Article
Chemistry, Multidisciplinary
Roma Wirecka, Krzysztof Mackosz, Antoni Zywczak, Mateusz Marek Marzec, Szczepan Zapotoczny, Andrzej Bernasik
Summary: In this study, six nanocomposites based on different magnetic nanoparticles and a conducting polymer, poly(3-hexylthiophene-2,5-diyl) (P3HT), were synthesized. The nanoparticles were coated with either squalene and dodecanoic acid or P3HT, and the cores of the nanoparticles were made of nickel ferrite, cobalt ferrite, or magnetite. The average diameters of all synthesized nanoparticles were below 10 nm, with varying magnetic saturation at 300 K. The impact of different magnetic fillers on the conducting properties and the influence of the shell on the final electromagnetic properties of the nanocomposite were explored.
Article
Physics, Applied
Suko Bagus Trisnanto, Tamon Kasajima, Taiju Akushichi, Yasushi Takemura
Summary: This study achieved a harmonic-rich signal by utilizing linear magnetization responses of magnetic nanoparticles, providing a new approach for magnetic particle imaging. By using a magnetoresistive sensor, the research team proposed a strategy to exploit the linear responses of tracers, resulting in high-contrast images of a solid ferucarbotran phantom and bringing new expectations for clinical use of MPI.
APPLIED PHYSICS EXPRESS
(2021)
Article
Chemistry, Multidisciplinary
Jing Zhong, Enja Laureen Rosch, Thilo Viereck, Meinhard Schilling, Frank Ludwig
Summary: The outbreak of SARS-CoV-2 poses a threat to global medical systems and economies, highlighting the urgent need for rapid and sensitive diagnostics. Homogeneous biosensing based on magnetic nanoparticles shows promise for detecting biomolecules quickly and with high sensitivity.
Article
Nanoscience & Nanotechnology
Svenja Willing, Kai Schlage, Lars Bocklage, Mohammad Mehdi Ramin Moayed, Tatiana Gurieva, Guido Meier, Ralf Roehlsberger
Summary: This study explores the application of oblique-incidence deposition (OID) technology to introduce anisotropy in the magnetic properties of thin films, aiming to control and optimize the magnetic response of TMR devices. Using OID technology not only eliminates the need for additional magnetic contact materials, but also enables targeted control of shape anisotropy, providing new possibilities for TMR device design.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Jiaming Liu, Mengmeng Guan, Yiwei Xu, Shuang Zhao, Wei Su, Cuiling Zhang, Zhiguang Wang, Xiaohui Zhang, Zhongqiang Hu, Zhuangde Jiang, Ming Liu
Summary: In this work, a new weak-current sensor module based on the tunneling magnetoresistive (TMR) effect was developed, which can accurately measure microamperes-level weak electric currents. The sensor has low noise, high sensitivity, and wide bandwidth, and performs well in both DC and AC current measurements. This sensor has significant potential for applications in industrial fields such as smart grids and green energy.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Physics, Applied
Suko Bagus Trisnanto, Tamon Kasajima, Taiju Akushichi, Yasushi Takemura
Summary: Analyzing the spatial distribution of stray field from magnetic nanoparticles is crucial for designing and optimizing magnetometric systems in clinical magnetic particle imaging scanners. In this study, a magnetoresistive sensor was used to directly measure the stray field from a commercial magnetic nanoparticle suspension under a static field. The results show that the spatial distribution of the stray field is correlated with the geometry of the sample.
JOURNAL OF APPLIED PHYSICS
(2022)
Review
Chemistry, Multidisciplinary
Shuren Wang, Junjie Xu, Wei Li, Shengnan Sun, Song Gao, Yanglong Hou
Summary: The development of magnetic nanostructures (MNSs) has greatly advanced both scientific research and technological applications. The systematic engineering on MNSs has led to breakthroughs in various fields, such as MNS construction, exploration of multidimensional MNS magnetism, and potential translational applications. This review provides a detailed description of MNS synthetic strategies and discusses recent progress in nanomedicine, advanced nanobiotechnology, catalysis, and electromagnetic wave adsorption (EMWA), aiming to guide diverse fabrication strategies for MNSs.
