bluuebunny/crossref_metadata_2025_split huggingface dataset:
Bottom‐Up Growth of Graphene Nanospears and Nanoribbons
Authors: Sun Haibin , Liu Fengning , Zhang Leining , Ko Kyungmin , McLean Ben , An Hao , Kim Sungkyun , Huang Ming , Willinger Marc‐Georg , Ruoff Rodney S. , Suh Joonki , Wang Zhu‐Jun , Ding Feng 
Published: August 2022

AbstractOne dimensional graphene nanostructures are one of the most promising materials for next generation electronics. Here, the chemical vapor depostion growth of graphene nanoribbons (GNRs) and graphene nanospears (GNSs) on a copper surface is reported. The growth of GNRs and GNSs is enabled by a vapor–liquid–solid (VLS) mechanism guided by on‐surface propagation of a liquid Cu‐Si catalyst particle. The slow lateral growth and the fast VLS vertical growth give rise to spear head‐shaped GNSs. In situ observations further confirm that the lateral graphene growth can be completely suppressed and thus GNRs are grown. The synthesized field effect transistor (FET) devices show that the GNRs and GNSs have high carrier mobilities of ≈2000 cm2 V−1 s−1. Both FET and Kelvin probe force microscopy measurements confirm that the Fermi levels of the synthesize GNSs shift downward from the wide part to the tip is strongly p‐doped. These findings yield key insights into the growth mechanism of graphene and open a door for achieving a facile and scalable method of synthesizing free standing GNRs and GNSs and their applications, such as the Fermi‐level tunable devices.
Organic Neuroelectronics: From Neural Interfaces to Neuroprosthetics
Authors: Go Gyeong‐Tak , Lee Yeongjun , Seo Dae‐Gyo , Lee Tae‐Woo 
Published: August 2022

AbstractRequirements and recent advances in research on organic neuroelectronics are outlined herein. Neuroelectronics such as neural interfaces and neuroprosthetics provide a promising approach to diagnose and treat neurological diseases. However, the current neural interfaces are rigid and not biocompatible, so they induce an immune response and deterioration of neural signal transmission. Organic materials are promising candidates for neural interfaces, due to their mechanical softness, excellent electrochemical properties, and biocompatibility. Also, organic nervetronics, which mimics functional properties of the biological nerve system, is being developed to overcome the limitations of the complex and energy‐consuming conventional neuroprosthetics that limit long‐term implantation and daily‐life usage. Examples of organic materials for neural interfaces and neural signal recordings are reviewed, recent advances of organic nervetronics that use organic artificial synapses are highlighted, and then further requirements for neuroprosthetics are discussed. Finally, the future challenges that must be overcome to achieve ideal organic neuroelectronics for next‐generation neuroprosthetics are discussed.
Roll‐To‐Roll Fabrication of Zero‐Volume‐Expansion Lithium‐Composite Anodes to Realize High‐Energy‐Density Flexible and Stable Lithium‐Metal Batteries
Authors: Luo Chao , Hu Hong , Zhang Tian , Wen Shujing , Wang Ruo , An Yanan , Chi Shang‐Sen , Wang Jun , Wang Chaoyang , Chang Jian , Zheng Zijian , Deng Yonghong 
Published: August 2022

AbstractThe lithium (Li)‐metal anode offers a promising solution for high‐energy‐density lithium‐metal batteries (LMBs). However, the significant volume expansion of the Li metal during charging results in poor cycling stability as a result of the dendritic deposition and broken solid electrolyte interphase. Herein, a facile one‐step roll‐to‐roll fabrication of a zero‐volume‐expansion Li‐metal‐composite anode (zeroVE‐Li) is proposed to realize high‐energy‐density LMBs with outstanding electrochemical and mechanical stability. The zeroVE‐Li possesses a sandwich‐like trilayer structure, which consists of an upper electron‐insulating layer and a bottom lithiophilic layer that synergistically guides the Li deposition from the bottom up, and a middle porous layer that eliminates volume expansion. This sandwich structure eliminates dendrite formation, prevents volume change during cycling, and provides outstanding flexibility to the Li‐metal anode even at a practical areal capacity over 3.0 mAh cm−2. Pairing zeroVE‐Li with a commercial NMC811 or LCO cathode, flexible LMBs that offer a record‐breaking figure of merit (FOM, 45.6), large whole‐cell energy density (375 Wh L−1, based on the volume of the anode, separator, cathode, and package), high‐capacity retention (> 99.8% per cycle), and remarkable mechanical robustness under practical conditions are demonstrated.
Ultrasensitive Refractive Index Sensing Based on the Quasi‐Bound States in the Continuum of All‐Dielectric Metasurfaces
Authors: Hsiao Hui‐Hsin , Hsu Yi‐Chien , Liu Ai‐Yin , Hsieh Jou‐Chun , Lin Yu‐Hsin 
Published: August 2022

