jablonkagroup/rise_ai_scientists huggingface dataset:
Authors: Tian‐Run Lv | Wenhai Zhang | Yang Yaqiong | Jia‐Chen Zhang | Ming‐Jie Yin | Zhigang Yin | Ken‐Tye Yong | Quan‐Fu An
Source: Small (review, 2023-04-17)
Field: Materials Science — Polymers and Plastics

Micro/Nano‐Fabrication of Flexible Poly(3,4‐Ethylenedioxythiophene)‐Based Conductive Films for High‐Performance Microdevices With the increasing demands for novel flexible organic electronic devices, conductive polymers are now becoming the rising star for reaching such targets, which has witnessed significant breakthroughs in the fields of thermoelectric devices, solar cells, sensors, and hydrogels during the past decade due to their outstanding conductivity, solution-processing ability, as well as tailorability. However, the commercialization of those devices still lags markedly behind the corresponding research advances, arising from the not high enough performance and limited manufacturing techniques. The conductivity and micro/nano-structure of conductive polymer films are two critical factors for achieving high-performance microdevices. In this review, the state-of-the-art technologies for developing organic devices by using conductive polymers are comprehensively summarized, which will begin with a description of the commonly used synthesis methods and mechanisms for conductive polymers. Next, the current techniques for the fabrication of conductive polymer films will be proffered and discussed. Subsequently, approaches for tailoring the nanostructures and microstructures of conductive polymer films are summarized and discussed. Then, the applications of micro/nano-fabricated conductive films-based devices in various fields are given and the role of the micro/nano-structures on the device performances is highlighted. Finally, the perspectives on future directions in this exciting field are presented. Materials science ; Nanotechnology ; Conductive polymer ; Fabrication ; Electrical conductor ; Nano- ; Polymer ; Composite material Conducting polymers and applications ; Advanced Sensor and Energy Harvesting Materials ; Organic Electronics and Photovoltaics
Authors: Abdullahi Abbas Adam | Hassan Soleimani | John Ojur Dennis | Osamah Aldaghri | Ahmed Alsadig | Khalid Hassan Ibnaouf | Bashir Abubakar Abdulkadir | Ismael A. Wadi | Vipin Cyriac | Muhammad Fadhlullah Bin Abd. Shukur
Source: Molecules (article, 2023-04-14)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Insight into the Effect of Glycerol on Dielectric Relaxation and Transport Properties of Potassium-Ion-Conducting Solid Biopolymer Electrolytes for Application in Solid-State Electrochemical Double-Layer Capacitor The increased interest in the transition from liquid to solid polymer electrolytes (SPEs) has driven enormous research in the area polymer electrolyte technology. Solid biopolymer electrolytes (SBEs) are a special class of SPEs that are obtained from natural polymers. Recently, SBEs have been generating much attention because they are simple, inexpensive, and environmentally friendly. In this work, SBEs based on glycerol-plasticized methylcellulose/pectin/potassium phosphate (MC/PC/K<sub>3</sub>PO<sub>4</sub>) are investigated for their potential application in an electrochemical double-layer capacitor (EDLC). The structural, electrical, thermal, dielectric, and energy moduli of the SBEs were analyzed via X-ray diffractometry (XRD), Fourier transforms infrared spectroscopy (FTIR), electrochemical impedance spectroscopy (EIS), transference number measurement (TNM), and linear sweep voltammetry (LSV). The plasticizing effect of glycerol in the MC/PC/K<sub>3</sub>PO<sub>4</sub>/glycerol system was confirmed by the change in the intensity of the samples' FTIR absorption bands. The broadening of the XRD peaks demonstrates that the amorphous component of SBEs increases with increasing glycerol concentration, while EIS plots demonstrate an increase in ionic conductivity with increasing plasticizer content owing to the formation of charge-transfer complexes and the expansion of amorphous domains in polymer electrolytes (PEs). The sample containing 50% glycerol has a maximal ionic conductivity of about 7.5 × 10<sup>-4</sup> scm<sup>-1</sup>, a broad potential window of 3.99 V, and a cation transference number of 0.959 at room temperature. Using the cyclic voltammetry (CV) test, the EDLC constructed from the sample with the highest conductivity revealed a capacitive characteristic. At 5 mVs<sup>-1</sup>, a leaf-shaped profile with a specific capacitance of 57.14 Fg<sup>-1</sup> was measured based on the CV data. Cyclic voltammetry ; Materials science ; Dielectric spectroscopy ; Ionic conductivity ; Electrolyte ; Fourier transform infrared spectroscopy ; Chemical engineering ; Amorphous solid ; Analytical Chemistry (journal) ; Linear sweep voltammetry ; Glass transition ; Polymer ; Electrochemistry ; Chemistry ; Organic chemistry ; Electrode ; Composite material ; Physical chemistry Supercapacitor Materials and Fabrication ; Advanced Battery Materials and Technologies ; Conducting polymers and applications
Authors: Saddam Hussain | Mohammed Zourob
Source: Small (review, 2023-10-06)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Solid‐State Cholesteric Liquid Crystals as an Emerging Platform for the Development of Optical Photonic Sensors Over the past decade, solid-state cholesteric liquid crystals (CLC<sub>solid</sub> ) have emerged as a promising photonic material, heralding new opportunities for the advancement of optical photonic biosensors and actuators. The periodic helical structure of CLC<sub>solid</sub> s gives rise to their distinctive capability of selectively reflecting incident radiation, rendering them highly promising contenders for a wide spectrum of photonic applications. Extensive research is conducted on utilizing CLC<sub>solid</sub> 's optical characteristics to create optical sensors for bioassays, diagnostics, and environmental monitoring. This review provides an overview of emerging technologies in the field of interpenetrating polymeric network-CLC<sub>solid</sub> (IPN) and CLC<sub>solid</sub> -based optical sensors, including their structural designs, processing, essential materials, working principles, and fabrication methodologies. The review concludes with a forward-looking perspective, addressing current challenges and potential trajectories for future research. Nanotechnology ; Photonics ; Materials science ; Solid-state ; Photonic crystal ; Fabrication ; Liquid crystalline ; Liquid crystal ; Optoelectronics ; Engineering physics ; Engineering Liquid Crystal Research Advancements ; Photonic Crystals and Applications ; Nonlinear Optical Materials Studies
Authors: Jordan Rio | Haosheng Liang | Lionel Perrin | Luca Alessandro Perego | Laurence Grimaud | Pierre‐Adrien Payard
Source: ACS Catalysis (article, 2023-08-15)
Field: Chemistry — Organic Chemistry

