Review
Crystallography
Zhina Razaghi, Guo-zhen Zhu
Summary: Changes in growth directions of vertically free-standing nanowires can significantly affect their properties, but accurately predicting these changes remains challenging.
Article
Engineering, Electrical & Electronic
Richard W. Ziolkowski
Summary: There is a demand for highly directive antenna systems for space-limited Internet-of-Things devices and NextG applications. Compact high-frequency high-directivity alternatives to phased arrays are desired. This study presents the simulated performance characteristics of compact unidirectional mixed-multipole antennas (UMMAs) based on dipole and quadrupole mixtures, showing their high directivities and attractive radiation efficiencies.
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
(2023)
Article
Materials Science, Multidisciplinary
Lavinia Gabriela Coman, Maria Marcu, Tomy Acsente, Sorin Vizireanu, Veronica Satulu, Gheorghe Dinescu, Elena Matei, Tanta Spataru, Nicolae Spataru, Loredana Preda
Summary: This study investigates the capacitive properties of hybrid nanometric architectures consisting of tungsten oxide nanoparticles deposited on graphite (WOx/G) and graphite coated with highly-porous carbon nanowall layers (WOx/CNW/G). The deposition of the nanostructured oxide was performed by a plasma-assisted sublimation, vapor transport and condensation technique. The samples containing the CNW interlayer show superior areal capacitances making this architecture and its fabrication route promising approaches for supercapacitor applications, with areal capacitances of 1247.2 mF cm-2 and 527.3 mF cm-2 for WOx/CNW/G and WOx/G, respectively.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Xiangjing Wang, Chunsheng Chen, Li Zhu, Kailu Shi, Baocheng Peng, Yixin Zhu, Huiwu Mao, Haotian Long, Shuo Ke, Chuanyu Fu, Ying Zhu, Changjin Wan, Qing Wan
Summary: The research proposes a metal oxide-based vertically integrated spiking cone photoreceptor array that can directly convert persistent lights into spike trains with a power consumption of less than 400 picowatts. By using lights with three wavelengths as pseudo-three-primary colors, the device shows better accuracy in discriminating mixed colors. The results have the potential to enable hardware spiking neural networks with biologically plausible visual perception and contribute to the development of dynamic vision sensors.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Karlheinz Strobl, Fahd Rajab
Summary: Long-lasting, self-supporting, superhydrophobic carbon nanotube structures have been developed for fluid processing devices requiring gas transfer.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Heyou Zhang, Yawei Liu, Muhammad Faris Shahin Shahidan, Calum Kinnear, Fatemeh Maasoumi, Jasper Cadusch, Eser Metin Akinoglu, Timothy D. James, Asaph Widmer-Cooper, Ann Roberts, Paul Mulvaney
Summary: A new method is reported for precisely assembling vertically oriented, single gold nanorods, controlling their orientation. Through electrophoretic deposition, arrays with over one million visually resolvable vertical nanorods per square millimeter can be assembled.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Zhaojun Zhang, Nils Lamers, Chen Sun, Crispin Hetherington, Ivan G. Scheblykin, Jesper Wallentin
Summary: This study presents a low-temperature solution process to fabricate free-standing vertically aligned metal halide perovskite nanowires with excellent optical and electrical properties. Blue-green heterostructured nanowire arrays were also successfully demonstrated. The scalable and high-quality fabrication method offers new possibilities for optoelectronic applications.
Article
Chemistry, Multidisciplinary
Goekalp Engin Akinoglu, Eser Metin Akinoglu, Krzysztof Kempa, James Andell Hutchison
Summary: The optical properties of quasi-Babinet complementary arrays were studied, which consist of nanopillar support, metal disks, and hole array film. Strong vertical plasmonic coupling occurs for small separation distances of the plasmonic slabs, resulting in tunable extraordinary transmission and large electric near-field enhancements. The study also shows that these templates are suitable for plasmonic heterostructures commonly used in plasmon-enhanced photocatalysis.
NANOSCALE ADVANCES
(2021)
Article
Biochemistry & Molecular Biology
Peng Xia, Zhenwang Zhang, Zhihong Tang, Yuhua Xue, Jing Li, Guangzhi Yang
Summary: Three-dimensional vertically aligned graphene (3DVAG) prepared by a unidirectional freezing method shows a vertically ordered channel structure and exhibits superior electrochemical performances compared to random structure reduced graphene oxide (3DrGO), including higher specific capacitance, faster ion diffusion, and better rate performance. The constructed 3DVAG zinc-ion hybrid supercapacitor also demonstrates excellent electrochemical performance.