AbstractSymmetry‐protected quasi‐bound states in the continuum (BIC) controlled by metasurfaces with broken in‐plane symmetry are widely exploited to achieve highly surface‐sensitive and spectrally sharp resonances for nanophotonic biosensors. Through the engineering of silicon‐based asymmetric nanobar pairs, a quasi‐BIC mode is excited showing a dominant toroidal dipole (TD) and electric quadrupole (EQ) resonant feature in the near‐infrared and performs ultrahigh sensitivity in the refractometric monitoring of local environment changes. Contrary to the typical electric and magnetic Mie‐type resonances of dielectric resonators with the enhanced field mostly inside the resonator volume, the TD‐EQ quasi‐BIC mode is found to exhibit strong and tightly confined optical fields at the surface of tilted nanobar pairs, and its refractive‐index (RI) sensitivity can be dramatically increased for nanopillars with larger aspect‐ratio. The measured (simulated) sensitivity and figure of merit for nanobar pairs with a height of 450 nm reach 608 nm/RIU and 46 (612 nm/RIU and 85), respectively. Such ultrahigh sensitive all‐dielectric platform can be fabricated through complementary metal‐oxide‐semiconductor compatible process and is promising for on‐chip integration and sensor miniaturization to a wide range of diagnostic applications.
Sellotape Exfoliated Layered Quasi‐2D Perovskite Thin Film for Efficient Light‐Emitting Diodes
Authors: Liu Yanliang , Chen Fang , Jiang Zhengyan , Li Yang , Zhou Xianyong , Wu Jiawen , Chen Shi , Zhang Luozheng , Li Yaru , Liu Chang , Bae Sang‐Hoon , Lee Bo Ram , Huang Boyuan , Wang Xingzhu , Lee Yun Seog , Kim Jeehwan , Park Sung Heum , Yu Xue‐Feng , Xu Baomin 
Published: August 2022

AbstractIn 2004, K. S. Novoselov and A. K. Geim et al. have used sellotape to peel off the layered 2D graphite, and successfully obtained few‐layer thin graphene. Inspired by this, herein, the sellotape is initially used to exfoliate the layered Ruddlesden–Popper (RP) quasi‐2D perovskite film for efficient light‐emitting diodes application. The top surface layer of quasi‐2D perovskite film is mechanically peeled off by the sellotape without damaging the crystalline region below, which minimizes the poor conductivity issue of quasi‐2D perovskite film owing to the decreased defect density. Moreover, the exfoliated quasi‐2D film exhibits low charge traps density and enhanced energy transfer from low‐dimensional to high‐dimensional domains due to the elimination of surface defective layer and the recrystallization of quasi‐2D perovskite crystal, leading to high photoluminescence quantum yield (PLQY) up to 83.2%. Subsequently, an efficient perovskite light‐emitting diode based on the exfoliated quasi‐2D perovskite thin film is achieved with high current efficiency of 46.0 cd m−2 and excellent external quantum efficiency (EQE) up to 14.8%.
A Hole Transport Layer‐Free, More Thermally Stable, Self‐Powered CH3NH3PbBr3‐Based Multiband Imaging Photodetector with Novel Topological Insulator Bi2Te3 Electrodes
Authors: Liu Shuo , Jiao Shujie , Lu Hongliang , Yang Song , Zhao Yue , Wang Dongbo , Gao Shiyong , Wang Jinzhong , Zhao Liancheng , Li Yongfeng 
Published: August 2022

AbstractThe conventional forward‐structure perovskite devices typically employ organic small molecule and noble metal as the hole transport layer (HTL) and electrode, respectively, which results in poor thermal stability and high costs. To address this issue, a HTL‐free CH3NH3PbBr3 photodetector with the topological insulator bismuth telluride (Bi2Te3) electrode is developed. The device exhibits apparent sensitivity to ultraviolet/visible waveband with a peak responsivity of 97.5 mA W−1, switching ratio exceeding 104, and the detectivity is up to 1012 Jones without external bias. These figures‐of‐merit are distinguished among the reported CH3NH3PbBr3‐based devices. Impressively, this device presents a light power‐modulated near‐infrared detection thanks to the contribution of topological insulator Bi2Te3, and the underlying mechanism is elaborated in‐depth. Moreover, the novel device improves significantly in short and long‐time thermal stability. Benefiting from these distinguished properties, the photodetector is imaging‐capable and a 50 × 50 pixels’ pattern with satisfactory resolution has been achieved. This work highlights the application of topological insulators on the HTL‐free perovskite photodetector, offering new insights for the future commercialization of perovskite devices.
Quantum Linear Magnetoresistance and Nontrivial Berry Phase in High‐Mobility Elemental Tellurium
Authors: Ji Yi , Wang Bin , Li Chushan , Zuo Huakun , Yi Enkui , Jin Gangjian , Guo Donghui , Shen Bing , Zhong Dingyong , Wang Huichao 
Published: August 2022

