keyword
https://read.qxmd.com/read/38530641/topological-quantum-well-states-in-pb-sb-thin-film-heterostructures
#21
JOURNAL ARTICLE
Yao Li, Yang-Hao Chan, Joseph A Hlevyack, John W Bowers, Mei-Yin Chou, Tai-Chang Chiang
Composite topological heterostructures, wherein topologically protected states are electronically tuned due to their proximity to other matter, are key avenues for exploring emergent physical phenomena. Particularly, pairing a topological material with a superconductor such as Pb is a promising means for generating a topological superconducting phase with exotic Majorana quasiparticles, but oft-neglected is the emergence of bulklike spin-polarized states that are quite relevant to applications. Using high-resolution photoemission spectroscopy and first-principles calculations, we report the emergence of bulk-like spin-polarized topological quantum well states with long coherence lengths in Pb films grown on the topological semimetal Sb...
March 26, 2024: ACS Nano
https://read.qxmd.com/read/38530201/revealing-the-kinetic-phase-behavior-of-block-copolymer-complexes-using-solvent-vapor-absorption-desorption-isotherms
#22
JOURNAL ARTICLE
Nayanathara Hendeniya, Caden Chittick, Kaitlyn Hillery, Shaghayegh Abtahi, Curtis Mosher, Boyce Chang
Controlling the self-assembled morphologies in block copolymers heavily depends on their molecular architecture and processing conditions. Solvent vapor annealing is a versatile processive pathway to obtain highly periodic self-assemblies from high chi (χ) block copolymers (BCPs) and supramolecular BCP complexes. Despite the importance of navigating the energy landscape, controlled solvent vapor annealing (SVA) has not been investigated in BCP complexes, partly due to its intricate multicomponent nature...
March 26, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38530161/subperiosteal-delivery-of-transforming-growth-factor-beta-1%C3%A2-and-human-growth-hormone-from-mineralized-pcl-films
#23
JOURNAL ARTICLE
Matthew B Parlato, Jae Sung Lee, David G Belair, Gianluca Fontana, Ellen Leiferman, Rewais Hanna, Connie Chamberlain, Erik A Ranheim, William L Murphy, Matthew A Halanski
The ability to locally deliver bioactive molecules to distinct regions of the skeleton may provide a novel means by which to improve fracture healing, treat neoplasms or infections, or modulate growth. In this study, we constructed single-sided mineral-coated poly-ε-caprolactone membranes capable of binding and releasing transforming growth factor beta 1 (TGF-β1) and human growth hormone (hGH). After demonstrating biological activity in vitro and characterization of their release, these thin bioabsorbable membranes were surgically implanted using an immature rabbit model...
March 26, 2024: Journal of Biomedical Materials Research. Part A
https://read.qxmd.com/read/38529816/bright-near-infrared-emission-from-the-au-39-sr-29-nanocluster
#24
JOURNAL ARTICLE
Zhongyu Liu, Lianshun Luo, Jie Kong, Ellen Kahng, Meng Zhou, Rongchao Jin
The synthesis of atomically precise gold nanoclusters with high photoluminescence quantum yield (PLQY) in the near-infrared (NIR) region and understanding their photoluminescence mechanism are crucial for both fundamental science and practical applications. Herein, we report a highly luminescent, molecularly pure Au39 (PET)29 (PET = 2-phenylethanethiolate) nanocluster with PLQY of 19% in the NIR range (915 nm). Steady state and time-resolved PL analyses, as well as temperature-dependent PL measurements reveal the emission nature of Au39 (PET)29 , which consists of prompt fluorescence (weak), thermally activated delayed fluorescence (TADF), and phosphorescence (predominant)...
March 26, 2024: Nanoscale
https://read.qxmd.com/read/38529746/ultra-thin-gaas-single-junction-solar-cells-for-self-powered-skin-compatible-electrocardiogram-sensors
#25
JOURNAL ARTICLE
Yonghyun Nam, Dongjoon Shin, Jun-Gyu Choi, Inho Lee, Sunghyun Moon, Yeojun Yun, Won-June Lee, Ikmo Park, Sungjun Park, Jaejin Lee
GaAs thin-film solar cells have high efficiency, reliability, and operational stability, making them a promising solution for self-powered skin-conformal biosensors. However, inherent device thickness limits suitability for such applications, making them uncomfortable and unreliable in flexural environments. Therefore, reducing the flexural rigidity becomes crucial for integration with skin-compatible electronic devices. Herein, this study demonstrated a novel one-step surface modification bonding methodology, allowing a streamlined transfer process of ultra-thin (2...