We Already Know Everything about Oxidative Addition to Pd(0): Do We? The oxidative addition (OA) of organic electrophiles to Pd(0) is a fundamental step in organopalladium chemistry and plays a key role in palladium-catalyzed cross-coupling reactions. This perspective summarizes selected mechanistic studies of the Pd(0)-to-Pd(II) OA process involving organic halides and pseudohalides with a focus on systems relevant to catalytic reactions. The results are organized according to the nature of supporting ligands, extracting general trends, and describing the most relevant examples. The formation of active species from precatalysts is surveyed, as well as the influence of different species that could be present under catalytic conditions and influence the OA process, providing guidelines to facilitate the understanding and the improvement of catalytic reactions. Organopalladium ; Catalysis ; Chemistry ; Oxidative addition ; Palladium ; Electrophile ; Combinatorial chemistry ; Halide ; Oxidative phosphorylation ; Organic chemistry ; Biochemistry Catalytic Cross-Coupling Reactions ; Catalytic C–H Functionalization Methods ; Asymmetric Hydrogenation and Catalysis
Authors: Chengxiang Yang | Wei Liu | Qi You | Xiuxian Zhao | Shanshan Liu | Liang Xue | Junhua Sun | Xuchuan Jiang
Source: Nanomaterials (review, 2023-05-23)
Field: Materials Science — Materials Chemistry

Recent Advances in Light-Conversion Phosphors for Plant Growth and Strategies for the Modulation of Photoluminescence Properties The advent of greenhouses greatly promoted the development of modern agriculture, which freed plants from regional and seasonal constraints. In plant growth, light plays a key role in plant photosynthesis. The photosynthesis of plants can selectively absorb light, and different light wavelengths result in different plant growth reactions. Currently, light-conversion films and plant-growth LEDs have become two effective ways to improve the efficiency of plant photosynthesis, among which phosphors are the most critical materials. This review begins with a brief introduction of the effects of light on plant growth and the various techniques for promoting plant growth. Next, we review the up-to-date development of phosphors for plant growth and discussed the luminescence centers commonly used in blue, red and far-red phosphors, as well as their photophysical properties. Then, we summarize the advantages of red and blue composite phosphors and their designing strategies. Finally, we describe several strategies for regulating the spectral position of phosphors, broadening the emission spectrum, and improving quantum efficiency and thermal stability. This review may offer a good reference for researchers improving phosphors to become more suitable for plant growth. Phosphor ; Plant growth ; Photosynthesis ; Photoluminescence ; Light-emitting diode ; Environmental science ; Materials science ; Greenhouse ; Blue light ; Nanotechnology ; Optoelectronics ; Computer science ; Chemistry ; Botany ; Biology Luminescence Properties of Advanced Materials ; Carbon and Quantum Dots Applications ; Luminescence and Fluorescent Materials
Authors: Jing Zhao | Jiaxian Wang | Lizhen Gao | Weibin Qiu
Source: Nanomaterials (article, 2023-01-27)
Field: Materials Science — Electronic, Optical and Magnetic Materials