AbstractElemental Tellurium (Te) is an important p‐type semiconductor with wide practical applications. It is currently of great interest as a chiral crystal with broken inversion and mirror symmetries, and its topological nature is under active discussion. Here the Shubnikov–de Haas (SdH) oscillations with a nontrivial π Berry phase and the quantum linear magnetoresistance (MR) in as‐synthesized high‐mobility Te single crystals are reported. The vapor transport grown Te shows a hollow hexagonal prism structure with tunable carrier density and high mobility of about 1000 cm2 V−1 s−1 at low temperature. For concentration p > 1017 cm−3, the conspicuous SdH oscillations map out the dumbbell‐shaped Fermi surface and the long‐standing peculiar amplitude change with varying magnetic field orientation is explained by careful quantitative analyses. Pulsed magnetic field measurements up to 57 T disclose a quantum linear MR beyond the quantum limit and the Landau fan diagram clearly reveals a topologically nontrivial π Berry phase. This work paves way for the synthesis of high‐mobility Te structures and sheds light onto the intrinsic nontrivial topology of the attractive elemental substance.
Off‐Axis Vortex‐Induced Asymmetric Spin‐Dependent Splitting
Authors: Zhou Xiang , Ding Yiping , Tu Jialong , Zhang Jing , Deng Dongmei 
Published: August 2022

AbstractA simple and effective method to control the asymmetric spin splitting flexibly by introducing off‐axis vortex beams is reported here. Unlike the conventional spin Hall effect of light, both the value and the sign of the right‐ and left‐handed circularly polarized components can be manipulated individually by modulating the off‐axis vortex's position. Significantly, the in‐plane shifts occur when the vortex position x0 is non‐zero. In addition, it is found that this asymmetric splitting increases with increase in the topological charge. This flexibly adjustable asymmetric spin splitting provides the possibility to accelerate the development of nano‐photonic devices.
Effect of compatibilizer on the structure and property of polycarbonate/polypropylene alloys
Authors: Yu Xingxing , Ren Jifu , He Jingwei , Su Long , Liu Fang 
Published: August 2022

AbstractPolycarbonate/Polypropylene (PC/PP) alloy is a typical thermodynamically incompatible system. In this work, ethylene‐methyl acrylate copolymer (EMA), methoxamine hydrochloride‐grafted POE (POE‐g‐MAH), ethylene‐butyl acrylate‐glycidyl methacrylate copolymer (EAY), a self‐made compatibilizer (PPM‐g‐GMA) of a mixture of glycidyl methacrylate grafted PP (PP‐g‐GMA) and glycidyl methacrylate‐grafted POE (POE‐g‐GMA) were selected as compatibilizer to prepare PC/PP alloys with the mass ratio of 65:30. Systematical studies of compatibilizer type, content and its effects on microstructure, mechanical properties, dielectric properties, dielectric properties and dynamic rheological properties have been carried out in this PC/PP alloys. The results demonstrated that all the compatibilizers in this article resulted in an effective improvement of the compatibility of PC/PP alloys, and the self‐made compatibilizer of PPM‐g‐GMA exhibited a significant improvement over the other three compatibilizers in notched izod impact strength, tensile strength, and bending strength. In addition, a relative low dielectric constants and dielectric losses under 2.5 GHz electric field could be obtained with the assistance of POE‐g‐MAH and PPM‐g‐GMA, indicating its possible application in dielectric materials.
Fatty acid modified cellulose: Preparation and application as green multi‐functional additive in a tyre tread formulation
Authors: Chowdhury Soumya Ghosh , Ghosh Sreedip , Pal Abhijit , Bhattacharyya Sanjay Kr. , Mukhopadhyay Rabindra 
Published: August 2022

