Article
Chemistry, Physical
Mohammed K. Abdel-Rahman, Patrick M. Eckhert, D. Howard Fairbrother
Summary: Ion-beam-induced deposition using Me3PtCpMe was studied through a combination of UHV surface science research and SEM data. The experiments showed that ion-induced deposition reaction cross sections are approximately two orders of magnitude greater, resulting in deposits with PtC5 stoichiometry. Ion-induced deposition also led to bimolecular methyl radical coupling to produce ethane.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Review
Polymer Science
Aarti P. More, Shubham Chapekar
Summary: Hydrogels, crosslinked hydrophilic systems, can be synthesized using various routes, including radiation technology such as gamma, electron beam, and microwave. The optimization of radiation dosage is crucial for achieving desired properties of hydrogels.
Article
Nanoscience & Nanotechnology
Bingdong Chang, Ding Zhao
Summary: A controllable assembly strategy based on 3D aligned silicon nanowires is presented, utilizing a focused electron beam to induce dielectrophoretic forces and achieve elastic deformations and sticking between adjacent nanowires. The process is performed in a vacuum environment to exclude capillary or hydrodynamic forces. Ordered organizations and hierarchical assembly are explored, with the observation of unsynchronized assembly in two layers of nanowires, providing insights into nanoscale sticking phenomena and electrostatic actuations in nanoelectromechanical systems.
Review
Materials Science, Multidisciplinary
Z. J. Ding, Chao Li, Bo Da, Jiangwei Liu
Summary: This paper focuses on the charging effects induced by electron beam irradiation when characterizing nonconductive materials, highlighting the importance of theoretical investigations using the Monte Carlo method. Through Monte Carlo simulations and selected experiments, categories of charging effects, theoretical frameworks, and typical simulation results are introduced, followed by discussions on measures for minimizing charging effects.
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS
(2021)
Article
Multidisciplinary Sciences
Jun Kyu Park, Yue Zhang, Baoxing Xu, Seok Kim
Summary: The direct transfer of pre-patterned materials plays a crucial role in the development of high-performance functional systems. By utilizing a self-delamination-driven pattern transfer method, the authors successfully integrated a single crystalline silicon thin membrane into a multi-functional system.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Anatoly Dvurechenskii, Aleksey Kacyuba, Gennadiy N. Kamaev, Vladimir A. Volodin, Zhanna Smagina
Summary: The radiation-induced phenomena during CaSi2 crystal growth were investigated in the epitaxial CaF2 growth process on Si (111) and after film formation with electron irradiation on Si (111). Both approaches lead to the formation of CaSi2 crystals in the irradiated region of the CaF2 film.
Review
Chemistry, Multidisciplinary
Ziyang Yin, Si Li, Xiang Li, Wuyang Shi, Wei Liu, Zhengxia Gao, Mengya Tao, Chengliang Ma, Yuan Liu
Summary: With the increasing awareness of environmental protection and health, the microwave-induced solution combustion synthesis (MISCS) method for preparing metal oxide nanomaterials is gaining popularity among researchers worldwide. This method offers advantages such as reduced reaction time, energy consumption, and use of toxic chemicals, making it an energy-saving and environmentally friendly approach. This paper provides a brief overview of the mechanism, advantages, related studies, and challenges of MISCS in the synthesis of metal oxide nanomaterials, along with prospects for future development.
Article
Chemistry, Physical
Xinshu Zou, Hao Liu, Hao Xu, Xueyun Wu, Xiaocang Han, Jianli Kang, Kolan Madhav Reddy
Summary: This study proposes a simple strategy for synthesizing ultra-thin Cr2CTx MXenes with superior performance in hydrogen evolution reaction and high stability. The fabricated material exceeds even Pt catalyst in terms of performance, showcasing potential for practical applications.
MATERIALS TODAY ENERGY
(2021)
Article
Nanoscience & Nanotechnology
Yijie Liu, Xuexuan Li, Ben Pei, Lin Ge, Zhuo Xiong, Zhen Zhang
Summary: Scanning probe lithography is a promising technology for nanoscale fabrication. This study proposes a novel framework for optimizing process parameters and segmenting features using machine learning. By extracting reliable information for statistical analysis, the framework enables the optimization of process parameters for smaller critical dimensions and large-scale nano-lithography.