Article
Physics, Applied
Findan Block, Finn Klingbeil, Sughosh Deshpande, Umer Sajjad, Dennis Seidler, Christine Arndt, Sandra Sindt, Christine Selhuber-Unkel, Jeffrey McCord
Summary: The study demonstrates precise movement control for the use of superparamagnetic microbeads in medical and biological lab-on-chip applications, showcasing the unidirectional transport of magnetic and biological carriers. The research shows that under in-plane rotating magnetic fields, the carriers can be manipulated along a chain of oval shaped magnetic thin film elements, regardless of the sense of magnetic field rotation and orientation of the magnetic pathway.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Environmental
Seok-Jin Kim, Thien Si Nguyen, Javeed Mahmood, Cafer T. Yavuz
Summary: Catalytic ammonia decomposition allows ammonia to be used as a hydrogen gas carrier for carbon-free fuel economy. Using a vertically standing 2D structure as a catalyst support improves conversion yields and rates at low temperatures for a prolonged time.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Neurosciences
Alma S. Halgren, Zarek Siegel, Ryan Golden, Maxim Bazhenov
Summary: Cortical stimulation is a useful tool for research and treatment of neuro-psychiatric conditions, but the lack of predictive models makes it difficult to control the induced physiological patterns. This study uses a hybrid model to understand how cortical surface stimulation can induce traveling waves through asymmetrical activation of inhibitory interneurons. The results show that asymmetric electrical stimulation can easily facilitate traveling waves by relying on the activation of different types of inhibitory interneurons.
JOURNAL OF NEUROSCIENCE
(2023)
Article
Chemistry, Physical
Cuicui Ling, Min Cao, Xin Xue, Tuo Zhang, Bingxin Feng, Qingzhong Xue, Chuanke Wang, Haipeng Lu, Wenpeng Liu
Summary: This article introduces a method for the large-scale fabrication of vertically standing In2S3 nanosheets, and develops an In2S3/Si heterojunction photodetector by combining it with a pyramidal Si array. The heterojunction photodetector exhibits wide-spectrum response, high sensitivity, and high photoelectric conversion efficiency, with potential applications in energy, material development, and biomedicine.
APPLIED SURFACE SCIENCE
(2023)
Article
Optics
Liang Liu, Wangqi Mao, Xinyu Gao, Chenglin He, Zilan Tang, Hao Chang, Long Zhang, Xiaoxia Wang, Hongxing Dong, Anlian Pan
Summary: This study demonstrates a high-capacity physically unclonable function (PUF) label based on vertically aligned perovskite nanowire arrays. The label is constructed using a low-cost solution process and an anodized aluminum oxide template. It achieves high-resolution mapping, impressive encoding capacity, and high pixel density, making it a promising approach for anti-counterfeiting applications.
LASER & PHOTONICS REVIEWS
(2023)
Article
Engineering, Electrical & Electronic
Jiadong Hu, Yue Li, Zhijun Zhang
Summary: In this letter, a vertically polarized 360 degrees azimuth scanning phased array based on a wide beamwidth element is proposed. The proposed array consists of two back-to-back linear arrays. The combination of broadside and endfire scanning modes enables 360 degrees beam scanning in the azimuth plane. A 2 x 8 array working at 3 GHz has been fabricated and measured, showing high peak gain and low gain fluctuation, making it suitable for aircraft-based applications.
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
(2022)
Review
Materials Science, Multidisciplinary
Chuanlong Ma, Anton Nikiforov, Dirk Hegemann, Nathalie De Geyter, Rino Morent, Kostya (Ken) Ostrikov
Summary: This review presents recent advances in low-temperature plasma processing for controlling surface wettability. The underlying mechanisms, key features of fabrication processes, and water-surface interactions are discussed. It aims to guide further development of advanced functional materials.
INTERNATIONAL MATERIALS REVIEWS
(2023)
Article
Chemistry, Physical
Xin Zeng, Shuai Zhang, Xiucui Hu, Cheng Zhang, Kostya (Ken) Ostrikov, Tao Shao
Summary: With the increase in the greenhouse effect and reduction of fossil fuel resources, finding a feasible solution to directly convert power to chemicals using renewable energy is urgent. The power-to-chemicals approach, such as non-thermal plasma, electro-catalysis, and photo-catalysis, has shown great potential in the past two decades. This paper introduces the application of plasma technology in energy conversion, focusing on plasma-enabled ammonia synthesis and analyzing its state-of-the-art, mechanisms, and techno-economics. It emphasizes the importance of the power-to-chemicals approach in reducing carbon emissions and environmental pollution.
FARADAY DISCUSSIONS
(2023)
Article
Chemistry, Multidisciplinary
Amandeep Singh Pannu, Suvankar Sen, Xiaodong (Tony) Wang, Robert Jones, Kostya (Ken) Ostrikov, Prashant Sonar
Summary: Organic-inorganic hybrid lead trihalide perovskites have shown promise in various optoelectronic devices. Red-emitting perovskite-based LEDs have been less developed compared to green and blue ones. This study utilizes red-emitting 2D perovskites and carbon dots to create a stable composite material for red-emitting LEDs with improved performance.