March 26, 2024: Small Methods
https://read.qxmd.com/read/38529677/coarsening-of-quasi-two-dimensional-emulsions-formed-by-islands-in-free-standing-smectic-films
#26
JOURNAL ARTICLE
Christoph Klopp, Torsten Trittel, Ralf Stannarius
We study the coarsening behavior of assemblies of islands on smectic A freely suspended films in ISS microgravity experiments. The islands can be regarded as liquid inclusions in a two-dimensional fluid in analogy to liquid droplets of the discontinuous phase of an emulsion. The coarsening is effectuated by two processes, predominantly by island coalescence, but to some extend also by Ostwald ripening, whereby large islands grow at the expense of surrounding smaller ones. A peculiarity of this system is that the continuous and the discontinuous phases consist of the same material...
March 26, 2024: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://read.qxmd.com/read/38529541/empowering-ultrathin-polyamide-membranes-at-the-water-energy-nexus-strategies-limitations-and-future-perspectives
#27
REVIEW
Pulak Sarkar, Chenyue Wu, Zhe Yang, Chuyang Y Tang
Membrane-based separation is one of the most energy-efficient methods to meet the growing need for a significant amount of fresh water. It is also well-known for its applications in water treatment, desalination, solvent recycling, and environmental remediation. Most typical membranes used for separation-based applications are thin-film composite membranes created using polymers, featuring a top selective layer generated by employing the interfacial polymerization technique at an aqueous-organic interface. In the last decade, various manufacturing techniques have been developed in order to create high-specification membranes...
March 26, 2024: Chemical Society Reviews
https://read.qxmd.com/read/38527363/exploring-the-weak-visible-near-infrared-and-no2-detection-capabilities-of-pbs-sb2o5-heterostructures-with-dft-interpretations
#28
JOURNAL ARTICLE
Utkarsh Kumar, Yu-Che Tsou, Deng Zu-Yin, Bal Chandra Yadav, Wen-Min Huang, Chiu-Hsien Wu
The need for photosensors and gas sensors arises from their pivotal roles in various technological applications, ensuring enhanced efficiency, safety, and functionality in diverse fields. In this paper, interlinked PbS/Sb2O5 thin film has been synthesized by a magnetron sputtering method. We control the temperature to form the composite by using their different nucleation temperature during the sulfonation process. A nanostructured PbS/Sb2O5 with cross-linked morphology was synthesized by using this fast and efficient method...
March 25, 2024: Nanotechnology
https://read.qxmd.com/read/38527361/efficiently-tuning-the-electrical-performance-of-pbttt-c14-thin-film-via-in-situ-controllable-multiple-precursors-al2o3-zno-vapor-phase-infiltration
#29
JOURNAL ARTICLE
Zhen Jia, Weike Wang, Chuang Ma, Xuelian Zhang, Ruihang Yan, Jiankang Zhu
Conjugated polymer-based organic/inorganic hybrid materials become the current research frontier and show great potential to integrate flexible polymers and rigid solid materials, which have been widely used in the field of various flexible electronics and optical devices. In this study, based on the multiple vapor phase infiltration (VPI) process, various precursor molecules (diethylzinc DEZ, trimethylaluminum TMA, H2O) are applied for the in situ modification of PBTTT-C14 films. The conductivity of the PBTTT-C14/Al2O3:ZnO (AZO) film is significantly enhanced, and the maximum value of conductivity is 1...
March 25, 2024: Nanotechnology
https://read.qxmd.com/read/38527274/narrow-bandgap-metal-halide-perovskites-for-all-perovskite-tandem-photovoltaics
#30
REVIEW
Shuaifeng Hu, Jarla Thiesbrummel, Jorge Pascual, Martin Stolterfoht, Atsushi Wakamiya, Henry J Snaith
All-perovskite tandem solar cells are attracting considerable interest in photovoltaics research, owing to their potential to surpass the theoretical efficiency limit of single-junction cells, in a cost-effective sustainable manner. Thanks to the bandgap-bowing effect, mixed tin-lead (Sn-Pb) perovskites possess a close to ideal narrow bandgap for constructing tandem cells, matched with wide-bandgap neat lead-based counterparts. The performance of all-perovskite tandems, however, has yet to reach its efficiency potential...