Article
Chemistry, Multidisciplinary
Jun Li, Yongjiao Sun, Zhaomin Tong, Zhenting Zhao, Wendong Zhang, Jie Hu, Lin Chen
Summary: Morphology control and noble-metal modification have been shown to effectively improve the gas sensing performances of mixed-metal-oxide sensors. In this study, ZnSnO3 nanocube structures with different morphologies were synthesized and modified with Au nanoparticles. The Au(2)NPs@ZnSnO3 hollow nanocube sensor exhibited excellent gas sensing performance for toluene detection, including ultra-high response, fast response and recovery times, low limit of detection, repeatability, stability, and anti-humidity properties.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Biotechnology & Applied Microbiology
Alexandra P. Cunha, Raquel Henriques, Susana Cardoso, Paulo P. Freitas, Carla M. Carvalho
Summary: The study combined MR sensors, lab-on-chip platform, and RBPs for rapid and multiplex detection of Enterococcus and Staphylococcus. The results showed specific capture of over 70% of the bacterial cells and high signals from MR sensors for detection at low concentrations in less than 2 hours. This lab-on-chip MR platform holds great potential for point-of-care diagnosis of bacterial infections.
BIOTECHNOLOGY AND BIOENGINEERING
(2021)
Article
Instruments & Instrumentation
Xiaolin Li, Jiangtao Zhang, Luyan Shen, Liming Qin, Qiang Fu, Youyi Sun, Yaqing Liu
Summary: A novel magnetoresistance material based on MRF was developed by dispersing CIP into MIL, showing excellent magnetoresistance characteristics and displacement sensing capabilities.
SMART MATERIALS AND STRUCTURES
(2021)
Review
Biotechnology & Applied Microbiology
Zhongchao Huang, Jing Li, Hongwen Zhong, Bo Tian
Summary: This mini-review summarizes more than 30 publications on volume-amplified magnetic nanoparticle detection assays (VAMNDAs) and classifies their detection models for nucleic acid amplification (NAA)-induced MNP size increases. The performances of different linear, cascade, and exponential NAA strategies are highlighted. For some NAA strategies that have not yet been reported in VAMNDA, their performances are predicted based on reaction kinetics and feasible detection models. Challenges and perspectives are also discussed to inspire and guide future VAMNDA studies.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Suko Bagus Trisnanto, Tamon Kasajima, Taiju Akushichi, Yasushi Takemura
Summary: Implementing low ac excitation fields in clinical magnetic particle imaging (MPI) system is critical to avoid magnetostimulation effects. In this study, an array of ultrasensitive MR sensors was used to detect sub-pT magnetic signal and obtain its spatial distribution. The sensitivity of each sensor was increased to 20 mV pT(-1) at 10 kHz with a 0.25 pT noise level. The MR sensor array demonstrated usability for low-field MPI system in mapping high-contrast field images and detecting stray fields of iron oxide nanoparticles.
Article
Engineering, Electrical & Electronic
Yu Wu, Chao Yang
Summary: The lubrication oil system is crucial for judging the operating conditions of machines, with metal particle detection being a key parameter. Inductance detection is a commonly used method with small relative errors, and the inductance change rate is proportional to the magnetic permeability and cube of particle size.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Xin Zhang, Bo Tang, Yansong Li, Chengbin Liu, Pengfei Jiao, Yuping Wei
Summary: A new strategy for designing molecularly imprinted magnetic fluorescent nanocomposites for selective fluorescence detection of target proteins has been proposed. The multifunctional nanocomposite with optics, magnetism, and biocompatibility has shown promising results in the detection of lysozyme in biological samples.
