bluuebunny/crossref_metadata_2025_split huggingface dataset:
Tunable Plasmonic Devices by Integrating Graphene with Ferroelectric Nanocavity
Authors: Guo Junxiong , Li Shangdong , Chen Jianbo , Cai Ji , Gou Xin , Wang Shicai , Ye Jinghua , Liu Yu , Lin Lin 
Published: August 2022

AbstractGraphene plasmons can become the fundamental of novel conceptual photonic devices, resulting from their unique characteristics containing excitation at room temperature and tunable spectral selectivity in different frequencies. The pursuit of efficiently exciting and manipulating graphene plasmons is necessary and significant for high‐performance devices. Here, the graphene plasmon wave propagating in ferroelectric nanocavity array is investigated. It has been experimentally shown that the periodic ferroelectric polarizations can be used for doping graphene into desired spatial carrier density patterns. Based on a theoretical model that considers periodic ununiform conductivity across graphene sheet, the simulation results show surface plasmon polaritons (SPP) in graphene can be excited by an incident light in a similar way to the excitation of photonic crystal resonant modes. The graphene SPP resonance can be tuned from ≈720 to ≈1 000 cm−1 by rescaling the ferroelectric nanocavity array, and from ≈540 to ≈780 cm−1 by dynamically changing the applied gate voltage. This strategy of graphene carrier engineering to excite SPP offers a promising way for large‐scale, nondestructive fabrication of novel graphene photonic devices.
A Fully Transparent, Stretchable Multi‐Layered Water Barrier Thin Film for the Passivation of Underwater Device Applications
Authors: Oh Myung Seok , Ryu Jin , Jeon Mingyu , Lee Injun , Bae Byeong‐Soo , You Jae Bem , Im Sung Gap 
Published: August 2022

AbstractRecent developments in wearable and embeddable electronic devices in physiological condition, such as neuroprobe and electroceuticals, have brought forth the need for a reliable passivation layer against water permeation into the devices. On top of the excellent waterproof barrier performance, the passivation layers must also be equipped with stretchability and dermatoid softness for the reliable operation of the devices without failure in the wet environment. Here, this work demonstrates a stretchable, superhydrophobic coating with excellent water barrier performance. The stretchable water barrier coating is formed by depositing alternating layers of a highly stretchable, superhydrophobic copolymer and a crosslinked organosiloxane polymer via initiated chemical vapor deposition. During the deposition, the organosiloxane polymer penetrates into the free volume of superhydrophobic copolymer to form a highly mixed network at the interface. Accordingly, a five‐layered coating shows excellent water and molecular barrier performance with no sign of degradation even at 60% of tensile strain. Moreover, this barrier film formed by vapor deposition is uniformly deposited on the substrate surface regardless of the type and morphology of the substrate. The highly stretchable water barrier coating developed in this study will serve as a promising candidate material for the passivation of various stretchable device applications.
Microsized Electrochemical Energy Storage Devices and Their Fabrication Techniques For Portable Applications
Authors: Bassyouni Zahraa , Allagui Anis , Abou Ziki Jana D. 
Published: August 2022

AbstractOver the last decade, Lab‐on‐chip (LOC) technology has been thriving to support the ever‐increasing demand of high‐throughput, fast, accurate, and reliable analysis in an extensive variety of miniaturized systems for medical, chemical, and biological applications. Furthermore, portable electronics and consumer devices such as cell phones, tablets, smart watches, point‐of‐care devices, wireless sensor nodes, radio frequency identification, and other gadgets have witnessed a tremendous demand worldwide. These fast‐paced technologies have an intimate correlation with the booming research activity in micro‐supercapacitors (MSCs) and microbatteries (MBs); two energy storage devices which have claimed the lion's share in powering LOC components and other portable devices. In this review, MSCs and MBs are presented with highlights on their main components, structure, and types, as well as their state‐of‐the‐art performance capabilities. The recent efforts in fabrication strategies, mainly those compatible with device fabrication techniques, stating the advantages and limitations of each are also reviewed. The paper also emphasizes the need for a benchmarking standard upon which performance is compared, as scholarly work shows a discrepancy in the use of different performance metrics to describe the electrochemical performance of such devices.
An Optical Multiplexing Method Using Upconversion Nanoparticles with Tunable P–I Relationship
Authors: Chen Xinyu , Gu Yuyang , Chai Yingjie , Wu Na , Wen Chenqing , Ke Jiaming , Sun Yishuo , Li Fuyou , Feng Wei 
Published: August 2022