March 25, 2024: Chemical Reviews
https://read.qxmd.com/read/38527220/mechanical-tester-driven-by-surface-tension
#31
JOURNAL ARTICLE
Yan Wang, Biqi Shao, Jia Song, Wei Hong, Chuan Fei Guo
The measurement of in-plane mechanical properties, such as Young's modulus and strength, of thin and stretchable materials has long been a challenge. Existing measurements, including wrinkle instability and nano indentation, are either indirect or destructive, and are inapplicable to meshes or porous materials, while the conventional tension test fails to measure the mechanical properties of nanoscale films. Here, we report a technique to test thin and stretchable films by loading a thin film afloat via differential surface tension and recording its deformation...
March 25, 2024: Nano Letters
https://read.qxmd.com/read/38526219/ultrafast-electron-and-hole-transfer-and-efficient-charge-separation-in-a-sb-2-se-3-cds-thin-film-p-n-heterojunction
#32
JOURNAL ARTICLE
Arshdeep Kaur, Tanmay Goswami, Kaliyamoorthy Justice Babu, Hirendra N Ghosh
Harvesting solar energy for different applications requires the continuous development of new semiconducting materials to exploit a broad part of the solar spectrum. In this direction, antimony selenide (Sb2 Se3 ) has attracted a tremendous amount of attention over the past few years as a light-harvesting material for photovoltaic device applications owing to its phase stability, high absorption coefficient, earth abundance, and low toxicity. Here, we have fabricated a high-quality heterojunction of a p-type Sb2 Se3 film and an n-type CdS film using the thermal evaporation technique...
March 25, 2024: Journal of Physical Chemistry Letters
https://read.qxmd.com/read/38525789/emerging-ferroelectric-materials-scaln-applications-and-prospects-in-memristors
#33
REVIEW
Dong-Ping Yang, Xin-Gui Tang, Qi-Jun Sun, Jia-Ying Chen, Yan-Ping Jiang, Dan Zhang, Hua-Feng Dong
The research found that after doping with rare earth elements, a large number of electrons and holes will be produced on the surface of AlN, which makes the material have the characteristics of spontaneous polarization. A new type of ferroelectric material has made a new breakthrough in the application of nitride-materials in the field of integrated devices. In this paper, the application prospects and development trends of ferroelectric material ScAlN in memristors are reviewed. Firstly, various fabrication processes and structures of the current ScAlN thin films are described in detail to explore the implementation of their applications in synaptic devices...
March 25, 2024: Materials Horizons
https://read.qxmd.com/read/38525056/pioneering-the-preparation-of-porous-pim-1-membranes-for-enhanced-water-vapor-flow
#34
JOURNAL ARTICLE
Esra Caliskan, Sergey Shishatskiy, Volker Abetz, Volkan Filiz
In this study, porous polymers of intrinsic microporosity (PIM-1) membranes were prepared by non-solvent induced phase inversion (NIPS) and investigated for water vapor transport in view of their application in membrane distillation (MD). Due to the lack of high boiling point solvents for PIM-1 that are also water miscible, the mixture of tetrahydrofuran (THF) and N -methyl-2-pyrrolidone (NMP) was found to be optimal for the formation of a membrane with a developed porous system both on the membrane surface and in the bulk...
March 20, 2024: RSC Advances
https://read.qxmd.com/read/38525011/targeted-ultrasound-nanobubbles-therapy-for-prostate-cancer-via-immuno-sonodynamic-effect
#35
JOURNAL ARTICLE
Xin Huang, Yueying Chen, Fanglu Zhong, Bin Gui, Yugang Hu, Yuxin Guo, Qing Deng, Qing Zhou
BACKGROUND: Prostate cancer (PCa) poses a significant global health threaten. Immunotherapy has emerged as a novel strategy to augment the inhibition of tumor proliferation. However, the sole use of anti-PD-L1 Ab for PCa has not yielded improvements, mirroring outcomes observed in other tumor types. METHODS: This study employed the thin film hydration method to develop lipid nanobubbles (NBs) encapsulating chlorin e6 (Ce6) and anti-PD-L1 Ab (Ce6@aPD-L1 NBs). Our experimental approach included cellular assays and mouse immunization, providing a comprehensive evaluation of Ce6@aPD-L1 NBs' impact...
