Article
Materials Science, Ceramics
Mohammadmoein Afrouzmehr, Navid Yasrebi, Mohammad Hossein Sheikhi
Summary: In this study, indium tin oxide sensors were fabricated using an electrophoretic deposition method, which showed better performance in detecting ethanol vapors compared to conventional methods. These new sensors have lower working temperatures, higher response rates, and better selectivity for ethanol vapor detection.
CERAMICS INTERNATIONAL
(2021)
Article
Polymer Science
Irina Kononova, Vyacheslav Moshnikov, Pavel Kononov
Summary: Porous nanocomposites using two and three-component systems were created for gas sensors with the sol-gel method. The Langmuir model and the Brunauer-Emmett-Teller theory were used for calculations to understand the physical-chemical processes during gas adsorption. X-ray diffraction, thermogravimetric analysis, and other techniques were used to analyze the interaction between components and determine optimal annealing temperature. Introduction of a semiconductor additive increased the sensitivity of the nanostructured layers to reductional reagent gases.
Article
Chemistry, Physical
Aleksei V. V. Almaev, Viktor V. V. Kopyev, Vadim A. A. Novikov, Andrei V. V. Chikiryaka, Nikita N. N. Yakovlev, Abay B. B. Usseinov, Zhakyp T. T. Karipbayev, Abdirash T. T. Akilbekov, Zhanymgul K. K. Koishybayeva, Anatoli I. I. Popov
Summary: Indium tin oxide thin films were deposited on aluminum nitride substrates by magnetron sputtering and annealed at different temperatures. The study investigated the structural, optical, electrical conductivity, and gas sensitivity of these films. The results showed the potential of developing gas sensors with low resistance and high sensitivity. The annealed films at 500 degrees C exhibited high sensitivity to gases, with short response and recovery times. The qualitative model proposed in the study explained the sensory effect of the films.
Article
Polymer Science
Samira Sang Bastian, Felix Rechberger, Sabrina Zellmer, Markus Niederberger, Georg Garnweitner
Summary: In this study, ITO aerogels were synthesized through two different methods and then dried using liquid CO2. The synthesis of ITO aerogels was achieved by a one-pot sol-gel process in benzylamine (BnNH2) or by controlled destabilization of a concentrated dispersion in benzyl alcohol (BnOH). The electrical conductivity of the synthesized ITO aerogels was improved significantly through annealing, and the aerogels showed potential for various applications in energy storage and optoelectronic devices.
Article
Chemistry, Analytical
Minwoo Cho, Tae-yil Eom, Srijita Nundy, Joon-Shik Park, Hoo-Jeong Lee
Summary: Based on hafnium-added indium zinc oxide (Hf-IZO), a nitrogen dioxide (NO2) gas sensor was produced and showed high response and selectivity to NO2 gas, as well as long-term stability. The sensing performance of the 15 at% Hf-IZO sensor is linked to the concentration of oxygen vacancies generated by the hafnium doping.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Sung-Hun Kim, Won-Ju Cho
Summary: The electrical properties of solution-processed indium-tin-oxide (ITO) thin films were enhanced through microwave irradiation (MWI) and argon (Ar) gas plasma treatment. The ion bombardment effect during Ar plasma treatment increased oxygen vacancies, improving the electrical properties of the ITO thin films. The combination of MWI post-deposition annealing and Ar plasma treatment presents new possibilities for improving the high-conductivity sol-gel ITO electrode.
Article
Optics
Guanhao Liu, Zhiyi Li, Xiaoxiao Hu, Yuanyuan Qin, Chun-Sing Lee, Dongqi Chen, Lingxue Wang, Jianjun Liu, Pengfei Wang, Yong-Jin Pu, Ying Wang
Summary: This study demonstrates highly efficient and stable OLEDs with thicknesses of over 1 mu m and low operating voltages. MoO3/SimCP2 is used as a hole-injection layer and a thick layer of TAPC is used as a hole-transporting layer. A thin layer of HAT-CN is incorporated to suppress electron leakage. The research paves the way for large-area OLED-based displays and lighting with high production yields.