AbstractOptical multiplexing is of great value in information acquisition due to its excellent signal encoding ability. However, the number of encoding channels is often limited by instruments or luminescent materials used as information carriers in practical applications. To provide a new option, an optical multiplexing method based on the tunable relationship between excitation power density and emission intensity of upconversion nanoparticles (UCNPs; P–I relationship), which can be regulated by the co‐doping ratio of sensitizer ions and activator ions, is developed. This method can be implemented on commonly used optical imaging equipment. Since the P–I relationship is only related to the energy transfer process of lanthanide ions in UCNPs, it has the potential to be combined with other dimensions of optical multiplexing such as wavelength and intensity to provide more robust encoding ability.
Constructing Chromium Multioxide Hole‐Selective Heterojunction for High‐Performance Perovskite Solar Cells
Authors: Jiang Sheng , Xiong Shaobing , Dong Wei , Li Danqin , Yan Yuting , Jia Menghui , Dai Yannan , Zhao Qingbiao , Jiang Kai , Liu Xianjie , Ding Liming , Fahlman Mats , Sun Zhenrong , Bao Qinye 
Published: August 2022

AbstractPerovskite solar cells (PSCs) suffer from significant nonradiative recombination at perovskite/charge transport layer heterojunction, seriously limiting their power conversion efficiencies. Herein, solution‐processed chromium multioxide (CrOx) is judiciously selected to construct a MAPbI3/CrOx/Spiro‐OMeTAD hole‐selective heterojunction. It is demonstrated that the inserted CrOxnot only effectively reduces defect sites via redox shuttle at perovskite contact, but also decreases valence band maximum (VBM)‐HOMO offset between perovskite and Spiro‐OMeTAD. This will diminish thermionic losses for collecting holes and thus promote charge transport across the heterojunction, suppressing both defect‐assisted recombination and interface carrier recombination. As a result, a remarkable improvement of 21.21% efficiency with excellent device stability is achieved compared to 18.46% of the control device, which is among the highest efficiencies for polycrystalline MAPbI3based n–i–p planar PSCs reported to date. These findings of this work provide new insights into novel charge‐selective heterojunctions for further enhancing efficiency and stability of PSCs.
Mechanism Analysis and Highly Scaled Aluminum Nitride‐Based Self‐Rectifying Memristors
Authors: Zhang Kailiang , Zhao Xuanyu , Han Yemei , Hu Kai , Zhang Yujian , Li Lianqiu , Zhou Qiaozhen , Shan Xin , Lin Xin , Shan Ke , Ma Zexia , Liu Qi , Song Zhitang , Wang Fang 
Published: August 2022

AbstractStorage‐class memory and advanced neuromorphic‐related applications place an urgent requirement on large‐scale, highly compacted memristor array. However, crosstalk issue constrains the addressing accuracy and effective data scale of current array‐level memristor, which is detrimental to the industrial realization. Herein, scalability and physical processes of Al/AlN/W self‐rectifying memristor are investigated. The devices exhibit improved rectification ratio from 94 to 2600, switching ratio from 286 to 6099, higher uniformity, reliability, and nonvolatility by scaling the size from 10 to 5 µm. The application of aluminum nitride as active layer material not only makes the electrical properties more sensitive to the external electric field, but also dominates the switching process by constructing nitrogen vacancy conducting filaments, as demonstrated by a combination of scalability and mechanistic analysis. The high‐scaled AlN‐based self‐rectifying memristor exhibits a maximum effective array size of N = 14 372, which is 53 times enhancement compared to 10 µm size cells. The Al/AlN/W self‐rectifying memristor is confirmed to have a strong ability to suppress sneak currents and has the potential to serve large‐scale array‐level applications.
Catalyst‐free Hantzsch Ester‐mediated Organic Transformations Driven by Visible light
Authors: Suresh Yedase Girish , Venugopal Sreelakshmi , P. Arya , Reddy Yatham Veera 
Published: August 2022

AbstractIn the early days of synthetic organic chemistry Hantzsch esters (HEs) were bio‐inspired hydride donors and often used for the reduction of C=X (X=C, N, O) bonds. Recently, it has been proved that HEs and their derivatives (4‐Alkyl‐ or acyl‐Hantzsch esters) serve as electron donor, proton source, hydrogen atom donor, alkyl and acyl radical precursors in photoredox catalysis. Recently it was found that the excited‐state of HEs has also been identified as a strong photo reductant in the absence of photocatalyst and also, the donor of HE forms EDA‐complexes with organic molecules and triggers SET process to generate carbon radical entities. This minireview focuses on the recent chemistry developments where Hantzsch esters act as a photo reductant in organic synthesis, with a special focus on the reaction mechanisms. We hope that this review will help in the further development of radical‐based organic transformations in absence of external photocatalysts.
Influence of Phase Transitions on Diffusive Molecular Transport Across Biological Membranes
Authors: Wu Tong , Wilhelm Michael J. , Ma Jianqiang , Li Yujie , Wu Yuhao , Dai Hai‐Lung 
Published: August 2022

