Article
Materials Science, Multidisciplinary
Chen Yang, Zhigang Song, Xiaotian Sun, Jing Lu
Summary: This study predicts that monolayer MoSi2N4 and its derivative MoSi2As4 may exhibit valley-contrasting properties that can be described by a three-band low-power Hamiltonian. These materials have the potential applications in valleytronic devices, especially in multiple information processing, marking a theoretical advance in the field.
Article
Chemistry, Multidisciplinary
Jing Lyu, Zicong Marvin Wong, Haicheng Sun, Shuo-Wang Yang, Guo Qin Xu
Summary: This study demonstrates the self-assembly of organic molecular nanowires (NWs) on atomic NWs on semiconductor surfaces, resulting in altered electron structures and enhanced electron transport.
Article
Chemistry, Physical
Yiqing Chen, Ying Zhao, Pengfei Ou, Jun Song
Summary: This study investigates the stability, electronic, and chemical properties of monolayer Ga(1-x)AlxN alloys using density functional theory (DFT) calculations and the cluster expansion (CE) method. The results show that 2D Ga(1-x)AlxN alloys are thermodynamically stable and exhibit complete miscibility. The band gaps of the alloys can be tuned by varying the chemical composition and modifying the biaxial strain, which also alters the chemical properties of Ga(1-x)AlxN. These findings have important implications for the design and optimization of 2D III-nitrides for next-generation electronics and photocatalysis.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Xin Yu, Xitang Qian, Qinwei Wei, Qing Zhang, Hui-Ming Cheng, Wencai Ren
Summary: A class of robust charge-selective membranes, consisting of monolayer nanosheets with inherent surface charges, have been reported. These membranes exhibit superhigh cation/anion selectivity, outperforming previously reported ion-selective membranes. They maintain excellent ion selectivity even in high-concentration salt solutions, acidic and alkaline conditions, and for a wide range of ions of different sizes and charges. By coupling cation-selective and anion-selective membranes, a reverse electrodialysis device with high energy conversion efficiency has been constructed. This work provides a new strategy for designing high-performance ion-selective membranes using 2D nanosheets.
Article
Chemistry, Multidisciplinary
Kyung Ho Kim, Sung Eun Seo, Jinyeong Kim, Seon Joo Park, Jai Eun An, Chan Jae Shin, Choong-Min Ryu, Sung Woon Lee, Ho Chul Nam, Tae Ho Yoon, Jong Cheol Shin, Yu Kyung Kim, Hanseul Oh, Jung Joo Hong, Brian N. Kim, Kyoung G. Lee, Hyun Seok Song, Sang Hun Lee, Oh Seok Kwon
Summary: An integrated photonic digital PCR technology has been developed for the molecular diagnosis of respiratory syncytial virus, which is fast and accurate. It can complete a full analysis within 15 minutes, making it suitable for early diagnosis and large-scale prevention of infectious diseases.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhenping Wang, Qing Cao, Kai Sotthewes, Yalei Hu, Hyeon S. Shin, Siegfried Eigler
Summary: This research focuses on modulating the optoelectronic properties of monolayer MoS2 on different graphene monolayers, showing that oxygen-functionalized graphene and reduced-oxo graphene can significantly enhance the photoluminescence intensity of MoS2, while pristine graphene leads to photoluminescence quenching. Additionally, the increase in photoluminescence intensity is higher in reduced-oxo graphene/MoS2 compared to oxygen-functionalized graphene/MoS2.
Article
Chemistry, Multidisciplinary
Bin Lu, Karol Vegso, Simon Micky, Christian Ritz, Michal Bodik, Yuriy Myronovych Fedoryshyn, Peter Siffalovic, Andreas Stemmer
Summary: In this work, a method for fabricating large-area gold nanoparticle superlattices with subnanometer interparticle gaps is demonstrated. The electrical transport measurements reveal significant variations in the nanogap conductance, while in situ optical reflectance measurements show enhanced plasmonic capacitive coupling with decreasing interparticle gap distance. The resulting superlattices also exhibit tunable effective refractive index and extreme field confinement in the high-density subnanometer plasmonic gaps.