Editorial Material
Optics
Nathaniel Kinsey
Summary: The article explores the impact of momentum on linear optical processes in near-zero-index materials.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Chemistry, Analytical
Stefan Dietrich, Mihails Kusnezoff, Uwe Petasch, Alexander Michaelis
Summary: The study found that indium tin oxide surfaces are covered with water-related and carbonaceous adsorbates, with carbon monoxide exacerbating this situation. Therefore, when using indium tin oxide for gas sensing applications, the operating temperature should be carefully selected to ensure sensitivity to target gases.
Article
Engineering, Environmental
Jesse Nii Okai Amu-Darko, Shahid Hussain, Qiang Gong, Xiangzhao Zhang, Ziwei Xu, Mingsong Wang, Guiwu Liu, Guanjun Qiao
Summary: In this study, In2O3/PANI composites were synthesized using the hydrothermal technique to explore their sensing capabilities for NO2 gas. The gas sensing properties, such as response/recovery time, optimal temperature, and recyclability, were investigated by analyzing the morphology, purity, and crystal structures of the samples. The In2O3/PANI-1 sensors exhibited high responses, quick response and recovery times, and a low detection limit to NO2 gas at a working temperature of 250 degrees C. The fundamental detecting mechanism for NO2 gas and the electrical characteristics of the In2O3/PANI composites were also discussed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Physics, Applied
Megan Stokey, Rafal Korlacki, Sean Knight, Alexander Ruder, Matthew Hilfiker, Zbigniew Galazka, Klaus Irmscher, Yuxuan Zhang, Hongping Zhao, Vanya Darakchieva, Mathias Schubert
Summary: This study reports a complete set of all optical phonon modes predicted by symmetry for bixbyite structure indium oxide using a combination of spectroscopic ellipsometry and first principles calculations. Experimental results are in excellent agreement with density functional theory calculations and previously reported values. Various physical parameters of indium oxide are determined through multiple methods.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Optics
Hou Shaodong, Ma Zhijian, Yang Junbo, Zhang Min, Yan Peiguang, Ruan Shuangchen
Summary: A fiber component serving as a WDM, OC, and mode-locker was proposed and demonstrated in a laboratory setting, achieving specific parameters for an Er-doped mode-locked fiber laser. This is the first demonstration of a mode-locked fiber laser based on a WDM/OC/SA integrated device.
Article
Materials Science, Ceramics
Takahiro Gunji, Kotoe Nakamura, Ryohei Hayami, Akihisa Aimi, Kenjiro Fujimoto, Kazuki Yamamoto
Summary: A novel recycling system for indium in indium tin oxide (ITO) was established, which successfully synthesized ITO films containing 10 wt% tin oxide with high transparency and resistivity. The system involved the dissolution of indium oxide, chlorination, chelation, and steaming treatment, leading to the synthesis of In(etac)(3) and subsequent film formation.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Environmental Sciences
Naveen Kumar Panneer, Chandrakala Venkatraman, Neena Bachan, Jothi Jeyarani Wilson, Merlin Arnold Edwin, Antony Robinson Jesudasan, Merline Shyla Joseph
Summary: The manuscript describes the fabrication and characterization of an eco-friendly dye-sensitized solar cell (DSSC) using aluminium-doped tin oxide nanoparticles. The doped nanoparticles showed improved optical and electrical properties compared to the undoped ones. The study also investigated the crystal structure, particle size, and photoconductivity of the nanoparticles using analytical tools such as X-ray diffraction and field emission scanning electron microscope. The results demonstrate the potential of Al-doped SnO2 nanoparticles for efficient and environmentally safe photovoltaic applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Gilhwan Lee, Eunhee Park, Van-Toan Nguyen, Soojin Heo, Ngoc-Anh Nguyen, Liudmula L. Larina, Ilsun Yoon, Ho-Suk Choi
Summary: The argon atmospheric pressure plasma treatment is used in combination with the conventional sol-gel dip-coating process to improve the electrical properties of ITO glass by increasing the thickness and reducing the sheet resistance of the ITO thin films. However, prolonging the plasma treatment time beyond 240 seconds can lead to an increase in sheet resistance due to the diffusion of oxygen into the bulk, reducing the level of oxygen vacancies.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Tae-Yeol Jeon, Han-Koo Lee, Geon-Hee Yoon, Si-Hwan Lee, Hyung Joong Yun, Ki-Jeong Kim, Kug-Seung Lee, Nicola Pinna, Seung-Ho Yu
Summary: Changes in electronic and compositional structures of Pt-Ni electrocatalysts with 44% of Ni fraction have been studied using repeated chemical dealloying. Comparisons of different leaching agents showed that hydroquinone generated Pt-enriched surfaces with the highest oxygen reduction reaction activity. Traditional acid leaching is unsuitable for Pt-Ni alloys with high Ni content and incomplete alloying level.