AbstractPhase transitions of lipid bilayer membranes should affect passive transport of molecules. While this hypothesis has been used to design drug‐releasing thermosensitive liposomes, the effect has yet to be quantified. Herein, we use time‐resolved second harmonic light scattering to measure transport of a molecular cation across membranes of unilamellar liposomes composed of the total lipid extract of E. coli from 9 °C to 36 °C, in which two distinct phase transitions (gel to liquid‐disordered phase) have been identified. While the transport rate slowly increases with temperature as a diffusion process, dramatic jumps are observed at 14.7 °C and 27.6 °C, the known phase transitions. The transport rate constant measured as (7.3±0.8)×10−3 s−1 in the liquid‐disordered phase at 36 °C is 35‐times faster than (2.1±0.2)×10−4 s−1 of the gel phase at 9 °C. For the mixed‐phase between these two phases, the measured rates are consistent with a structure of gel domains among a liquid‐disordered bulk.
Reaktionskaskaden evolvierter Enzyme zur Synthese komplexer Moleküle
Authors: Rosenthal Katrin , Bornscheuer Uwe T. , Lütz Stephan 
Published: August 2022

AbstractDank der Fortschritte in der Enzymforschung, im Protein‐Engineering und der Entwicklung mehrstufiger enzymatischer Reaktionskaskaden wurden neue effiziente Wege für die Synthese von Wirkstoffen geschaffen, die chemischen Synthesen überlegen sind. Dies unterstützt das Ziel der chemischen und pharmazeutischen Industrie, zu nachhaltigeren und umweltfreundlicheren Verfahren überzugehen. Zu den neuesten Beispielen gehören die biokatalytischen Kaskaden zur Synthese des zyklischen Dinukleotids MK‐1454, von Molnupiravir und Islatravir sowie die effiziente Fixierung von CO2 zur Herstellung von Stärke mit Hilfe einer künstlichen Enzymkaskade.
Enantioselective Nickel‐Catalyzed C(sp3)−H Activation of Formamides
Authors: Wang Yin‐Xia , Zhang Feng‐Ping , Chen Hao , Li Yue , Li Jiang‐Fei , Ye Mengchun 
Published: August 2022

AbstractEnantioselective Ni‐catalyzed C(sp3)−H bond activation remains an elusive challenge. Herein, we used phosphine oxide‐ligated Ni−Al bimetallic catalyst to realize enantioselective Ni‐catalyzed aliphatic C(sp3)−H activation of formamides, providing a series of chiral N‐containing heterocycles in 40–95 % yield and 70–95 % ee.
Regioselective Transition‐Metal‐Free Arene C−H Borylations: From Directing Groups to Borylation Template Reagents
Authors: Berionni Guillaume 
Published: August 2022

AbstractThe latest developments in the field of electrophilic C−H borylation reactions of arenes and heteroarenes without transition metals are briefly overviewed, with a particular emphasis on the latest advances enabling the highly regioselective C−H borylations of indoles and indolines using borylation template reagents.
Efficient Photoreduction of Diluted CO2to Tunable Syngas by Ni−Co Dual Sites through d‐band Center Manipulation
Authors: Qian Gan , Lyu Wenyuan , Zhao Xin , Zhou Jingyi , Fang Ruiqi , Wang Fengliang , Li Yingwei 
Published: August 2022

AbstractPhotocatalytic conversion of CO2into syngas is a promising way to address the energy and environmental challenges. Here we report the integration of Ni−Co dual sites on Ni doped Co3O4ultrathin nanosheets assembled double‐hollow nanotube (Ni−Co3O4NSDHN) for efficient photoreduction of low‐concentration CO2.Quasiin situ spectra and density functional theory calculations demonstrate that the declining ofd‐band center of Ni−Co dual sites enables the electrons accumulation in thedxz/dyz‐2π* anddz2‐5σorbitals. As a result, the binding strength of *CO is weakened and the *H adsorption site is modulated from metal sites to an oxygen site. Remarkably, Ni−Co3O4NSDHN exhibits superior diluted CO2photoconversion activity and controllable selectivity under the irradiation of visible light or even natural sunlight. A syngas evolution rate of 170.0 mmol g−1 h−1with an apparent quantum yield of 3.7 % and continuously adjustable CO/H2ratios from 1 : 10 to 10 : 1 are achieved.
Tuning the Regioselectivity of Topochemical Polymerization through Cocrystallization of the Monomer with an Inert Isostere
Authors: Hema Kuntrapakam , Raju Cijil , Bhandary Subhrajyoti , Sureshan Kana M. 
Published: August 2022