Article
Chemistry, Physical
Peng Wang, Jian Wang, Yun Zheng, Hongyan Shi, Xiudong Sun, Wenjun Liu, Bo Gao
Summary: Monolayer semiconducting 2D materials, such as MoS2, exhibit sensitive excitonic optical responses to the dielectric environment, allowing for reversible modulation of their optical properties by changing the substrate's dielectric properties. This study demonstrates that the PL intensity of monolayer MoS2 can be controlled on ferroelectric LiNbO3 substrates with different polarities through light irradiation and thermal annealing, providing insights into the manipulation of optical properties in 2D materials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Ayana Mizuno, Atsushi Ono
Summary: Plasmonic color modulation was demonstrated by controlling the interparticle distances in an assembled Ag nanocube monolayer, resulting in a transition from magenta to orange to yellow in transmitted light. This color modulation has the potential for applications in multispectral image sensors.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Environmental
Atika Abid, Parameswaran Rajamanickam, Eric Wei -Guang Diau
Summary: In this study, ITO substrates were functionalized to improve hole extraction ability and retard charge recombination. The AB device showed high efficiency and impressive long-term storage stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Instruments & Instrumentation
Soumya Biswas, Aditya S. Dutt, Nirmal Sebastian, Vinayak B. Kamble
Summary: The study presents a simple design for measuring the Seebeck coefficient of samples in the temperature range of 300-600 K. Unlike typical designs, it does not include a hot walled chamber and instead uses brass block supported heaters for the sample. The system shows minimal thermal and electrical contact resistance and is suitable for use near room temperature.
REVIEW OF SCIENTIFIC INSTRUMENTS
(2021)
Article
Physics, Multidisciplinary
Koki Okajima, Kenji Nagata, Masato Okada
Summary: We propose a Markov chain Monte Carlo-based deconvolution method that efficiently estimates the number of peaks in spectral data by searching over probable candidates. Through simulation using synthetic data and analysis of real data sets, the method demonstrates significant advantages in model selection problems.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2021)
Article
Chemistry, Analytical
Daniele Peterle, Thomas E. Wales, John R. Engen
Summary: During HDX-MS analysis, understanding back-exchange is crucial for correction and calculation purposes. This study presents a fast and effective protocol for preparing maxD control samples, utilizing denaturation and deuteration to achieve optimal levels of deuteration within a short timeframe. The results show that this protocol performs equivalently to previous methods, but with significantly reduced time and effort.
ANALYTICAL CHEMISTRY
(2022)
Article
Polymer Science
Eveline E. L. Maassen, Johan P. A. Heuts, Rint P. Sijbesma
Summary: Dynamically crosslinked polymers combine the robustness of thermosetting materials and the reshaping ability of thermoplastic materials, with a reversible crosslinker based on transalkylation chemistry showing efficient exchange without the need for a catalyst. The resulting network is insoluble in common solvents but easily dissolves in the presence of DABCO, with dynamic crosslinks exhibiting a strong temperature-dependent relaxation behavior.
Article
Chemistry, Physical
Xin Wang, Liwen Yang, Yang Wang, Qian Li, Changtao Chen, Benhe Zhong, Yanxiao Chen, Xiaodong Guo, Zhenguo Wu, Yang Liu, Yuxia Liu, Yan Sun
Summary: Adding metal oxides to modify the separator is an effective strategy to inhibit the shuttling of soluble polysulfide in lithium-sulfur batteries. A simple and fast method to chemically decorate the separator was proposed, where an ultrathin self-assembled MnO2 layer was constructed to effectively inhibit the shuttle effect and improve cycling stability. This novel functional separator has great potential for future large-scale applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Polymer Science
Ana Antunes, Anton Popelka, Adriaan Stephanus Luyt, Abdelrahman Mahmoud, Omar Yosef Aljarod, Mohamed Hassan, Peter Kasak
Summary: This study demonstrated the potential use of corona and RF plasma treatment on improving the degradability of Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) through hydrolytic and UV degradation promotion.
