-dyes in the DDNLC, optical controllability of the lasing intensity and wavelength can be further achieved, enabling potential applications in multicolor emitting sources, vibration sensors, and UV sensors.
Article
Chemistry, Multidisciplinary
Yan-Song Zhang, Zhi-Wei Lin, Hui-Chen Yeh, Chi-Min Liang, Jia-De Lin, Po-Chih Yang, Chia-Rong Lee
Summary: This study demonstrates a sandwich-film laser composed of photomechanical deformable azobenzene cholesteric LC elastomer (CLCE) PhC layers and an isotropic gain interlayer, which can quickly adjust the emission direction through UV irradiation. This flexible, portable, and durable laser system with controllable beam-steering is envisioned to have wide applications in autonomous vehicles, self-sustaining machines, and optical devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yan-Song Zhang, Shun-An Jiang, Jia-De Lin, Po-Chih Yang, Chia-Rong Lee
Summary: Three-dimensional photonic crystal is a promising material with significant impact on scientific development in various future technologies. Blue phase liquid crystal has shown potential in fundamental studies and technological applications, but environmental stability remains a challenge. The fabrication of stretching-tunable blue phase elastomer photonic bandgap free-standing films demonstrates excellent performance characteristics and wide application prospects.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Abu Talha Aqueel Ahmed, Sankar Sekar, Shubhangi S. Khadtare, Nurul Taufiqu Rochman, Bathula Chinna, Abu Saad Ansari
Summary: In this study, MnCo2S4 nanosheet catalyst was successfully synthesized and found to exhibit superior performance in hydrogen evolution. Compared to MnCo2S4, MnCo2S4 showed low overpotentials, moderate Tafel slope, and excellent sustainability. The outstanding performance can be attributed to the increased number of electrochemically active sites and enhanced electronic conductivity on the catalyst surface.
Article
Chemistry, Multidisciplinary
Victor V. Maltsev, Elena A. Volkova, Elizaveta V. Koporulina, Diana D. Mitina, Vladimir L. Kosorukov, Anna I. Jiliaeva, Daniil A. Naprasnikov, Konstantin N. Gorbachenya, Viktor E. Kisel
Summary: The phase relationships, crystal properties and luminescence kinetics of two complex systems were studied, including unit cell parameters, segregation coefficients of impurities, and lifetimes of energy levels.
Article
Chemistry, Multidisciplinary
Xiaoman Zhang, Wangwang Xu, W. J. Meng, Andrew C. Meng
Summary: This study successfully grew high-quality single crystal AlScN nanowires through ultra-high vacuum reactive sputtering technique and characterized their structure and properties. The nanowires exhibit significantly reduced mosaic spread and predominantly single ferroelectric domains, as well as a high piezoelectric constant.
Article
Chemistry, Multidisciplinary
Tom E. de Vries, Elias Vlieg, Rene de Gelder
Summary: Networks are important for describing relationships between people, roads between cities, reactions between chemicals, and other interactions. Bipartiteness, dividing the network into two groups, can facilitate the study of the network's structure. We have developed an algorithm that can find a near-optimal bipartisation within a reasonable time frame and used it to uncover the hidden structure of the CSD cocrystal network.
Article
Chemistry, Multidisciplinary
Chuchu Han, Jing Yang, Xin Zhang, Aisen Li, Jiang Peng
Summary: An elastic crystal based on a photo-reactive acylhydrazone derivative is reported, which exhibits reversible bending behavior under UV irradiation and heating. The crystal undergoes reversible E<->Z isomerization under light and heating conditions. The crystal demonstrates excellent elastic properties and the bending can be controlled to control the output direction of red light.
Article
Chemistry, Multidisciplinary
Lingfeng Zhang, Yu Wang, Yefeng Wang, Shuai Liu, Na Zhang, Mingmin Yang, Haixia Ma, Zhaoqi Guo
Summary: This study designs and synthesizes a series of high-energy salts compounds without heavy metal ions and azide groups. The molecular structures and stability of the compounds are confirmed through single-crystal X-ray diffraction and intermolecular interaction analysis. Furthermore, the thermal stability, energetic properties, and electrical initiation properties of the compounds are investigated, suggesting their potential as primary explosives.
