bluuebunny/crossref_metadata_2025_split huggingface dataset:
Achieving Swollen yet Strengthened Hydrogels by Reorganizing Multiphase Network Structure
Authors: Huang Yiwan , Qian Sanyu , Zhou Ju , Chen Wenjun , Liu Tao , Yang Sheng , Long Shijun , Li Xuefeng 
Published: March 2023

AbstractMany living tissues, such as muscle, become mechanically stronger with growth. Yet, synthetic hydrogels usually exhibit an opposite size‐mechanical property relation, that is, swelling‐weakening behavior. Herein, a series of swollen yet strengthened polyampholyte (PA) hydrogels are developed via a simple metal‐ion solution soaking strategy. In this strategy, a dynamic PA hydrogel (with ionic bonds) is dialyzed in ZrOCl2 solutions (Step‐I) and deionized water (Step‐II) successively to obtain equilibrated hydrogels. Due to the specific Zr4+ ions and PA network structure, Step‐I takes several months with sample size and mechanical performance increasing continuously, while Step‐II only needs several days. Through this strategy, the resultant hydrogel networks are reorganized and eventually constructed by ionic and metalligand bonds, enabling the swelling yet strengthening behavior. A systematic study confirms that dialysis time in Step‐I and corresponding ZrOCl2 concentration can significantly affect the multiphase microstructures of the hydrogels, resulting in different mechanical enhancements. The optimized hydrogel possesses 39.2 MPa of Young's modulus and 3.7 MPa of tensile strength, which are 302 and 5.5 times these of the original PA gel, respectively. Despite distinct swelling, these hydrogels still mechanically surpass many existing high‐performance hydrogels. This study opens a novel pathway for fabricating swollen yet strengthened hydrogels.
Antimicrobial Hybrid Amphiphile via Dynamic Covalent Bonds Enables Bacterial Biofilm Dispersal and Bacteria Eradication
Authors: Zhan Yizhou , Hu Xiaowen , Li Yuanfeng , Wang Yaran , Chen Hua , Omolo Calvin Andeve , Govender Thirumala , Li Huaping , Huang Fan , Shi Linqi , Hu Xiaoli , Liu Yong 
Published: March 2023

AbstractTo tackle the problems caused by bacterial biofilms, herein, this study reports an antimicrobial hybrid amphiphile (aHA) via dynamic covalent bonds for eradicating staphylococcal biofilms. aHA is synthesized via iminoboronate ester formation between DETA NONOate (nitric oxide donor), 3 4‐dihydroxybenaldehyde, and phenylboronic acid‐modified ciprofloxacin (Cip). aHA can self‐assemble in aqueous solution with an ultra‐small critical aggregation concentration of 3.80 × 10–5 mm and high drug loading content of 73.8%. The iminoboronate ester is sensitive to the acidic and oxidative biofilm microenvironment, liberating nitric oxide and Cip that can synergistically eradicate bacterial biofilms. To this end, aHA assemblies efficiently eradicate staphylococcal infections and ameliorate inflammation in the murine peritoneal and subcutaneous infection models without any notable side effects on normal tissues. Collectively, the aHA assemblies may provide a facile and efficient alternative to the current development of anti‐biofilm therapies.
Nanoscaling and Heterojunction for Photocatalytic Hydrogen Evolution by Bimetallic Metal‐Organic Frameworks
Authors: Tang Liangming , Lin Qia‐Chun , Jiang Zhixin , Hu Jieying , Liu Zhiqing , Liao Wei‐Ming , Zhou Hua‐Qun , Chung Lai‐Hon , Xu Zhengtao , Yu Lin , He Jun 
Published: March 2023

AbstractUsing sunlight to manufacture hydrogen offers promising access to renewable clean energy. For this, low‐cost photocatalyst with effective light absorption and charge transfer are crucial, as current top‐performing systems often involve precious metals like Pd and Pt. An integrated organic–inorganic photocatalyst based on the cheap metals of iron and nickel are reported, wherein the metal ions form strong metal‐sulfur bonds with the organic linker molecules (2,5‐dimercapto‐1,4‐benzenedicarboxylic acid, H4DMBD) to generate 2D coordination sheets for promoting light absorption and charge transport. The 2D sheets are further modified through ionic metal‐carboxylate moieties to allow for functional flexibility. Thus, high‐surface‐area thin nanosheets of this 2D material, with an optimized Fe/Ni ratio (0.25:1.75), and in heterojunction with CdS nanosheet, achieve a stable photocatalytic hydrogen evolution rate of 12.15 µmol mg−1 h−1. This work synergizes coordination network design and nano‐assembly as a versatile platform for catalyzing hydrogen production and other sustainable processes.
Grafted MXenes Based Electrolytes for 5V‐Class Solid‐State Batteries
Authors: Chen Ze , Ma Xinyao , Hou Yue , Cui Huilin , Li Xinliang , Yang Qi , Huang Zhaodong , Wang Donghong , Dong Binbin , Fan Jun , Zhi Chunyi 
Published: March 2023