MICROSYSTEMS & NANOENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
B. Abasahl, C. Santschi, T. Raziman, O. J. F. Martin
Summary: The paper provides a detailed overview of nanofabrication techniques for plasmonics, focusing on two different approaches for the fabrication of metallic nanostructures based on e-beam lithography. Ion beam etching produces smaller and more regular features, while the lift-off process can result in slightly fuzzy nanoclusters on the substrate. Both techniques exhibit spectral differences in scattering cross sections for structures supporting complex resonances, guiding researchers to choose the best suited approach for a given application.
Article
Physics, Multidisciplinary
Shiyu Zhou, Jianfei Hua, Weiming An, Warren B. Mori, Chan Joshi, Jie Gao, Wei Lu
Summary: This study presents a novel approach to achieve rapid high-energy acceleration of positrons through symmetric focusing methods in a hollow plasma channel, which can improve the energy extraction efficiency and reduce the energy spread of positrons. Further optimization is feasible for even better results.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Yury G. Yushkov, Efim M. Oks, Andrey V. Tyunkov, Denis B. Zolotukhin
Summary: This article reviews the recent developments in the field of ion-plasma and beam methods for synthesizing protective and functional dielectric coatings. The attractiveness and prospects of creating such coatings through electron-beam heating and subsequent evaporation of dielectric targets are discussed. The use of forevacuum plasma electron sources at elevated pressure allows for direct action of an electron beam on low-conductive materials. Examples of electron-beam evaporation of aluminum oxide, boron, and silicon carbide targets are provided to illustrate the characteristics, parameters, and properties of the synthesized coatings.
Article
Chemistry, Multidisciplinary
Lucie Simonova, Milan Matejka, Alexandr Knapek, Tomas Kralik, Zuzana Pokorna, Filip Mika, Tomas Fort, Ondrej Man, Pavel Skarvada, Alexandr Otahal, Pavel Cudek
Summary: This research focuses on developing a new method for creating nanostructures with high emissivity to match the needs of a selective emitter for the visible and near-infrared region in a thermophotovoltaic system. By using tungsten as the main material and optimizing the process parameters, the study successfully developed nanostructures that can potentially improve the selectivity of the thermophotovoltaic emitter.
Review
Optics
Liu Xiaomeng, Dong Quanlin, Wang Pengfei, Chen He
Summary: Electron beam welding (EBW) is a welding technology suitable for space environments, offering advantages such as high energy efficiency, maximum penetration depth, and quality assurance for aerospace material welding. Despite the effects of space environment factors like microgravity, vacuum conditions, and temperature differences, EBW has been successfully tested and applied in actual space environments. The development and review of space electron beam gun technology in the United States and former USSR provide valuable references for future designs.
Letter
Chemistry, Physical
Xudong Li, Peixian Chen, Yong Xia, Ji Weng, Meijuan Chen, Tingchao He, Yiwen Li, Jiaji Cheng, Lei Zhang
Summary: This article presents a hydrothermal-assisted synthesis method for chiral polyhedral tellurium nanoparticles, which can change the chiral morphology of tellurium nanoparticles by controlling parameters such as hydrothermal reaction time, amount of polyvinylpyrrolidone, and species of chiral molecules.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Review
Materials Science, Multidisciplinary
Yu Liu, Huy Q. Ta, Xiaoqin Yang, Yue Zhang, Junhua Zhou, Qitao Shi, Mengqi Zeng, Thomas Gemming, Barbara Trzebicka, Lei Fu, Mark H. Ruemmeli
Summary: This review focuses on the fabrication and characterization of free-standing nanostructures suspended in graphene using transmission electron microscopy, which enables the observations with atomic resolution and investigations of the dynamic behavior of atoms/structures in such materials. Additionally, the review discusses the influence of novel metal/nonmetal dopants in graphene vacancies with varying bond configurations and the catalytic activities of single atoms/clusters located at the graphene edges. Moreover, the dynamic forming process of freestanding single-atom-thick two-dimensional (2D) clusters/metal/metallenes and 2D clusters/metal/metallenes oxides is discussed.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Panpan Zhao, Markus Gusenbauer, Harald Oezelt, Daniel Wolf, Thomas Gemming, Thomas Schrefl, Kornelius Nielsch, Thomas George Woodcock
Summary: In this study, aberration-corrected scanning transmission electron microscopy coupled with electron energy-loss spectroscopy was used to investigate the atomistic structure and chemical composition of twin boundaries in ferromagnetic r-MnAl-C. The results showed that there was Mn enrichment at both coherent and incoherent twin boundaries, and a transition region with Mn enrichment was found at order twin boundaries. Micromagnetic simulations revealed that increasing structural and chemical disorder at the interface led to an increase in coercivity.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Physical
Jinbo Pang, Songang Peng, Chongyang Hou, Xiao Wang, Ting Wang, Yu Cao, Weijia Zhou, Ding Sun, Kai Wang, Mark H. Ruemmeli, Gianaurelio Cuniberti, Hong Liu
Summary: In this review, the applications of MXene in sensors and actuators are discussed. MXene-based films, membranes, and composites are used to simulate the five primary human senses and stimulate muscles. MXene is utilized in image sensors, gas sensors, chemical biosensors, acoustic devices, and tactile sensors for electronic skin, as well as in MXene-based actuators. The future opportunities for MXene research in artificial intelligence and humanoid robots are also presented.