AbstractRegiochemistry of topochemical reactions depends on the crystal packing and biasing the regiochemistry necessitates precise crystal engineering. The pristine crystals of monomer1upon topochemical azide‐alkyne cycloaddition (TAAC) reaction give a 1 : 1 blend of 1,4‐ and 1,5‐triazole‐linked polymers due to the presence of two self‐sorted reactive conformers in the crystal. We designed a binary isomorphous cocrystal of monomer1and a structurally similar dummy molecule2to limit the number of reactive conformers of1to one and thus to get one type of polymer. Equimolar solution of1and2in chloroform‐acetone mixture gave two 1 : 1 cocrystalsCo‐IandCo‐II. TheCo‐II, a chloroform adduct, on heating undergoes desolvation and polymorphic transition toCo‐I.Co‐Iis isomorphic to1and2and possess self‐sorted arrays of1and2. HeatingCo‐Iresults in the TAAC polymerization giving 1,4‐triazolyl‐linked polymer of1selectively, showing the power of crystal engineering in regiocontrol.
Emerging Strategies for Gel Polymer Electrolytes with Improved Dual‐Electrode Side Regulation Mechanisms for Lithium‐Sulfur Batteries
Authors: Cui Yingyue , Li Jin , Yuan Xuedi , Liu Jiaxin , Zhang Haitao , Wu Hui , Cai Yingjun 
Published: August 2022

AbstractAlthough GPE still has the risk of shuttling due to the incomplete removal of liquid electrolytes compared to SPE, which has the most promise of eliminating polysulfide shuttling, researchers have made abundant efforts to eliminate as much of the polysulfide shuttling effect as possible while retaining the unique advantages of GPE. For example, physical barrier to polysulfides by improving the pore size of GPE or fabricating multidimensional structures by different preparation methods. Further chemical adsorption of polysulfides by adding nanofillers to increase polar sites to create polar‐polar interactions with polysulfides or to create Lewis acid‐base interactions. However, although chemical adsorption can indeed highly immobilize polysulfides, it still brings disadvantages such as loss of active material. Therefore, other researchers have employed GPE with ion‐selective permeability that has electrostatic repulsive force or steric hindrance to polysulfides to better inhibit polysulfide shuttling. However, modifying only the cathode side is not enough to enhance this overall properties of Li−S cells. These problems of poor Li+ transport, lithium dendrite growth, and poor SEI due to uneven lithium ion deposit on Li anode side still affect the overall performance of Li−S cells. Therefore, a GPE to improve these problems on the Li anode side is summarized below. Compared with an all‐solid electrolyte, GPE, which has a partially liquid electrolyte, clearly has advantages such as strong interfacial contact, good anode interface compatibility, and high flexibility. However, it is still not comparable to the ionic conductivity, etc. of pure liquid electrolyte only. Therefore, the problems on the lithium metal anode side are mainly focused on the lithium ion transport problems and the problems of lithium dendrite growth and inhomogeneous SEI at the lithium anode interface. Facing the problems in these two aspects, researchers have given many improvement solutions respectively. For the lithium ion transport problem, researchers have instead provided pathways for lithium ion transport by adding amorphous nanofibers or nanofillers to reduce the crystallinity of the polymer and improve the ionic conductivity. Alternatively, the migration number of lithium ions can be increased by limiting the anions in the electrolyte. As for the interfacial problems of lithium anodes, researchers have effectively suppressed the growth of lithium dendrites or inhomogeneous lithium plating/stripping phenomena mainly by adding nanofillers to increase the mechanical strength of GPE or by participating in the generation of SEI.
Substantive changes in the Latin anatomical nomenclature: Sometimes less is more
Authors: Neumann Paul E. 
Published: August 2022

AbstractSubstantivation, the use of an adjective or participle as a noun, is commonly used informally to shorten Latin anatomical terms. Dozens of substantives also appear in the international standard anatomical terminology. Most of these are venerable and familiar as nouns in Latin anatomical terms. Examples of Latin nouns derived directly or indirectly from Greek and Latin adjectives and participles are presented here. Although neologisms are said to enrich languages, careful consideration is required before adding to a technical vocabulary. Terms consisting of a substantive or displaying a substantive as the head noun may be vague to learners and nonspecialists.
Quality of integrated female oncofertility care is suboptimal: A patient‐reported measurement
Authors: van den Berg Michelle , Kaal Suzanne E. J. , Schuurman Teska N. , Braat Didi D. M. , Mandigers Caroline M. P. W. , Tol Jolien , Tromp Jacqueline M. , van der Vorst Maurice J. D. L. , Beerendonk Catharina C. M. , Hermens Rosella P. M. G. 
Published: August 2022