High-Sensitivity Sensing in All-Dielectric Metasurface Driven by Quasi-Bound States in the Continuum Quasi-bound states in the continuum (quasi-BIC) in all-dielectric metasurfaces provide a crucial platform for sensing due to its ability to enhance strong matter interactions between light-waves and analytes. In this study, a novel high-sensitivity all-dielectric sensor composed of a periodic array of silicon (Si) plates with square nanoholes in the continuous near-infrared band is theoretically proposed. By adjusting the position of the square nanohole, the symmetry-protected BIC and Friedrich-Wintgen BIC (FW-BIC) can be excited. The torodial dipole (TD) and electric quadruple (EQ) are demonstrated to play a dominating role in the resonant modes by near-field analysis and multipole decomposition. The results show that the sensitivity, the Q-factor, and the corresponding figure of merit (FOM) can simultaneously reach 399 nm/RIU (RIU is refractive index unit), 4959, and 1281, respectively. Compared with other complex nanostructures, the proposed metasurface is more feasible and practical, which may open up an avenue for the development of ultrasensitive sensors. Multipole expansion ; Dielectric ; Figure of merit ; Refractive index ; Sensitivity (control systems) ; Physics ; Dipole ; Nanosphere lithography ; Excited state ; Electric field ; Optics ; Optoelectronics ; Materials science ; Atomic physics ; Quantum mechanics Metamaterials and Metasurfaces Applications ; Plasmonic and Surface Plasmon Research ; Advanced Antenna and Metasurface Technologies
Authors: Mingxuan Li | Mehdi Zarei | Khashayar Mohammadi | S. Brett Walker | Melbs LeMieux | Paul W. Leu
Source: ACS Applied Materials & Interfaces (article, 2023-06-14)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Silver Meshes for Record-Performance Transparent Electromagnetic Interference Shielding We present a simulation and experimental study of silver meshes to determine their performance for transparent electromagnetic interference (EMI) shielding. Simulations were employed to study the effects of the silver mesh's width, pitch, and thickness on EMI shielding efficiency (SE) in the 8-18 GHz frequency range and transparency in the visible spectrum. We demonstrate a scalable, facile fabrication method that involves embedding meshes in glass by etching trenches in glass and filling and curing reactive particle-free silver ink in these trenches. Our silver meshes achieve 58.4 dB EMI SE with 83% visible light transmission and 48.3 dB EMI SE with 90.3% visible transmission. The combination of high-conductivity silver, small widths (1.3 to 5 μm), and large thicknesses (0.5 to 2.0 μm) enables the best performance of metal meshes as well as single-sided shielding materials for transparent EMI shielding, as reported in the literature. EMI ; Materials science ; Electromagnetic shielding ; Polygon mesh ; Electromagnetic interference ; Fabrication ; Optoelectronics ; Optics ; Composite material ; Telecommunications ; Computer science Electromagnetic wave absorption materials ; Advanced Antenna and Metasurface Technologies ; Electromagnetic Compatibility and Noise Suppression
Authors: Petr Slavík | Benjamin R. Trowse | Peter O’Brien | David K. Smith
Source: Nature Chemistry (article, 2023-02-16)
Field: Materials Science — Biomaterials