AbstractPolymer blends based solid polymer electrolytes (SPEs), combining the advantages of multiple polymers, are promising for the utilization of 5 V‐class cathodes (e.g., LiCoMnO4 (LCMO)) with enhanced safety. However, severe macro‐phase separation with defects and voids in polymer blends restrict the electrochemical stability and ionic migration of SPEs. Herein, inorganic compatibilizer polyacrylonitrile grafted MXene (MXene‐g‐PAN) is exploited to improve the miscibility of the poly(vinylidene fluoride‐co‐hexafluoropropylene) (PVHF)/PAN blends and suppress the consolidation of phase particles. The resulting SPE exhibits a high anodic stability with an ionic conductivity of 2.17 × 10−4 S cm−1, enabling a stable and reversible Li platting/stripping (over 2500 h). The fabricated solid Li‖LCMO cell delivers a 5.1 V discharge voltage with a decent capacity (131 mAh g−1) and cycling performance. Subsequently, the solid all‐in‐one graphite‖LCMO battery is also constructed to extend the application of MXene based SPEs in flexible batteries. Benefiting from the interface‐less design, outstanding mechanical flexibility and stability is achieved in the battery, which can endure various deformations with a low‐capacity loss (< ≈10%). This study signifies a significant development on solid flexible lithium ion batteries with enhanced performance, stability, and reliability by investigating the miscibility of polymer blends, benefiting for the design of high‐performance SPEs.
A Structure Self‐Healing Li‐Rich Cathode Achieved by Lithium Supplement of Li‐Rich LLZO Coating
Authors: Wei Youri , Cheng Jun , Li Deping , Li Yuanyuan , Zeng Zhen , Liu Hongbin , Zhang Hongqiang , Ji Fengjun , Geng Ximing , Lu Jingyu , Ci Lijie 
Published: March 2023

AbstractLithium‐rich manganese‐based cathode materials (LLMO) are considered as the promising candidates for realizing high energy density lithium‐ion batteries. However, the severe structure deterioration and capacity fading hinder their large‐scale application. Herein, an innovative electrochemical lithium supplement strategy is put forward to inhibit the structure collapse and enhance the cycling stability of Lithium‐rich manganese‐based cathodes. Besides, combining with the superior Li‐ion conductor Li6.25La3Zr2Al0.25O12 (LLZAO), remarkable rate capability is achieved. As a result, a capacity retention of 95.7% after 300 cycles at 1.0 C (1.0 C = 200 mA g−1), as well as a stable cycling at 5.0 C with discharge capacity of 136.9 mAh g−1, are harvested. Moreover, the excess lithium ions in LLZAO mitigate the spinel‐like phase transformation via inserting into the lithium layer and stabilizing the cathode structure. In addition, the lithium ions migration behavior in the elaborated cathode is thoroughly expounded and the correlation between diffusion kinetics and LLZAO is revealed. These findings boost the updating of LLMO and pave a new pathway for stabilizing LLMO structures.
Tunable Fluorescent Artificial Receptor Biosensor Based on Programmable Lanthanide Metal‐Organic Framework for Highly Selective Neurotransmitter Detection
Authors: Yu Long , Feng Lixiang , Wei Zhongyu , Wang Shuo , Feng Yumin , Shen Yongjin , Cai Junlong , Wu Jianyuan , Xiao Yuxiu 
Published: March 2023