AbstractBackgroundClinical practice guidelines recommend to inform female cancer patients about their infertility risks due to cancer treatment. Unfortunately, it seems that guideline adherence is suboptimal. In order to improve quality of integrated female oncofertility care, a systematic assessment of current practice is necessary.MethodsA multicenter cross‐sectional survey study in which a set of systematically developed quality indicators was processed, was conducted among female cancer patients (diagnosed in 2016/2017). These indicators represented all domains in oncofertility care; risk communication, referral, counseling, and decision‐making. Indicator scores were calculated, and determinants were assessed by multilevel multivariate analyses.ResultsOne hundred twenty‐one out of 344 female cancer patients participated. Eight out of 11 indicators scored below 90% adherence. Of all patients, 72.7% was informed about their infertility, 51.2% was offered a referral, with 18.8% all aspects were discussed in counseling, and 35.5% received written and/or digital information. Patient's age, strength of wish to conceive, time before cancer treatment, and type of healthcare provider significantly influenced the scores of three indicators.ConclusionsCurrent quality of female oncofertility care is far from optimal. Therefore, improvement is needed. To achieve this, improvement strategies that are tailored to the identified determinants and to guideline‐specific barriers should be developed.
Assessment of Correlation Analysis, Phytochemical Profile, and Biological Activities of EndemicScorzoneraSpecies from Turkey
Authors: Sarıaltın Sezen Yılmaz , Acıkara Özlem Bahadır 
Published: August 2022

AbstractScorzoneraspecies belong to the Asteraceae family comprising more than 25000 species. The present study aimed to examine the phytochemical profiles and biological activities ofS. sandrasicaHartvig et Strid,S. coriaceaA. Duran&Aksoy, andS. ahmet‐duraniiMakbul&Coskuncelebi which are endemic species to Turkey. Flavonoids such as hyperoside, isoquercitrin, rutin, isoorientin, orientin, 7‐O‐methyl isoorientin, luteolin‐7‐O‐β‐glycoside, apigenin‐7‐O‐β‐glucoside, vitexin, isovitexin as well as caffeoylquinic acid derivatives including chlorogenic acid, 4,5‐O‐dicaffeoylquinic acid, and 1,5‐O‐dicaffeoylquinic acid contents were analyzed to clarify phytochemical content of the extracts. Aerial parts of the investigated extracts were determined as contain flavonoids in high amounts. Chlorogenic acid and its derivatives were detected in all investigated species, in varying amounts, both in the roots and aerial parts.S. coriaceaaerial parts contained the highest total phenolic and flavonoids. The strongest inhibitory activities on ABTS and DPPH radicals were also observed withS. coriaceaaerial parts by 8.07±0.28 and 13.94±0.53 μg/ml of IC50values, respectively. Total phenolic contents of the extracts were significantly correlated with DPPH (r=−0.9842, p=0.0004) and ABTS free radical scavenging (r=−0.9870, p=0.0003) and total antioxidant capacity (r=0.8173, p=0.0470), as well as total flavonoid contents (r=0.8820, p=0.0201).S. sandrasicaaerial parts andS. ahmet‐duraniiroots exhibited the greatest red blood cell membrane protection and protein denaturation inhibition, respectively. From the phytochemical point of view, all the selected species were analyzed for the first time.
New Diterpene and Indole Alkaloid Analogs from the Streptomyces malaysiensis SCSIO 41397
Authors: Xie Yuhui , Song Yue , Cong Ziwen , Zhao Kai , Pang Xiaoyan , Liu Yonghong , Huang Xiaolong , Wang Junfeng 
Published: August 2022

AbstractOne new cyclooctatin‐type diterpenoid, 15‐hydroxycyclooctatin (1), and one new indole alkaloid, streptoprenylindole D (3), along with 9 known compounds, were isolated from the Streptomyces malaysiensis SCSIO 41397. Their structures were established on the basis of spectroscopic analysis, optical rotation, and by a comparison with data from the literature. All isolated compounds were evaluated for their antibacterial (MRSA), antitumor (22Rv1 and PC‐3) and antiviral (HSV‐1/2) activities. According to the analysis of biological gene clusters in the whole genome, we preliminarily locate the gene clusters related to the synthesis of 15‐hydroxycyclooctatin (1).