Organogel delivery vehicles for the stabilization of organolithium reagents Organolithium reagents are a vital tool in modern organic chemistry, enabling the synthesis of carbon-carbon bonds. However, due to their high reactivity, low temperatures, inert atmospheres and strictly dried solvents are usually necessary for their use. Here we report an encapsulating method for the stabilization of sensitive organolithium reagents-PhLi, n-BuLi and s-BuLi-in a low-cost hexatriacontane (C<sub>36</sub>H<sub>74</sub>) organogel. The use of this technology is showcased in nucleophilic addition reactions under ambient conditions, low-temperature bromine-lithium exchange, ortho-lithiation and C-H functionalization. The gel substantially enhances organolithium stability, allows simple storage, handling and delivery, and enables reproducible reagent portioning. The use of gels as easily divided delivery vehicles for hazardous organometallics has the potential to transform this area of synthetic chemistry, making these powerful reactions safer and more accessible to non-specialist researchers, and enabling the more widespread use of these common synthetic methods. Chemistry ; Reagent ; Combinatorial chemistry ; Nanotechnology ; Organic chemistry Supramolecular Self-Assembly in Materials ; Chemical Synthesis and Analysis ; Supramolecular Chemistry and Complexes
Authors: Syed Shujaat Karim | Abubakar Sudais | Muhammad Salman Shah | Sarah Farrukh | Subhan Ali | Mubashir Ahmed | Zarrar Salahuddin | Xianfeng Fan
Source: Fuel (review, 2023-06-13)
Field: Materials Science — Materials Chemistry

A contemplating review on different synthesis methods of 2D-Molybdenum disulfide (MoS2) nanosheets Molybdenum disulfide ; Nanotechnology ; Nanomaterials ; Electronics ; Materials science ; Computer science ; Engineering ; Electrical engineering 2D Materials and Applications ; MXene and MAX Phase Materials ; Graphene research and applications
Authors: Nujud Mohammed Badawi | Mamta Bhatia | S. Ramesh | K. Ramesh | Mufsir Kuniyil | Mohammed Rafi Shaik | Mujeeb Khan | Baji Shaik | Syed Farooq Adil
Source: Polymers (article, 2023-01-22)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Self-Healing, Flexible and Smart 3D Hydrogel Electrolytes Based on Alginate/PEDOT:PSS for Supercapacitor Applications Hydrogel electrolytes for energy storage devices have made great progress, yet they present a major challenge in the assembly of flexible supercapacitors with high ionic conductivity and self-healing properties. Herein, a smart self-healing hydrogel electrolyte based on alginate/poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (alginate/PEDOT:PSS)(A/P:P) was prepared, wherein H<sub>2</sub>SO<sub>4</sub> was employed as a polymeric initiator, as well as a source of ions. PEDOT:PSS is a semi-interpenetrating network (IPN) that has been used in recent studies to exhibit quick self-healing properties with the H₂SO₃ additive, which further improves its mechanical strength and self-healing performance. A moderate amount of PEDOT:PSS in the hydrogel (5 mL) was found to significantly improve the ionic conductivity compared to the pure hydrogel of alginate. Interestingly, the alginate/PEDOT:PSS composite hydrogel exhibited an excellent ability to self-heal and repair its original composition within 10 min of cutting. Furthermore, the graphite conductive substrate-based supercapacitor with the alginate/PEDOT:PSS hydrogel electrolyte provided a high specific capacitance of 356 F g<sup>-1</sup> at 100 mV/s g<sup>-1</sup>. The results demonstrate that the A/P:P ratio with 5 mL PEDOT:PSS had a base sheet resistance of 0.9 Ω/square. This work provides a new strategy for designing flexible self-healing hydrogels for application in smart wearable electronics. PEDOT:PSS ; Supercapacitor ; Materials science ; Self-healing hydrogels ; Electrolyte ; Self-healing ; Chemical engineering ; Composite number ; Capacitance ; Ionic conductivity ; Nanotechnology ; Composite material ; Polymer chemistry ; Polymer ; Electrode ; Chemistry Supercapacitor Materials and Fabrication ; Advanced Sensor and Energy Harvesting Materials ; Conducting polymers and applications
Authors: Runnan Wang | Hao Zhang | Jing Sun | Zhong‐Min Su
Source: Inorganic Chemistry Frontiers (article, 2023-11-17)
Field: Chemistry — Inorganic Chemistry