Article
Nanoscience & Nanotechnology
Anna Kulis-Kapuscinska, Monika Kwoka, Michal Adam Borysiewicz, Tomasz Wojciechowski, Nadia Licciardello, Massimo Sgarzi, Gianaurelio Cuniberti
Summary: The photocatalytic degradation of methylene blue (MB) in wastewater using ZnO nanostructured porous thin films was studied. The SEM analysis revealed the presence of a coral reef structure on the surface of the ZnO thin films, which increased in size after the photocatalytic experiments. The XPS analysis showed slight non-stoichiometry and the presence of carboxyl and carbonyl functional groups after the photodegradation of MB.
Article
Physics, Applied
Shirong Huang, Alexander Croy, Antonie Louise Bierling, Vyacheslav Khavrus, Luis Antonio Panes-Ruiz, Arezoo Dianat, Bergoi Ibarlucea, Gianaurelio Cuniberti
Summary: Olfaction is an ancient sensory system that provides detailed information about the environment. Artificial olfaction aims to mimic the biological sense of smell and digitize it. In this study, machine learning-enabled graphene-based electronic olfaction sensors were developed and their olfactory performance towards VOCs was assessed. The sensors exhibited high performance in odor detection, discrimination, and identification, and showed similar response patterns to individual odors in binary odor mixtures.
APPLIED PHYSICS REVIEWS
(2023)
Article
Materials Science, Multidisciplinary
Marietta Seifert, Barbara Leszczynska, Robert Weser, Siegfried Menzel, Thomas Gemming, Hagen Schmidt
Summary: TiAl-based SAW devices were prepared by depositing Ti/Al multilayers on high-temperature stable CTGS substrates, and characterized for their durability and electrical behavior at intermediate high temperatures. The devices exhibited sufficient stability and a linear dependence of the resonant frequency on temperature, making them suitable for long-term applications.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Mayra Peralta, Steven Feijoo, Solmar Varela, Rafael Gutierrez, Gianaurelio Cuniberti, Vladimiro Mujica, Ernesto Medina
Summary: We investigate the role of electron-spin-phonon coupling in DNA using an effective model Hamiltonian and its connection to the Chiral-Induced Spin Selectivity (CISS) effect. The semiclassical electron transfer in a tight-binding model of DNA with intrinsic spin-orbit coupling is described using the envelope function approach. We find that only acoustic modes exhibit spin-phonon coupling, while optical modes show electron-phonon interaction without spin coupling. An effective Hamiltonian is derived, in which the eigenstates carry spin currents protected by spin-inactive stretching optical modes. The stronger interaction between optical phonons and electrons allows for the decoherence effects and the spin filtering effects observed in CISS.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Mohammad Khazaei, Soungmin Bae, Rasoul Khaledialidusti, Ahmad Ranjbar, Hannu-Pekka Komsa, Somayeh Khazaei, Mohammad Bagheri, Vei Wang, Yasuhide Mochizuki, Mitsuaki Kawamura, Gianaurelio Cuniberti, S. Mehdi Vaez Allaei, Kaoru Ohno, Hideo Hosono, Hannes Raebiger
Summary: MAX phases are layered non-van der Waals materials composed of stacking hexagonal layers of transition metal (M), a group III-VI element(A), and carbon or nitrogen (X). Through high-throughput calculations, 761 dynamically stable MAX phases have been identified, with 466 structures potentially synthesizable. To discover new structural phases, 361 MAX systems with dynamical instabilities were investigated, leading to the discovery of novel superlattices by reconstructing the triangular lattice of A-atoms into 0D-clusters, quasi-1D-chains, or creating 2D Haeckelite or Kagome-like lattices. This work introduces a new approach to discovering novel MAX phases from conventional structures without element alloying.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Alvaro Rodriguez Mendez, Arezoo Dianat, Leonardo Medrano Sandonas, Rafael Gutierrez, Gianaurelio Cuniberti
Summary: In this study, the electronic properties of phosphorene monolayers functionalized with hydroxyl and cysteine molecules were investigated using spin-polarized density-functional theory. It was found that functionalization not only induced electronic states within the semiconducting gap, but also resulted in local magnetism. The ferro- or anti-ferromagnetic ground states could be obtained depending on molecular coverage, lattice direction, and molecular chirality. Functionalized phosphorene monolayers were proposed as bipolar magnetic semiconductors based on the obtained spin-dependent band structures. The electronic parameters used to characterize bipolar magnetic semiconductors became increasingly distinct with increasing surface coverage, suggesting a possible route for designing such materials via targeted molecular functionalization.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Review