AbstractThe increasing demand for biomass‐derived material and its usage in different forms in various commercial applications has become a need for sustainability. In this context, cellulose, the most abundant biodegradable material is modified (FAC) and used in tyre tread formulation. The potential of FAC is appraised against the lubricating nature of process oil due to its restricted usage for the presence of toxic polycyclic aromatic materials. In addition to that, Silane coupling agent is also replaced by FAC to assess its potency as a coupling agent. Multi‐functional nature of FAC is evaluated through morphological, rheological, physicomechanical, and dynamic‐mechanical means. Total replacement of oil with FAC has induced ~30–40% improvement in static modulus across elongation %age. Furthermore, improvement in grip properties (6%) along with a reduction in hysteresis loss (11%) is also portrayed by the composite having a complete substitution of oil by FAC. The efficacy of FAC as a potential replacement for SCA is also evaluated in this study. Replacement of 66% of SCA along with the complete substitution of oil with FAC has depicted comparable physicomechanical, dynamic as well as flow behavior with respect to the reference one. The introduction of fibrous structure along with intermolecular covalent bonding has reinforced FAC with multifunctional behavior. Thus, this multi‐functional behavior of FAC (reinforcing, dispersing, and coupling) can easily be applied in commercial tyre formulation facilitating a breakthrough in cheap and high‐performance biomass‐derived rubber composite.
Sustainability assessment of strategic asset management decisions on municipal water infrastructure systems: Framework and application
Authors: Mohammadifardi Hamed , Knight Mark , Unger Andre 
Published: August 2022

AbstractDeveloping socially acceptable, environmentally friendly, and financially viable asset management plans (AMPs) is a major challenge for water and wastewater utilities and calls for a comprehensive Sustainability Assessment (SA). This paper proposes a novel framework that applies System Dynamics and Life Cycle Assessment tools to evaluate the long‐term sustainability of strategic asset management decisions for water and wastewater infrastructure systems. The merit of the proposed framework in dealing with the non‐linearity and dynamic behavior of the socio‐economic systems and its utility for SA of strategic asset management decisions are demonstrated in a case study of a Wastewater Collection (WWC) network system. Furthermore, the significant importance of population growth and urban densification policies in sustainability of AMP are highlighted by comparing four alternative scenarios of (1) 100% urban densification, (2) 0% urban densification, (3) 50% densification, and (4) no population growth in the case study. The results of the case study show that the greenhouse gas emission, operational and capital expenses, and bill burden of WWC and treatment services significantly reduce with urban densification.
Prüfverfahren zur Bestimmung der Trittschalldämmung von Balkon‐Anschlusselementen
Authors: Heidemann Lucas , Scheck Jochen , Zeitler Berndt 
Published: August 2022

AbstractFür die thermische Trennung von Balkonen und Laubengängen von der Fassade sind bewehrte Anschlusselemente Stand der Technik. Diese Elemente beeinflussen die Trittschallübertragung und sind somit für die schalltechnische Planung von Bedeutung. Im Rahmen von Forschungsarbeiten an der HFT Stuttgart wurde ein Labor‐Prüfverfahren zur schalltechnischen Kennzeichnung solcher Anschlusselemente entwickelt. Der relativ kompakte Prüfaufbau besteht aus einem Balkon, der über das Anschlusselement mit einer Decke verbunden ist. Anhand von Körperschallmessungen wird die Trittschallminderung in Analogie zu Deckenauflagen, bzw. die Trittschallpegeldifferenz als Einfügungsdämmung mit Bezug auf die durchbetonierte Situation bestimmt. Beide Kenngrößen können für den Produktvergleich und die Prognose der Trittschallübertragung im Gebäude nach DIN EN ISO 12354‐2 verwendet werden. In diesem Beitrag wird das Prüfverfahren vorgestellt und anhand von Finite‐Elemente‐Simulationen validiert.
Vordimensionierung von Lüftungsöffnungen in Doppelfassaden
Authors: Friedrich Matthias , Schweers Klaus , Wellershoff Frank 
Published: August 2022

AbstractDoppelfassaden verbessern den Schallschutz bei natürlicher Fassadenlüftung und bieten der Verschattung im Fassadenzwischenraum (FZR) einen Schutz vor hohen Windlasten. Bezüglich der natürlichen Lüftung ist jedoch zu beachten, dass die Luftströmungen zwei Fassadenebenen passieren müssen und die Luftwechselzahl nicht mit den Annahmen für einschalige Fassaden geplant werden kann. Die potenziell höheren Temperaturen im Fassadenzwischenraum erfordern zudem eine besondere Beachtung bei der Planung des sommerlichen Wärmeschutzes. An zehn Gebäuden in Hamburg mit Korridor‐Doppelfassaden und Kastenfenster‐Doppelfassaden wurden Klimadaten erfasst und Luftwechselmessungen vorgenommen. Anhand dieser Daten wurde ein Berechnungsansatz des Außenluftwechsels erstellt und in transienten thermischen Gebäudesimulationen angewandt. Erstellt wurde eine Methode, mit der in frühen Planungsphasen schnell und ohne Softwareanwendung die erforderliche Größe der Lüftungsöffnungen bestimmt werden kann.
Einsatz von Softwaretools am FG Bauphysik der Universität Kassel mit exemplarischen Aufgaben – Serie: Gebäudesimulation und Berechnungstools in der Lehre
Authors: Maas Anton , Vukadinovic Mario , Klauß Swen 
Published: August 2022