AbstractThe design and fabrication of artificial receptors suitable for highly selective and sensitive sensing of neurotransmitters in aqueous media remains a challenge, especially for the significant biomarker dopamine (DA) for neurological diseases. Herein, a novel modular fluorescent artificial receptor design strategy based on multiple parameters programming engineering is proposed. The optimal artificial receptor DA biosensor based on fluorescent lanthanide metal‐organic frameworks (Ln‐MOFs) is coded by adjusting the modular design parameters such as preparation solvents and ligands. It is prepared by Eu ion and ligand 1,2,4,5‐benzenetetracarboxylic acid (BTEC) in DMF/water, which can selectively recognize DA even in complex biological fluids, without the interference of other structurally similar neurotransmitters such as levodopa, serotonin and noradrenaline, and the limit of detection for DA is as low as 10 nm. Ln‐MOFs are believed to uniquely utilize their tunable host‐guest interactions (specific recognition) and confinement catalysis capabilities to achieve highly selective and dual‐response DA detection, similar to lock‐and‐key theory, which is supported by experiments and density functional theory calculations. Fluorescent artificial receptors based on Ln‐MOFs are proved to have broad potential for label‐free detection, imaging and diagnosis. They can overcome the long‐standing limitations of complex synthetic biosensors, and bringing new solutions to personalized medicine.
Polymer‐Encapsulated Halide Perovskite Color Converters to Overcome Blue Overshoot and Cyan Gap of White Light‐Emitting Diodes
Authors: Peng Min , Sun Shibin , Xu Bin , Deng Zhengtao 
Published: March 2023

AbstractCurrently, the most popular way to manufacture white light‐emitting diodes (WLEDs) is based on blue‐emitting InGaN LED chips (440–460 nm) and yellow‐emitting phosphor coating (520–700 nm) to produce white light lighting. However, because conventional white WLEDs lack the uniformly distributed continuous emission spectrum compared to natural sunlight: “blue overshoot” (extra 440–460 nm blue‐light can cause damage to the retina) and “cyan gap” (470–520 nm wavelength range). Here, a novel strategy to “kill two birds with one stone” is reported: using the stable and bright polymer encapsulated perovskite nanocrystals (PNCs) composite films as the cyan color converters that efficiently absorb the “blue overshoot” and effectively emit the cyan light to fill the “cyan gap”. A series of polymer‐encapsulated PNC films is achieved that can reach very high photoluminescence quantum yield (PL QY) of 90–95% under 450 nm blue‐light excitation. Importantly, both 370 nm UV‐excited WLED and 455 nm blue‐excited WLED devices are constructed that exhibit smoothly and evenly distributed white light without blue overshoot and cyan gap, which was not achieved before for blue‐excited cyan‐emissive materials. This study paves the way toward the application of PNC color converters in the next generation full‐visible‐spectrum WLED lighting that mimic the natural daylight.
Experimental Study on Repairing Peripheral Nerve Defects with Novel Bionic Tissue Engineering
Authors: Qi Tong , Zhang Xu , Gu Xiaosong , Cui Shusen 
Published: March 2023

AbstractPeripheral nerve defects are a worldwide problem, and autologous nerve transplantation is currently the gold‐standard treatment for them. Tissue‐engineered nerve (TEN) grafts are widely considered promising methods for the same, and have attracted much attention. To improve repair, the incorporation of bionics into TEN grafts has become a focus of research. In this study, a novel bionic TEN graft with a biomimetic structure and composition is designed. For this purpose, a chitin helical scaffold is fabricated by means of mold casting and acetylation using chitosan as the raw material, following which a fibrous membrane is electrospun on the outer layer of the chitin scaffold. The lumen of the structure is filled with human bone mesenchymal stem cell‐derived extracellular matrix and fibers to provide nutrition and topographic guidance, respectively. The prepared TEN graft is then transplanted to bridge 10 mm sciatic nerve defects in rats. Morphological and functional examination shows that the repair effects of the TEN grafts and autografts are similar. The bionic TEN graft described in this study shows great potential for application and offers a new way to repair clinical peripheral nerve defects.
Microtopography‐Guided Double‐Layer Cross Structure for a Terahertz Multiband Amplitude Modulator
Authors: Li Tong , Chen Hang , Zhang Jia , Wang Zhenlong 
Published: March 2023

AbstractTerahertz (THz) modulator can be used to modulate the amplitude and frequency of THz wave. A THz multiband amplitude modulator based on temperature control is proposed in this study. The metamaterial structure of proposed modulator is a double‐layer cross structure which attached on a silicon substrate, and the cross‐distribution of different materials in top and middle layer is Cu @ SiO2 and SiO2 @ VO2, respectively. To prepare the modulator, a microtopographic substrate‐guided method with low‐cost and high accuracy capacities is proposed. Finally, the proposed modulator exhibits above 70% transmittance in 1.31–1.36 THz, 1.55–1.60 THz, and 1.76–1.79 THz, respectively, at 35 °C After temperature rises to 70 °C, transmittance decreases below 0.1 in 1–2 THz. The similarity of the experimental and simulated transmission is up to 85.67%, and the mean modulation depth (MD) is 0.73. The performance can fulfill the applications in THz amplitude modulator, and due to the large modulation depth of transmission, the proposed modulator can be used as a filter switch. It also indicates the proposed method can be effectively applied in other multilayer composite materials preparation.
Plasma‐Based Synthesis of Freestanding Graphene from a Natural Resource for Sensing Application
Authors: Zafar M. Adeel , Liu Yang , Hernandez Francisco C. Robles , Varghese Oomman K. , Jacob Mohan V 
Published: March 2023