Article
Nanoscience & Nanotechnology
Negar Zebardastan, Jonathan Bradford, Josh Lipton-Duffin, Jennifer MacLeod, Kostya (Ken) Ostrikov, Massimo Tomellini, Nunzio Motta
Summary: Face-to-face annealing is an effective method for obtaining epitaxial graphene with precise control over size, quality, growth rate and thickness.
Article
Physics, Fluids & Plasmas
Kun Liu, Wenqiang Geng, Xiongfeng Zhou, Qingsong Duan, Zhenfeng Zheng, Kostya (Ken) Ostrikov
Summary: Two modes of the atmospheric-pressure plasma discharge, characterized by the dominant O-3 and NO (x) species, were studied using numerical and experimental methods. A global chemical kinetics model was developed to investigate the mode transition mechanisms, and it accurately described the transition. The individual and synergistic effects of discharge energy and gas temperature on species density and the relative contributions of dominant reactions were quantified under increasing discharge voltage conditions.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Physical
Tianlai Xia, Yu Yang, Qiang Song, Mingchuan Luo, Mianqi Xue, Kostya (Ken) Ostrikov, Yong Zhao, Fengwang Li
Summary: Recently, electrocatalytic reactions involving oxygen, nitrogen, water, and carbon dioxide have been developed to produce clean energy, fuels, and chemicals. Understanding catalyst structures, active sites, and reaction mechanisms is crucial for improving performance. In this review, we summarize state-of-the-art in situ characterisation techniques used in electrocatalysis, categorizing them into microscopy, spectroscopy, and other techniques. We discuss the capacities and limits of these techniques to guide further advances in the field.
NANOSCALE HORIZONS
(2023)
Review
Chemistry, Multidisciplinary
Jae Muk Lim, Young Seok Jang, Hoai Van T. Nguyen, Jun Sub Kim, Yeoheung Yoon, Byung Jun Park, Dong Han Seo, Kyung-Koo Lee, Zhaojun Han, Kostya (Ken) Ostrikov, Seok Gwang Doo
Summary: To achieve a zero-carbon-emission society, increasing the use of clean and renewable energy is crucial. However, renewable energy resources have limitations in terms of geographical locations and limited time intervals for energy generation. Therefore, there is a rising demand for high-performance energy storage systems (ESSs) to effectively store and utilize energy during peak and off-peak periods. Supercapacitors, particularly electrical double layer capacitors (EDLCs), show promise as short-term ESSs due to their long cycle retention, high power densities, fast charge/discharge characteristics, and moderate operating voltage window. However, further research is needed to increase the operating voltage and energy densities of EDLCs while maintaining long-term cycle stability and power densities, which are crucial for ESS operation. This article examines advancements in EDLC research to achieve a high operating voltage window and high energy densities for next-generation supercapacitor-based ESSs.
NANOSCALE ADVANCES
(2023)
Article
Engineering, Chemical
Liangliang Lin, Yunming Tao, Sergey A. Starostin, Chengdong Li, Hongyu Huang, Ailin He, Yingjun Wu, Volker Hessel, Kostya Ken Ostrikov
Summary: A dielectric barrier discharge (DBD) plasma was used to reactivate spent Pd/Al2O3 catalysts, and the gas composition in the plasma process affected the extent of coke elimination and electrochemical performance of the reactivated catalysts. The electrochemical performance was found to improve with the increase of gas flow rate and treatment time for Ar and N2 gases, but decrease for O2 gas. Higher oxidation degrees of Pd reduced the electrochemical performance. This study presents a new strategy for reusing waste catalysts in a simple and environment-friendly manner.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Physics, Multidisciplinary
Sanjib Sarkar, Jyoti K. Atul, Modhuchandra Laishram, Dandan Zou, Kostya (Ken) Ostrikov
Summary: The Farley-Buneman and Gradient Drift instabilities in a partially ionized dusty electrojet region were investigated using a fluid model. The effects of dissociative electron-ion recombination and dust charge fluctuation on the instabilities were considered. The dispersion relation describing the propagation of electrojet instabilities within the dust ion acoustic range in a magnetized partially ionized dusty plasma was solved numerically and analytically. The results showed that the Gradient Drift instability was unstable at a much longer wavelength compared to the Farley-Buneman instability. The threshold electron drift velocity for Farley-Buneman instability was affected by the charge on dust, with a decrease at lower altitudes and an increase at higher altitudes. Furthermore, the dissociative electron-ion recombination had a stronger damping effect than the dust charge fluctuation on both instabilities.