Article
Chemistry, Multidisciplinary
Tiancong Zhao, Runfeng Lin, Borui Xu, Minchao Liu, Liang Chen, Fan Zhang, Yongfeng Mei, Xiaomin Li, Dongyuan Zhao
Summary: This study investigates the fluid dynamics effects of nanoparticles' interaction with biological barriers. Janus nanoparticles with a badminton-like structure were successfully synthesized, and they showed more stable movement in fluid and reduced organ uptakes compared to conventional spherical nanoparticles.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Nadine Fokin, Timo Grothe, Al Mamun, Marah Trabelsi, Michaela Kloecker, Lilia Sabantina, Christoph Doepke, Tomasz Blachowicz, Andreas Huetten, Andrea Ehrmann
Article
Cell Biology
Thomas Vordemvenne, Dirk Waehnert, Julian Koettnitz, Madlen Merten, Nadine Fokin, Andreas Becker, Bjoern Bueker, Asaria Vogel, Daniel Kronenberg, Richard Stange, Guenther Wittenberg, Johannes F. W. Greiner, Andreas Huetten, Christian Kaltschmidt, Barbara Kaltschmidt
Article
Chemistry, Multidisciplinary
Martin Wortmann, Natalie Frese, Al Mamun, Marah Trabelsi, Waldemar Keil, Bjoern Bueker, Ali Javed, Michael Tiemann, Elmar Moritzer, Andrea Ehrmann, Andreas Huetten, Claudia Schmidt, Armin Goelzhaeuser, Bruno Huesgen, Lilia Sabantina
Article
Physics, Multidisciplinary
Andreas Becker, Daniela Ramermann, Inga Ennen, Bjorn Buker, Tristan Matalla-Wagner, Martin Gottschalk, Andreas Hutten
Summary: The study focused on hysteresis and transformation behavior in epitaxial NiCoMnAl magnetic shape memory alloy thin films with varying number of martensitic intercalations. Changes in composition and thickness can lead to different levels of residual austenite and a shift in hysteresis temperature.
Article
Microbiology
Ehsan Asghari, Annika Kiel, Bernhard Peter Kaltschmidt, Martin Wortmann, Nadine Schmidt, Bruno Huesgen, Andreas Huetten, Cornelius Knabbe, Christian Kaltschmidt, Barbara Kaltschmidt
Summary: New ecological trends and changes in consumer behavior are leading to increased biofilm formation in household appliances, creating a demand for new antimicrobial materials and surfaces. Laboratory-cultivated biofilms identified bacterial strains using MALDI-TOF-MS and analyzed the main genera found in these habitats, such as Staphylococci and pseudomonads, offering better understanding of biofilm formation mechanisms.
Article
Chemistry, Multidisciplinary
Daniela Ramermann, Andreas Becker, Bjoern Buker, Andreas Huetten, Inga Ennen
Summary: The magnetic shape memory Heusler alloy NiCoMnAl exhibits a long-range ordering phenomenon in a 3D checkerboard pattern, with martensite and austenite regions distinguished by their brightness in TEM cross sections. The nucleation process is thought to be triggered by inhomogeneous local elastic stray fields of primary martensitic nuclei in the austenite matrix, limited by the thicknesses of the martensite and austenite thin films.
APPLIED SCIENCES-BASEL
(2022)
Article
Microbiology
Annika Kiel, Bernhard Peter Kaltschmidt, Ehsan Asghari, Andreas Huetten, Barbara Kaltschmidt, Christian Kaltschmidt
Summary: The COVID-19 pandemic has led to an increased demand for personal protection equipment, including face masks, in the medical field. One innovative approach to address this demand is the use of 3D printed masks. However, the potential microbial load on these 3D printed masks has often been overlooked. In this study, the biofilm formation of different bacteria species on antimicrobial and non-antimicrobial 3D printing filaments was analyzed. The results suggest that the antimicrobial PLA used in the 3D printing filaments does not significantly affect Gram-negative bacteria, indicating that reusable masks may pose a health risk.