AbstractAtmospheric pressure microwave plasma has the lead in synthesizing freestanding and scalable graphene within seconds without the need for high vacuum and temperature. However, the process is limited in utilizing chemical sources for synthesis, such as methane and ethanol. Herein, the usage of an extract of a sustainable precursor, that is, Melaleuca alternifolia, commonly known as tea tree, is for the first time reported to synthesize graphene nanosheets in atmospheric pressure microwave plasma. The synthesis is carried out in a single step at a remarkably low microwave power of 200 W. The morphology, structure, and electrochemical properties of graphene are studied using state‐of‐the‐art characterization techniques such as Raman spectroscopy, X‐ray diffraction, transmission electron microscopy (TEM) and electrochemical impedance spectroscopy. The TEM images reveal the presence of a combination of nanostructures such as nano‐horns, nano‐rods, or nano‐onions consisting of multi‐layer graphitic architectures. An excellent sensing capability of as‐synthesized graphene is demonstrated through the detection of diuron herbicide. A commendable linear range of 20 µm to 1 mm and a limit of detection of 5 µm of diuron is recorded.
Plasmonic Metasurface Integrated Black Phosphorus‐Based Mid‐Infrared Photodetector with High Responsivity and Speed
Authors: Yadav Shyam Narayan Singh , Chen Po‐Liang , Liu Chang Hua , Yen Ta‐Jen 
Published: March 2023

AbstractBlack Phosphorus (BP), a van der Waals (vdW) semiconducting material, is studied intensively due to its unique structural and anisotropic optical properties. BP exhibits optical anisotropy with thickness tunable direct bandgap from 0.3–2.0 eV. Many BP‐based photodetectors operating in the mid‐infrared (MIR) band are proposed, but their performance is still limited due to the small optical absorption cross section at room temperature. In this work, a plasmonic metasurface that has localized surface plasmon resonance (LSPR) at 3.7 µm is designed, matching well with the band edge of a BP flake and field confinement around the edge of Au‐disk as confirmed by finite difference time domain simulation and Fourier‐transform infrared spectroscopy measurement results. In addition, a BP flake is integrated on the plasmonic metasurface and a significant quenching (twelve‐fold) is observed in the photoluminescence owing to the Förster resonance energy transfer effect induced by dipole–dipole coupling. Following that, a BP‐based MIR photodetector is fabricated on the plasmonic metasurface. Here, the demonstrated BP/plasmonic metasurface‐based photodetector achieves the peak responsivity of 495.85 mAW−1 and ultrahigh operation speed (>10 MHz) at the power of 8.55 µW under 3.7 µm incident wavelength. This demonstrated photodetector opens a new opportunity for optoelectronic applications in the MIR region.
Light Reconfigurable Topological Optical Phase Structure Enabled by a Photoresponsive Chiral System
Authors: Wang Xiao‐Qian , Tam Alwin Ming‐Wai , Yang Wei‐Qiang , Kiselev Alexei D. , Shen Dong , Chigrinov Vladimir , Kwok Hoi‐Sing , Li Quan 
Published: March 2023

AbstractThe ability to establish significant phase modulation at low applied field provides a promising route toward polarization control and wavefront shaping for liquid‐crystal‐based devices. Owing to the polarization‐selective reflectivity of chiral liquid crystals (CLCs), reflective wavefront shaping via geometric phase is demonstrated when a circularly polarized light is Bragg reflected by a spatially orientated chiral layer. Nowadays, photoresponsive CLCs have attracted extensive attention due to their exotic feature that endows the CLC devices with the capability of electric‐free remote control. Despite the mature photoresponsive CLC materials and the sophisticated reflective geometric phase devices, a light‐induced topological optical phase modulation for a transmissive wave exiting a CLC cell remains elusive. Here, with the employment of a photosensitive chiral dopant, a hybrid aligned photoresponsive CLC system, demonstrating the simultaneous light modulation of topological geometric phase and dynamic phase via helical pitch manipulation is established. The continuous dual‐phase modulation engenders a smooth optically controllable diffraction efficiency (i.e., from <5% to >90%) of the proposed light‐reconfigurable CLC geometric phase optical element prototypes with multistable diffractive behavior, thus launching a paradigm shift for the application of novel liquid‐crystal photonic devices in the field of all‐optical polarization and spin processing.
Electrohydrodynamically Printed High‐resolution Arrays Based on Stabilized CsPbBr3 Quantum Dot Inks
Authors: Yang Xiao , Yan Zi‐Jun , Zhong Chen‐Ming , Jia Hui , Chen Guo‐Long , Fan Xiao‐Tong , Wang Shu‐Li , Wu Ting‐Zhu , Lin Yue , Chen Zhong 
Published: March 2023