Article
Chemistry, Multidisciplinary
Haotian Gao, Guoli Wang, Zhongzheng Huang, Lanlan Nie, Dawei Liu, Xinpei Lu, Guangyuan He, Kostya Ken Ostrikov
Summary: Nitrogen fixation is a crucial process for various biological and industrial processes, but it is also a major source of carbon emissions globally. In this study, a novel approach using plasma-activated mist (PAM) is proposed for efficient and sustainable nitrogen fixation. The PAM system generates nitrogen-fixation species through the reaction of air plasma and water mist, and the liquid-phase nitrogen fixation product is dominated by NO3-. This system is applied to deliver nitrogen-based nutrients directly to plant roots using an aeroponic system, leading to significant improvements in plant growth.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Pei-Chun Wong, Darwin Kurniawan, Jia-Lin Wu, Wei-Ru Wang, Kuan-Hao Chen, Chieh-Ying Chen, Ying-Chun Chen, Loganathan Veeramuthu, Chi-Ching Kuo, Kostya Ken Ostrikov, Wei-Hung Chiang
Summary: In this study, a multifunctional metal-based scaffold was developed for bone defect repair by combining nitrogen-doped graphene quantum dot hydrogel and magnesium alloy. Through in vivo study, it was found that this hybrid scaffold promoted faster, more uniform, and directional bone growth, showing great potential for application in bone defect repair.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Energy & Fuels
Xu Han, Kostya Ken Ostrikov, Jeff Chen, Yao Zheng, Xiaoyong Xu
Summary: The persistent utilization of fossil fuels has led to an increase in atmospheric carbon dioxide levels. The electrochemical reduction of carbon dioxide to solid carbon is considered a potential solution to environmental concerns due to its simplicity, precise control, and environmental friendliness. However, the strong carbon-oxygen bond and electrode degradation hinder the commercialization of this technology. Different strategies have been reported, including solid oxide electrolysis, molten salt and liquid metal reduction, and hybrid electro-thermochemical looping. This mini-review provides a systematic analysis of experimental conditions, mechanisms, and product morphologies, serving as a reference for future research in this emerging field.
Article
Nanoscience & Nanotechnology
Qilei Xu, Qianqian Wu, Chenglin Wang, Xiumei Zhang, Zhengyang Cai, Liangliang Lin, Xiaofeng Gu, Kostya (Ken) Ostrikov, Haiyan Nan, Shaoqing Xiao
Summary: This study employed a two-step KI-assisted confined-space chemical vapor deposition method to prepare multilayer WSe2/SnS2 p-n heterojunctions. The optical characterization and electrical tests revealed clear interfaces and vertical heterostructures, as well as good rectification characteristics and high photoresponse. These performances are likely attributed to the ultra-low dark current generated in the depletion region and the high direct tunneling current during illumination.
Article
Chemistry, Multidisciplinary
Hsiuan Ling Ho, Jung Yen Yang, Chun Hung Lin, Jiann Shieh, Yu Fang Huang, Yi Hong Ho, Tsung Shine Ko, Chiung Chih Hsu, Kostya (Ken) Ostrikov
Summary: The development of reliable and cost-effective molecular detection at the attomolar level on analyte-immobilizing surfaces without lithographic patterning is a challenge in chemical sensing. This study presents a novel approach using plasma etching to produce custom-designed adhesive superhydrophobic silicon nanograss surfaces. These surfaces enable effective immobilization of Ag nanoparticles and R6G target molecules, providing a reliable Raman scattering platform for detecting trace analytes. The study also introduces a plasma-enabled approach for precise interface nanostructuring, potentially leading to unprecedented capabilities in molecular-level sensing technologies.
ADVANCED MATERIALS INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Jinyong Lin, Dong Li, Changhong Li, Ziqi Zhuang, Chengchao Chu, Kostya (Ken) Ostrikov, Erik W. W. Thompson, Gang Liu, Peiyu Wang
Summary: Cancer cells are more susceptible to oxidative stress and nanomaterials-based therapies that generate reactive oxygen species (ROS) have been effective in eliminating cancer cells. These therapies, including chemodynamic therapy, photodynamic therapy, sonodynamic therapy, as well as multi-modal therapies such as combination therapy, have shown significant inhibition of tumor growth. However, the limitations of multi-modal therapy in material preparation and operation protocols hinder its clinical application. Cold atmospheric plasma (CAP), as a reliable source of ROS, light, and electromagnetic fields, provides a simple alternative for implementing multi-modal treatments. Therefore, the emerging field of tumor precision medicine is expected to benefit from these promising multi-modal therapies based on ROS-generating nanomaterials and reactive media like CAPs.
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.