Article
Physics, Applied
Lukas Spindlberger, Moonyong Kim, Johannes Aberl, Thomas Fromherz, Friedrich Schaeffler, Frank Fournel, Jean-Michel Hartmann, Brett Hallam, Moritz Brehm
Summary: This study investigates the effect of using hydrogenation process to repair point defects on a silicon-on-insulator platform, resulting in a significant increase in photoluminescence yield and showing the potential of hydrogenation technique in repairing harmful defects. The enhancement of photoluminescence yield for DEQDs grown on SOI substrates is particularly promising, indicating potential significance for future photonic integrated circuits.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Dan Shan, Daoyuan Sun, Mingjun Tang, Ruihong Yang, Guangzhen Kang, Tao Tao, Yunqing Cao
Summary: The transportation properties of Boron-doped Si nanocrystals embedded in amorphous SiC films were investigated by studying the temperature-dependent Hall effect measurements. With increasing Si/C ratio, the Hall mobilities, carrier concentrations, and conductivities in the films all showed an upward trend, reaching maximum values of 7.2 cm²/V, 4.6 x 10¹⁹ cm⁻³, and 87.5 S • cm⁻¹ respectively. Different carrier transport behaviors were identified within different temperature ranges in the films of various Si/C ratios.
Article
Materials Science, Ceramics
Shingo Kanazawa, Naoki Yamazaki, Yuki Asakura, Keiji Kubushiro, Toshio Ogasawara
Summary: The study found that the use of amorphous SiC fibers in SiCf/SiC CMC leads to longer fatigue life compared to using crystalline SiC fibers, with crack propagation occurring predominantly across 0-degree fiber bundles undergoing stress and the decrease in toughness due to oxidation of boron nitride. Oxides formed in the matrix from a low-temperature melt infiltration process may help close cracks and prevent crack propagation, while LMI-CMC exhibits excellent high-temperature fatigue properties exceeding the proportional limit at pressures higher than 150 MPa.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Mihail Elisa, Bogdan Alexandru Sava, Mihai Eftimie, Adrian Ionut Nicoara, Ileana Cristina Vasiliu, Madalin Ion Rusu, Cristina Bartha, Monica Enculescu, Andrei Cristian Kuncser, Mihai Oane, Cesar Elosua Aguado, Diego Lopez-Torres
Summary: A sol-gel film based on lead sulfide (PbS) quantum dots was synthesized and found to be a potential nanostructured composite material for temperature sensor systems. The film, belonging to the Al2O3-SiO2-P2O5 system, exhibited optical, structural, and morphological properties. The film was prepared using the sol-gel method combined with the spin coating technique, and the size of the lead sulfide nanocrystallites was confirmed. The film maintained the optical emission characteristic of the PbS quantum dots.
Article
Physics, Condensed Matter
Arka Bikash Dey, Milan K. Sanyal, Swapnil Patil, Khadiza Ali, Deepnarayan Biswas, Sangeeta Thakur, Kalobaran Maiti
Summary: By studying the properties of excitons in SiGe inverted quantum huts, it was found that excitons exhibit different characteristics at different depths, providing important insights for research on excitons in quantum structures.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
Minxing Yan, Lingfeng Zhou, Hongjun Tian, Guangjie Luo, Li Xu, Deren Yang, Yanjun Fang
Summary: Si-based perovskite light-emitting diodes (PeLEDs) with enhanced light extraction ratio and improved photoluminescence quantum yield (PLQY) were achieved through fine-tuning the thicknesses of the functional layers and regulating the crystallization process with an additive. The optimized devices showed a record EQE over 20% and intense radiant exitance.
ACS MATERIALS LETTERS
(2022)
Article
Optics
Vladimir A. Zinovyev, Zhanna V. Smagina, Aigul F. Zinovieva, Ekaterina E. Rodyakina, Aleksey V. Kacyuba, Ksenya N. Astankova, Vladimir A. Volodin, Kseniia V. Baryshnikova, Mihail I. Petrov, Mikhail S. Mikhailovskii, Valery A. Verbus, Margarita V. Stepikhova, Alexey V. Novikov
Summary: In this paper, the effects of GeSi quantum dot emission coupling with the collective modes in linear chains of Si disk resonators are studied. Experimental and numerical analysis results demonstrate this coupling effect and provide potential applications for Si-based near-infrared light sources.