Article
Chemistry, Physical
Alessandro Ponti, Claudia Triolo, Beatrix Petrovicova, Anna M. Ferretti, Gioele Pagot, Wenlei Xu, Vito Di Noto, Nicola Pinna, Saveria Santangelo
Summary: High-entropy oxide nanofibers with interconnected strain-free single crystals and a porous structure were prepared through electrospinning and calcination. The cation distributions and oxidation states were analyzed, and it was found that replacing magnetic cations with non-magnetic ones resulted in a lower critical temperature and the appearance of a reentrant spin-glass-like state.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Neeru Mittal, Alazne Ojanguren, Dipan Kundu, Erlantz Lizundia, Markus Niederberger
Summary: This study presents the design of a fully transient zinc-ion battery made of nontoxic and abundant materials, which can lessen the environmental impact of traditional batteries. The battery exhibits stable cycling performance, high capacity, and biodegradable characteristics.
Article
Energy & Fuels
Ye Liu, Deng Long, Andreas Springer, Rongbin Wang, Norbert Koch, Matthias Schwalbe, Nicola Pinna, Yu Wang
Summary: Atomic-level manipulation of catalysts is essential for understanding their properties and enhancing their performance. In this study, the replacement of the central metal atom in an atomic-scale silver nanocluster with palladium, platinum, and gold atoms allowed for the investigation of the structure-property-activity relationship. Doping of the nanoclusters resulted in significant changes in electronic structure and improved photocatalytic activity, except for palladium and gold doping which showed reduced performance due to energy mismatch.
Article
Chemistry, Multidisciplinary
Jun Zhang, Renaud A. L. Vallee, Zdravko Kochovski, Wei Zhang, Chen Shen, Florian Bertram, Nicola Pinna
Summary: In this study, chiral CuO superstructures are used as a model system to investigate the formation process of hierarchical chiral structures. The research reveals the chiral transfer mechanism between inorganic compounds and chiral organic additives. The morphology evolution of the chiral superstructure involves hierarchical assembly at different growth stages. Moreover, the study successfully reproduced the structural chirality through electro-dynamical simulations and predicted its modulation.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Wei Zhang, Michael. J. J. Bojdys, Nicola Pinna
Summary: We demonstrate a versatile synthesis strategy to combine metal-organic frameworks with nanoparticles, allowing for the formation of mono-, bi-, tri-, and quaternary composites. This method does not require specific surface structures or functionalities on the pre-formed cores. The controlled diffusion rate of alkaline vapors regulates the growth of MOFs and encapsulation of NPs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Samira Sang Bastian, Felix Rechberger, Sabrina Zellmer, Markus Niederberger, Georg Garnweitner
Summary: In this study, ITO aerogels were synthesized through two different methods and then dried using liquid CO2. The synthesis of ITO aerogels was achieved by a one-pot sol-gel process in benzylamine (BnNH2) or by controlled destabilization of a concentrated dispersion in benzyl alcohol (BnOH). The electrical conductivity of the synthesized ITO aerogels was improved significantly through annealing, and the aerogels showed potential for various applications in energy storage and optoelectronic devices.