AbstractHigh‐resolution perovskite quantum dots (PeQDs) arrays printed by electrohydrodynamic (EHD) inkjet printing show great application prospects in fields of micro‐display. Commonly, EHD inkjet requires a polar system for printing but it easily quenches the PeQDs. Meanwhile, the mismatch of solvent parameters causes uneven surface morphology and printing instability. In this work, a morphology uniformization strategy of a nonpolar binary solvent system of 1,3,5‐triethylbenzene and n‐tetradecane is proposed to prepare the didodecyldimethylammonium bromide (DDAB)/PbBr2 passivated PeQDs inks. When the solvent volume ratio is 5:5, the photoluminescence quantum yield (PLQY) of the ink reaches 94.06%. Benefiting from the match of boiling point, surface tension, and dielectric constant of ink, after the EHD inkjet printing, the line width of continuous smooth line arrays is as narrow as 2.0 µm and the coffee effect of dot arrays is well inhibited. Meanwhile, derived from the strong electrostatic interaction between the π‐electron structure of 1,3,5‐triethylbenzene and DDA+, the ink exhibits high stability. Moreover, the high‐resolution logo and miniature quick responsecode by EHD inkjet printing reach 22 718 dpi, far higher than that of the reported micro‐LED. This work paves the way for high‐resolution pixel arrays of micro‐display.
Self‐Healing Stress Sensors: Coupling Stress‐Sensing Performance with Dynamic Chemistry
Authors: Wang Yuyan , Zhang Xinxing 
Published: March 2023

AbstractFlexible stress sensors that can convert different forces into electrical signals show great potential for applications in wearable electronics and electronic skin. The integration of self‐healing capacity into stress‐sensing materials can boost their reliability, stability, and long‐term performance. There have been many reviews describing the progress of research on self‐healing stress sensors. However, most have typically investigated the self‐healing design separately from the sensing mechanism. The review focuses on how the latest advances in coupling stress‐sensing performance with dynamic chemistry balance self‐healing and sensing performance. Then, based on sensing structures and self‐healing dynamic bonds, the design strategies, and preparation methods of self‐healing sensors and their advantages and disadvantages in recent years are summarized in detail. It is anticipated that this work will provide insights and guidance for the future development of sensors with synergistically enhanced self‐healing and sensing properties and their application designs.
Broadband Solar Metamaterial Absorbers Empowered by Transformer‐Based Deep Learning
Authors: Chen Wei , Gao Yuan , Li Yuyang , Yan Yiming , Ou Jun‐Yu , Ma Wenzhuang , Zhu Jinfeng 
Published: March 2023

AbstractThe research of metamaterial shows great potential in the field of solar energy harvesting. In the past decade, the design of broadband solar metamaterial absorber (SMA) has attracted a surge of interest. The conventional design typically requires brute‐force optimizations with a huge sampling space of structure parameters. Very recently, deep learning (DL) has provided a promising way in metamaterial design, but its application on SMA development is barely reported due to the complicated features of broadband spectrum. Here, this work develops the DL model based on metamaterial spectrum transformer (MST) for the powerful design of high‐performance SMAs. The MST divides the optical spectrum of metamaterial into N patches, which overcomes the severe problem of overfitting in traditional DL and boosts the learning capability significantly. A flexible design tool based on free customer definition is developed to facilitate the real‐time on‐demand design of metamaterials with various optical functions. The scheme is applied to the design and fabrication of SMAs with graded‐refractive‐index nanostructures. They demonstrate the high average absorptance of 94% in a broad solar spectrum and exhibit exceptional advantages over many state‐of‐the‐art counterparts. The outdoor testing implies the high‐efficiency energy collection of about 1061 kW h m−2 from solar radiation annually. This work paves a way for the rapid smart design of SMA, and will also provide a real‐time developing tool for many other metamaterials and metadevices.