Article
Chemistry, Physical
Tingting Cai, Qing Chang, Chaorui Xue, Ning Li, Jinlong Yang, Shengliang Hu
Summary: Amorphous materials have potential applications in photocatalysis due to their abundant active sites and tunable electronic configuration. However, intrinsic lattice distortion can cause self-trapping effects and recombination of photogenerated carriers. This study introduces carbon dots as a heterogeneous nucleus to regulate the configuration and composition of amorphous nickel oxides, resulting in nanocomposites with superior photocatalytic activities. The excellent performance is attributed to the efficient separation of charges and cyclic conversion between Ni2+ and Ni3+ in the defects.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Ye Liao, E. Yifeng, Xin Zhou, Gaihua He
Summary: The study presents a porous carbon material embedded with tunable quantum dots for highlighted microwave absorbing material. The material is prepared using DC arc plasma technology and consists of a heterogeneous core-shell composite of transition metal oxide MnO and magnetic Fe embedded in a carbon matrix. The incorporation of magnetic iron improves the magnetic response ability, while nanoscale MnO aids in dipole polarization and relaxation, as well as adjusting the catalytic effect of the magnetic iron. The integration between metal and semiconductor promotes charge-transfer and transportation, leading to enhanced microwave absorption due to the Mott-Schottky effect. The heterostructure formed by MnO, Fe, and carbon results in a large amount of magnetic moments, enhancing the magnetic loss capability. The material exhibits excellent microwave absorption properties and tunable frequency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Chaofan Ma, Yebin Zhou, Wei Yan, Wei He, Qiangqiang Liu, Zhen Li, Hongzheng Wang, Guowei Li, Yuanyuan Yang, Wenfeng Han, Chunshan Lu, Xiaonian Li
Summary: A novel porous carbon-metal composite was fabricated using nitrogen-doped carbon quantum dots and nickel. The resulting carbon nanosheet embedded with metal nanoparticles showed excellent catalytic activity and selectivity, suggesting its potential as a replacement for industrial catalysts.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Yexi Li, Dongniu Fan, Ning Sui, Liang Li, Fangfei Li, Xiaochun Chi, Zhihui Kang, Qiang Zhou, Hanzhuang Zhang, Cuili Cui, Yinghui Wang
Summary: PVDF films embedded with different FAPbBr3 (FA = formamidinium) nanocrystals have been synthesized using a fast and direct method, and photodetectors utilizing these films have been fabricated. The relationship between optoelectronic performance and carrier kinetics in the composite film affected by synthesis temperature has been analyzed using transient absorption and temperature-dependent spectroscopy. A primitive fixable light-sensitive detector has been fabricated to broaden the application of PVDF films embedded with different FAPbBr3 nanocrystals in the optoelectronics field. Our results suggest that PVDF films embedded with perovskite nanocrystals can be applied in various semiconductor devices.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Wenke Li, Xiujian Zhao, Francois-Xavier Coudert, Chao Liu
Summary: In this study, the effects of calcium on the atomic and electronic structures of CdSe quantum dots (QDs) were investigated. It was found that the increase in CaO content in glass breaks the linkage between Na and O atoms, but interactions between Cd atoms and nonbridging oxygen atoms remain intact. CdSe QDs promote the migration of Na atoms to the interface and even the interior of QDs, while Ca atoms are only found at the QD/glass interface and in glass matrices far from the QDs. However, the influence of CdSe QDs on the glass structure is limited to a short range near the interface according to the radial concentration distribution. The increase in CaO content also results in an increase in the highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gap of CdSe QD-embedded glasses. These findings contribute to a better understanding of the effects of calcium on the structural and luminescence properties of CdSe QD-embedded glasses.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Optics
Y. Luo, X. Yang, L. Yue, D. S. Ren, J. R. Chen
Summary: The luminescence intensity of silicon nanocrystals (Si-NC) can be enhanced by phosphorus (P) doping. In-situ P-doped Si-NC exhibited higher luminescence intensity compared to ex-situ P-doped Si-NC, with an order of magnitude increase compared to undoped Si-NC.
Article
Chemistry, Inorganic & Nuclear
Xinyuan Li, Mengyao Su, Yi-Chi Wang, Meng Xu, Minman Tong, Sarah J. Haigh, Jiatao Zhang
Summary: This study developed an efficient strategy to synthesize telluride core-shell colloidal semiconductor nanoparticles (CSNPs) with thin amorphous shells using aqueous cation exchange (ACE). The crystallinity and shell thickness of the CSNPs could be controlled by changing the synthesis temperature. The CSNPs synthesized at 60 degrees C exhibited the highest surface-enhanced Raman scattering activity.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Lu Wang, Jing Yang, Xiafan Zhang, Dianzhong Wen
Summary: By introducing graphene quantum dots and PMMA layer into the memristor, the performance and electrical characteristics of the device can be improved.
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)
Article
Chemistry, Multidisciplinary
Darwin Kurniawan, Jacob Mathew, Michael Ryan Rahardja, Hoang-Phuc Pham, Pei-Chun Wong, Neralla Vijayakameswara Rao, Kostya (Ken) Ostrikov, Wei-Hung Chiang
Summary: This study reports the development of smart anticancer drug nanocarriers through plasma engineering technique. The nanocarriers containing chitosan and nitrogen-doped graphene quantum dots can release drugs in a pH-responsive manner and exhibit enhanced toughness. The loaded nanocarriers demonstrate improved drug loading capability and stable release, showing great potential in cancer treatment.
Article
Chemistry, Multidisciplinary
Xin Zeng, Shuai Zhang, Yadi Liu, Xiucui Hu, Kostya Ken Ostrikov, Tao Shao
Summary: To meet global net-zero emission targets, sustainable and low-carbon alternatives are urgently needed for energy-intensive industrial processes like ammonia synthesis. In this study, plasma catalysis is used to achieve renewable-electricity-driven ammonia synthesis under mild conditions. By identifying energy loss pathways and optimizing process parameters, such as pulse voltage and gap distance, high ammonia yields with high energy efficiency and low emission footprint are obtained.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Rusen Zhou, Dejiang Zhou, Baowang Liu, Lanlan Nie, Yubin Xian, Tianqi Zhang, Renwu Zhou, Xinpei Lu, Kostya Ken Ostrikov, Patrick J. Cullen
Summary: The addition of helium can enhance the synthesis of ammonia by modifying the energy transfer mechanism in the plasma, leading to more efficient activation of N2 and production of NH3.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(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
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)
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.