AbstractDiese Artikelserie stellt den Einsatz von Computerprogrammen in der Hochschullehre der Bauphysik und Gebäudetechnik für Architekten und Bauingenieure vor.Das Fachgebiet Bauphysik (Fachbereich Architektur Stadtplanung Landschaftsplanung) der Universität Kassel bietet im Bereich der Lehre Vorlesungen und Seminare primär für Architekturstudent:innen im Bachelor und Master an. Die Veranstaltungen sind meist auch für Student:innen der Ingenieurwissenschaften an der Universität Kassel belegbar. Je nach Studiengang und Abschluss werden Softwareprogramme abgestuft angewendet.
Wissenstransfer im Stahlbeton‐Bogenbrückenbau der 1930er‐Jahre
Authors: Pelke Eberhard , Kurrer Karl‐Eugen 
Published: August 2022

AbstractAb Mitte der 1920er‐Jahre fand der Stahlbeton auch im Großbrückenbau zu der ihm eigenen Konstruktionssprache. Dies wird im Bau von weitgespannten Bogenbrücken aufgezeigt, die in der Mitte der Inventionsphase des Stahlbetonbaus (1925–1950) ihren Höhepunkt erreichte und sich durch die folgenden Merkmale auszeichnet:Erstens: Auflösung des im herkömmlichen Massivbrückenbau üblichen Rechteckquerschnitts, welche zur statisch‐konstruktiven Querschnittsoptimierung führte und damit eine erhebliche Steigerung der Druckspannungen induzierte.Zweitens: Mit der Nutzung höherwertiger Zemente sowie der Trennung von Kriechen und Schwinden gelang dem Bogenbrückenbau aus Stahlbeton eine der Querschnittsoptimierung entsprechende Materialoptimierung.Drittens: Querschnitts‐ und Materialoptimierung schließlich führten zu einer Verfeinerung der baustatischen Analyse weitgespannter Bogenbrücken aus Stahlbeton, die im Kern aus der Ermittlung des Gleichgewichts am verformten Bogensystem besteht.Die genannten drei Merkmale werden exemplarisch an der medialen Präsentation des Wissenstransfers durch Fachzeitschriften konkret aufgezeigt. Handlungsleitend ist eine thematische Recherche der Haupt‐ und Kurzbeiträge der drei den deutschen Sprachraum prägenden Fachzeitschriften „Der Bauingenieur“, „Beton und Eisen“ und „Die Bautechnik“ zu den Sparten von Theorie, Material und Projekt. Die Überprüfung der internationalen Wertigkeit des zuvor gefilterten Themenkanons gelingt über die Veröffentlichungen der International Association for Bridge and Structural Engineering (IABSE).
Combination effect of cilengitide derivatives with gefitinib onTGF‐β1‐induced epithelial‐to‐mesenchymal transition in human non‐small cell lung cancer cells
Authors: Seo Minji , Kim Jiyeon 
Published: August 2022

AbstractCilengitide (cyclo[RGDf(NMe)V]), containing the arginine–glycine–aspartate motif, has been known to increase drug efficacy through coadministration with anticancer agents in various cancers including non‐small cell lung cancer (NSCLC), and cilengitide derivatives have also shown an epithelial‐to‐mesenchymal transition (EMT) inhibitory effect. In addition, we found that some cilengitide derivatives exert anti‐EMT effects in NSCLC cells. Especially, cilengitide derivatives cRGDwV and cRGDyV were shown to be the most effective in NSCLC cell proliferation and exerted an inhibitory effect against the transforming growth factor‐β1 (TGF‐β1)‐induced EMT phenotype changes and related signalings. In this study, we evaluated the combination effect of cRGDwV and cRGDyV with an epidermal growth factor receptor inhibitor gefitinib on the TGF‐β1‐induced EMT process in NSCLC cells. Cilengitide derivatives showed synergistic effects with gefitinib in the expression of EMT markers. Based on these results, we can suggest the potential of these peptides as coadministered drugs in cancers undergoing an EMT process.