Article
Chemistry, Physical
Wei Zhang, Nicola Pinna
Summary: Metal-organic frameworks (MOFs) containing noble metal nanocrystals (NCs) show great potential in catalysis, especially for selective catalysis. However, the crystalline framework shell of MOFs can hinder the mass transfer and diffusion of precursors, leading to suboptimal catalytic performance. The integration of noble metal NCs in a hollow MOF shell can address this issue.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jiao Wang, Patriicia A. Russo, Nicola Pinna
Summary: CuO-based nanostructures have been extensively studied in recent years in the fields of catalysis, sensing, and energy conversion and storage. The properties of these nanostructures are closely related to the morphology and crystallinity of CuO. However, the controlled deposition of CuO thin films by atomic layer deposition (ALD) has been challenging due to limited understanding of nucleation behavior and growth process. In this study, a novel ALD process using copper(II) trifluoroacetylacetonate [Cu(tfacac)(2)] as the metal precursor was developed. The nucleation and initial growth of CuO film were found to be dependent on the surface OH concentration. The research provides a strategy for tailoring the structure and properties of thin films via ALD, which has promising applications in designing well-tailored nanostructures.
Article
Chemistry, Multidisciplinary
Fuzhong Li, Jiabei Song, Yutong Niu, Hewei Zhang, Markus Niederberger, Wei Cheng
Summary: This study reports the successful fabrication of macroscopic free-standing nanobelt aerogels with superelastic behavior, thermal insulation, and fire resistance. The composite aerogels show promising applications in fields such as thermal insulation, energy storage, and catalyst support.
Article
Chemistry, Multidisciplinary
Claudia Triolo, Mariam Maisuradze, Min Li, Yanchen Liu, Alessandro Ponti, Gioele Pagot, Vito Di Noto, Giuliana Aquilanti, Nicola Pinna, Marco Giorgetti, Saveria Santangelo
Summary: High-entropy oxides with vacant lattice sites have great potential as anode materials for lithium-ion batteries. In this study, electrospun oxygen-deficient (Mn,Fe,Co,Ni,Zn) HEO nanofibers were produced and evaluated as anode active material. The lithium insertion, cation migration, and metal-forming conversion process were investigated, revealing that the reduction of cations to the metallic form is not complete. Partially reversible crystal phase transitions were also observed.
Article
Chemistry, Multidisciplinary
Diego Ruiz, Veronica F. Michel, Markus Niederberger, Erlantz Lizundia
Summary: Rechargeable batteries that consider the trade-offs between material renewability, processability, thermo-mechanical and electrochemical performance, as well as transiency, can help achieve carbon neutrality. This study demonstrates the fabrication of environmentally sustainable zinc-ion batteries using fungal chitin nanofibril gel polymer electrolytes (GPEs). These GPEs outperform conventional non-renewable/non-biodegradable glass microfibre separator-liquid electrolyte pairs with high ionic conductivities and a stable Zn electrodeposition. By replacing metallic current collectors with biodegradable materials, the batteries can become completely transient. This work showcases the potential applications of bio-based materials in the development of green and electrochemically competitive batteries for sustainable portable electronics or biomedicine.
Article
Materials Science, Multidisciplinary
Huu-Quang Nguyen, My-Chi Thi Nguyen, Hyojin Kang, Hongxia Chen, David Kiwic, Fabian Matter, Elena Tervoort, Markus Niederberger, Jaebeom Lee
Summary: This study demonstrates the fabrication of chiral active structures from achiral nanoscale components by controlling the handedness and absorptive characteristics of chiral materials. The self-assembly of magnetoplasmonic nanowires into chiral active superstructures is achieved through the effect of an externally applied magnetic field. This concept can be applied to the design of optically active chiral 3D superstructures for optical filters, sensing devices, and chiral photocatalysts.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Ye Liu, Zhi Li, Xiao-He Liu, Nicola Pinna, Yu Wang
Summary: In this study, atomically precise AuxAg25-x nanoclusters (NCs) were used for photocatalytic hydrogen evolution. The incorporation of Au atoms into Ag25 NCs narrowed the HOMO-LUMO gaps and created an interstitial Au-Ag microenvironment, promoting photogenerated charge carrier utilization and optimizing reaction dynamics.
NANOSCALE HORIZONS
(2023)
Article
Chemistry, Physical
Neeru Mittal, Tae-Min Jang, Suk-Won Hwang, Markus Niederberger
Summary: Progress in transient electronics relies on the availability of components and materials that can decompose in water. A new water-soluble polymer composite has been developed as a packaging material that releases a chemical etchant to decompose copper and aluminum. The dissolution behavior of copper and aluminum films can be adjusted by varying the composition of the composite, making it a promising approach for transient electronic devices.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