Article
Materials Science, Multidisciplinary
E. Yuzuak, G. D. Yuzuak, I Ennen, A. Huetten
Summary: This study systematically investigated the properties of Tb(25)Fe(6)1Co(14) thin films and found that increasing the thickness of the Pt underlayer helped enhance the perpendicular magnetic anisotropy. It was also discovered that these films exhibited out-of-plane magnetic anisotropy even without annealing.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Microbiology
Bernhard Peter Kaltschmidt, Ehsan Asghari, Annika Kiel, Julian Cremer, Dario Anselmetti, Christian Kaltschmidt, Barbara Kaltschmidt, Andreas Huetten
Summary: This study investigated the application of magnetron sputtering of various transition metals in antimicrobial coatings, finding that gold had the strongest antibacterial effect. These antimicrobial coatings show great potential for application on household appliances and surgical instruments.
Article
Microbiology
Annika Kiel, Ines Creutz, Christian Rueckert, Bernhard Peter Kaltschmidt, Andreas Huetten, Karsten Niehaus, Tobias Busche, Barbara Kaltschmidt, Christian Kaltschmidt
Summary: Opportunistic pathogens like Pseudomonas aeruginosa exist in household washing machines, and four novel strains of P. aeruginosa isolated from different parts of household appliances showed varying biofilm formation. Whole genome sequencing revealed a correlation between biofilm phenotypes and gene compositions, suggesting the involvement of certain genes and prophages in biofilm formation. These findings enhance our understanding of the adaptability and pathogenicity of clinically relevant pathogens in household appliances.
Article
Microbiology
Ehsan Asghari, Bernhard Peter Kaltschmidt, Luis van Merwyk, Thomas Huser, Christian Kaltschmidt, Andreas Huetten, Barbara Kaltschmidt
Summary: Microorganisms forming a biofilm can develop multidrug resistance through information exchange. These multidrug-resistant, biofilm-producing microorganisms are responsible for many hospital-acquired infections and also cause significant damage in industrial sectors. In this study, nanoparticles of nickel and nickel oxide were found to have the highest antibacterial efficacy against Pseudomonas aeruginosa and Staphylococcus aureus isolated from household appliances. Interestingly, only P. aeruginosa was able to survive at high concentrations due to clustering toxic nanoparticles through biofilm formation.
Article
Polymer Science
Julian Cremer, Bernhard P. Kaltschmidt, Annika Kiel, Jens Eberhard, Stephan Schmidt, Christian Kaltschmidt, Barbara Kaltschmidt, Andreas Huetten, Dario Anselmetti
Summary: The aging-induced surface-covering EBS layers changed the surface morphology, promoting bacterial adhesion and biofilm formation of Pseudomonas aeruginosa. This study provides insight into the time-dependent, polymer-liquid interface aging process of industrial performance polypropylene samples and highlights the detrimental effects of EBS on surface transformation and degradation.
Review
Materials Science, Multidisciplinary
Tomasz Blachowicz, Andreas Huetten, Andrea Ehrmann
Summary: This paper reviews recent advances in nanofiber mats for electromagnetic interference (EMI) shielding, focusing on their production, physical properties, and typical characterization techniques.
Article
Materials Science, Multidisciplinary
Bjoern Bueker, JinWon Jung, Taisuke Sasaki, Yuya Sakuraba, Yoshio Miura, Tomoya Nakatani, Andreas Huetten, Kazuhiro Hono
Summary: The study demonstrates that even a monolayer near the interface critically affects the interfacial band matching and magnetoresistance properties between ferromagnetic and nonmagnetic metals.
Article
Materials Science, Multidisciplinary
Jan Lukas Storck, Bennet Brockhagen, Timo Grothe, Lilia Sabantina, Bernhard Kaltschmidt, Khorolsuren Tuvshinbayar, Laura Braun, Ewin Tanzli, Andreas Huetten, Andrea Ehrmann
Summary: Electrospinning PAN onto aluminum foils and stabilizing them on the substrates is an effective solution for maintaining the desired morphology during stabilization and incipient carbonization. Stabilization on a metal substrate at slightly above 240 degrees C with a heating rate of 0.25 K/min leads to fewer defect fibers in the resulting nanofiber mats. High-temperature carbonization on different substrates enables the production of metal/carbon nano-composites.
C-JOURNAL OF CARBON RESEARCH
(2021)