Eu<sup>3+</sup>-MOF fluorescence sensor based on a dual-ligand strategy for visualised detection of an anthrax biomarker 2,6-pyridine dicarboxylic acid A dual-ligand ratiometric fluorescence sensor based on lanthanide–metal–organic frameworks was successfully synthesised for the sensitive and convenient detection of DPA. Fluorescence ; Lanthanide ; Ligand (biochemistry) ; Metal-organic framework ; Chemistry ; Biomarker ; Pyridine ; Organic chemistry ; Biochemistry ; Receptor ; Physics Metal-Organic Frameworks: Synthesis and Applications ; Luminescence and Fluorescent Materials ; Molecular Sensors and Ion Detection
Authors: Alexander Dallinger | Felix Steinwender | Matthias Gritzner | Francesco Greco
Source: ACS Applied Nano Materials (article, 2023-07-10)
Field: Materials Science — Surfaces, Coatings and Films

Different Roles of Surface Chemistry and Roughness of Laser-Induced Graphene: Implications for Tunable Wettability The control of surface wettability is a technological key aspect and usually poses considerable challenges connected to high cost, nanostructure, and durability, especially when aiming at surface patterning with high and extreme wettability contrast. This work shows a simple and scalable approach by using laser-induced graphene (LIG) and a locally inert atmosphere to continuously tune the wettability of a polyimide/LIG surface from hydrophilic to superhydrophobic (Φ ∼ 160°). This is related to the reduced amount of oxygen on the LIG surface, influenced by the local atmosphere. Furthermore, the influence of the roughness pattern of LIG on the wettability is investigated. Both approaches are combined, and the influence of surface chemistry and roughness is discussed. Measurements of the roll-off angle show that LIG scribed in an inert atmosphere with a low roughness has the highest droplet mobility with a roll-off angle of Φ<sub>RO</sub> = (1.7 ± 0.3)°. The superhydrophobic properties of the samples were maintained for over a year and showed no degradation after multiple uses. Applications of surfaces with extreme wettability contrast in millifluidics and fog basking are demonstrated. Overall, the proposed processing allows for the continuous tuning and patterning of the surface properties of LIG in a very accessible fashion useful for "lab-on-chip" applications. Wetting ; Surface roughness ; Materials science ; Graphene ; Surface finish ; Polyimide ; Inert gas ; Contact angle ; Nanotechnology ; Surface modification ; Inert ; Nanostructure ; Chemical engineering ; Atmosphere (unit) ; Composite material ; Chemistry ; Layer (electronics) ; Organic chemistry Surface Modification and Superhydrophobicity ; Electrohydrodynamics and Fluid Dynamics ; Advanced Sensor and Energy Harvesting Materials
Authors: Athira Rajan | Sibi Kaithakkal Solaman | Subodh Ganesanpotti
Source: ACS Applied Materials & Interfaces (article, 2023-01-19)
Field: Materials Science — Electronic, Optical and Magnetic Materials

Design and Fabrication of Layered Electromagnetic Interference Shielding Materials: A Cost-Effective Strategy for Performance Prediction and Efficiency Tuning The electromagnetic interference (EMI) shielding market is one of the fast-growing sectors owing to the increasingly complicated electromagnetic environment. Recently, priority has been given to improvise the techniques to fine-tune and predict the shielding properties of structures without exhausting raw materials and reduce the expense as well as the time required for optimization. In this article, we demonstrate an effective and precise method to predict the EMI shielding effectiveness (SE) of materials via simulating the performance of composites having alternate layers of conducting and magnetic materials in a virtual waveguide measurement environment based on the finite element method (FEM). The EMI SE of multilayered heterogeneous arrangements (MHAs) is simulated in the K-band region using ANSYS High Frequency Structure Simulator (HFSS) software, which can be extended to all other bands as well. Various simulations carried out by changing the order of the conducting and magnetic layers and the number of layers revealed that the strategic arrangement of electromagnetic (EM) energy-trapping layers inside the impedance-matching layers in the MHAs significantly contributes toward the enhancement of absorption-dominated EMI shielding. Among the MHAs, the conducting-magnetic-conducting (CMC) systems exhibited the highest shielding effectiveness of above 50 dB. The MHAs are realized for testing using poly(vinylidene fluoride)-based composites of low-cost carbon black and barium hexaferrite, an easily accessible ferrite. Through this study, we propose the idea that materials with high production cost and cumbersome fabrication procedures are not necessary to realize highly efficient shielding materials. Electromagnetic shielding ; EMI ; Materials science ; Electromagnetic interference ; Fabrication ; HFSS ; Optoelectronics ; Electromagnetic compatibility ; Composite material ; Acoustics ; Computer science ; Electrical engineering ; Telecommunications ; Physics Electromagnetic wave absorption materials ; Advanced Antenna and Metasurface Technologies ; Electromagnetic Compatibility and Measurements