Chemistry, Analytical
Alexandra Parichenko, Shirong Huang, Jinbo Pang, Bergoi Ibarlucea, Gianaurelio Cuniberti
Summary: Inspired by biological noses, e-noses imitate them by using gas sensor arrays to detect and identify surrounding gases and volatile compounds. Two-dimensional materials have shown remarkable sensitivity at room temperature, addressing energy efficiency and sensitivity issues. This review highlights advancements in the development of e-noses, including transduction mechanisms and deposition methods for two-dimensional materials. Artificial intelligence tools are discussed for smart data analysis to overcome selectivity limitations.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Florian M. Arnold, Alireza Ghasemifard, Agnieszka Kuc, Jens Kunstmann, Thomas Heine
Summary: Manipulating the twist angle between layers has a significant impact on the properties of layered two-dimensional crystals. In this study, the characteristics of twisted bilayer MoS2 were monitored as a function of the twist angle. Different structural regimes were identified, each with specific structural and electronic properties. The results showed the emergence of extended stacking domains, soliton networks, and superlattices, which contribute to exciting electronic effects.
Article
Multidisciplinary Sciences
Suchetana Sarkar, Kwan Ho Au-Yeung, Tim Kuehne, Albrecht Waentig, Dmitry A. Ryndyk, Thomas Heine, Gianaurelio Cuniberti, Xinliang Feng, Francesca Moresco
Summary: We investigated a prochiral thiophene-based molecule that self-assembles on the Au(111) surface forming islands with different domains using low temperature scanning tunneling microscopy. Two different conformations of the single molecule were observed in the domains, depending on the rotation of bromothiophene groups. By applying voltage pulses from the tip, single molecules could be switched between the two conformations. Scanning tunneling spectroscopy revealed that electronic resonances were mainly localized at the same positions in both conformations. Density-functional theory calculations supported the experimental findings. Moreover, we found that on Ag(111), only one configuration was present and the switching effect was suppressed.
SCIENTIFIC REPORTS
(2023)
Article
Computer Science, Artificial Intelligence
Wenqi Wang, Run Wang, Lina Wang, Zhibo Wang, Aoshuang Ye
Summary: Deep neural networks have achieved remarkable success in various tasks, but they are vulnerable to adversarial examples in both image and text domains. Adversarial examples in the text domain can evade DNN-based text analyzers and pose threats to the spread of disinformation. This paper comprehensively surveys the existing studies on adversarial techniques for generating adversarial texts and the corresponding defense methods, aiming to inspire future research in developing robust DNN-based text analyzers against known and unknown adversarial techniques.
IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Andrei Mitrofanov, Yonder Berencen, Elaheh Sadrollahi, Regine Boldt, David Bodesheim, Hendrik Weiske, Fabian Paulus, Jochen Geck, Gianaurelio Cuniberti, Agnieszka Kuc, Brigitte Voit
Summary: We investigated the structures and properties of a series of low-dimensional hybrid organic-inorganic perovskites based on naphthalene ammonium cations, 2,6-diaminonaphthalene (2,6-DAN), 1-aminonaphthalene (1-AN), and 2-aminonaphthalene (2-AN). These materials exhibit edge- or face-sharing 1D chain structures. Compared to the 2D counterpart containing isomeric 1,5-diaminonaphthalene (1,5-DAN), the 1D hybrid materials exhibit broadband light emission arising from the self-trapped excitons (STEs) owing to their highly distorted structure. This work expands the library of low-dimensional hybrid perovskites and opens new possibilities for obtaining broadband-light-emitting materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Jiao Wang, Nadia Licciardello, Massimo Sgarzi, Gianaurelio Cuniberti
Summary: In this study, multifunctional nanocomposites were used to remove a mixture of pollutants from water. The nanocomposites demonstrated both adsorption capacity and photodegradation activity towards different pollutants, such as dyes and antibiotics. The order of addition did not affect the removal efficiency, indicating the versatility of the nanocomposites.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.