2024: International Journal of Nanomedicine
https://read.qxmd.com/read/38524526/deposition-of-zno-thin-films-with-different-powers-using-rf-magnetron-sputtering-method-structural-electrical-and-optical-study
#36
JOURNAL ARTICLE
Bassam Abdallah, Walaa Zetoun, Ahamad Tello
Zinc Oxide thin films at room temperature with good crystallinity quality have been deposited at different Radio Frequency powers. Magnetron sputtering technique has been carried out on glass and oriented Si(100) substrates. The film structure has been characterized by X-ray Diffraction (XRD) and MicroRaman spectroscopy, which possesses a wurtzite structure with (002) preferential orientation selecting suitable conditions. Scanning electron microscope (SEM) and atomic force microscopy (AFM) have been utilized to determine the films surface morphology...
March 30, 2024: Heliyon
https://read.qxmd.com/read/38523600/homogeneous-and-nanogranular-prussian-blue-to-enable-long-term-stable-electrochromic-devices
#37
JOURNAL ARTICLE
Xiaofang Fu, Kun Li, Chengli Zhang, Qiang Wang, Guanglong Xu, Alexander Alexandrovich Rogachev, Maxim Anatolievich Yarmolenko, Hongtao Cao, Hongliang Zhang
The increasing demand for the state-of-the-art electrochromic devices has received great interest in synthesizing Prussian blue (PB) nanoparticles with a uniform diameter that exhibit excellent electrochromism, electrochemistry, and cyclability. Herein, we report the controllable synthesis of sub-100 nm PB nanoparticles via the coprecipitation method. The diameter of PB nanoparticles can be modulated by adjusting the reactant concentration, the selection of a chelator, and their purification. The self-assembled nanogranular thin films, homogeneously fabricated by using optimized PB nanoparticles with an average diameter of 50 nm as building blocks via the blade coating technique enable excellent performance with a large optical modulation of 80% and a high coloration efficiency of 417...
March 25, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38523333/effect-and-regulation-mechanism-of-post-deposition-annealing-on-the-ferroelectric-properties-of-alscn-thin-films
#38
JOURNAL ARTICLE
Mingrui Liu, Hang Zang, Yuping Jia, Ke Jiang, Jianwei Ben, Shunpeng Lv, Dan Li, Xiaojuan Sun, Dabing Li
Integrating ferroelectric AlScN with III-N semiconductors to enhance the performance and tunability of nitride devices requires high-quality AlScN films. This work focuses on the effect and regulation mechanism of post-annealing in pure N2 on the crystal quality and ferroelectric properties of AlScN films. It is found that the crystal quality improves with increasing annealing temperatures. Remarkably, the leakage current of AlScN films caused by grain boundaries could be reduced by four orders of magnitude after annealing at 400 °C...
March 24, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38522203/chemically-sprayed-pristine-and-cd-2-incorporated-co-2-sno-4-thin-films-for-low-ppm-level-enhanced-chemi-resistive-behaviour-towards-dimethylamine-detection-at-room-temperature
#39
JOURNAL ARTICLE
Santhosh Nallakumar, Usha Rani Muthurakku
The surge in hazardous volatile organic liquid emissions driven by the rapid growth of the manufacturing industry has compelled a rising demand for gas sensors, which exhibit remarkable sensitivity, selectivity, and room temperature operation. Ternary metal oxide spinel has indeed garnered significant attention in chemi-resistive gas sensors due to their large reactive surface area, physicochemical, and other unique properties. In this work, we have studied chemically sprayed pristine and Cd 2+ incorporated Co2 SnO4 thin film as a sensing layer under room temperature (300 K) conditions...
March 15, 2024: Journal of Hazardous Materials
https://read.qxmd.com/read/38522106/laser-induced-transverse-voltage-effect-in-c-axis-inclined-laxsr1-xtio-3-thin-films-prepared-by-mocvd
#40
JOURNAL ARTICLE
Tian Xie, Bowan Tao, Ruipeng Zhao, Tong Zhang, Xi Chen, Kai Yang, Zhenzhe Li, Yudong Xia, Hongbo Tian, Guoliang Ming
The light/thermal detector based on the laser-induced transverse voltage (LITV) effect has garnered significant interest for its rapid and broad spectral response. In this study, we prepared the La-doped STO epitaxial thin films on the 12° inclined single crystal LaAlO3(LAO) (100) substrates using our home-designed metal-organic chemical vapor deposition (MOCVD) system. Under the illumination of a 248nm laser, the LITV signals of LaxSr1-xTiO3 films were observed and showed dependence on the La doping level, which can be explained by the changes in the light absorption coefficient, thermal conductivity, and optical penetration depth...
March 24, 2024: Nanotechnology
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