EXPRESS POLYMER LETTERS
(2022)
Article
Chemistry, Physical
Muhammad Imran, Ammar Bin Yousaf, Muhammad Farooq, Peter Kasak
Summary: The combination of BiVO4 nanorods and ZnCdS in a hetero-structure has shown great potential in improving the photocatalytic activity for hydrogen production through water splitting under visible light irradiation. The heterostructure exhibits enhanced visible light harvesting ability, prolongs the lifespan of charge carriers, and improves charge separation efficiency, leading to increased efficiency in water splitting.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Oncology
Michal Hires, Eduard Jane, Katarina Kalavska, Michal Chovanec, Michal Mego, Peter Kasak, Tomas Bertok, Jan Tkac
Summary: This study investigates changes in glycosylation associated with cisplatin resistance in testicular cancer cell lines. The results suggest that a specific lectin called Dolichos biflorus agglutinin (DBA) can selectively discriminate between sensitive and resistant cell lines, and other lectins can provide useful information about the strength of cisplatin resistance.
Article
Chemistry, Analytical
Veronika Vrablova, Anna Blsakova, Lenka Lorencova, Jozef Kollar, Alica Vikartovska, Peter Kasak, Jan Tkac
Summary: An assay for detection of the cancer biomarker Thomsen-nouvelle (Tn) antigen on ELISA plates was developed and optimized in this study. The effect of size and charge density of magnetic beads on the sensitivity of the assay was investigated. The results provided valuable insights into the immobilization process on the nanoscale and achieved highly sensitive and selective detection of the analyte.
ANALYTICA CHIMICA ACTA
(2023)
Article
Materials Science, Paper & Wood
Ivan Simkovic, Filip Gucmann, Michal Hricovini, Raniero Mendichi, Alberto Giacometti Schieroni, Daniele Piovani, Stefania Zappia, Edmund Dobrocka, Jaroslav Filip, Milos Hricovini
Summary: In this study, quaternized and crosslinked carboxymethylcellulose sodium (QCCMC) films, as well as quaternized (QCMC) and crosslinked CMC Na (CCMC) derivatives, were prepared using a one-step synthesis. The derivatives were characterized using high-resolution nuclear magnetic resonance (NMR) spectroscopy. Size-exclusion chromatographic multi-angle laser light scattering (SEC-MALS) was used to determine the solubilities of the derivatives and the gyration radii (Rg) of the polysaccharide coils.
Article
Electrochemistry
Josef Reznicek, Vratislav Bednarik, Jaroslav Filip
Summary: This paper introduces and evaluates the application of electrochemical methods in the detection of perchlorate (ClO4-). It shows that ISE and ISE+voltammetric methods are superior to IC and MS in terms of sensitivity, and impedimetric and capacitance methods can achieve detection limits comparable to IC or MS. The paper also discusses related issues such as biosensing and direct electrochemical reduction of perchlorate, as well as the diversity of materials applicable for perchlorate sensors preparation. Overall, the critical review demonstrates that electrochemical ClO4- sensors can achieve the sensitivity of standard methods while retaining their portability and ease of operation.
ELECTROCHIMICA ACTA
(2023)
Review
Biochemistry & Molecular Biology
Bence Farkas, Hana Vojtkova, Zuzana Farkas, Domenico Pangallo, Peter Kasak, Antonio Lupini, Hyunjung Kim, Martin Urik, Peter Matus
Summary: Manganese oxides are crucial in natural geochemical barriers, as they have reactive properties towards essential and potentially toxic trace elements. Microorganisms can actively alter conditions in their microenvironment and dissolve minerals, as well as precipitate bioavailable manganese ions into biogenic minerals. These microbial transformations significantly impact the geochemistry of manganese and elements associated with its oxides, potentially leading to environmental consequences.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Polymer Science
Marketa Ilcikova, Miroslav Mrlik, Martin Cvek, Dmitrij Bondarev, Zuzana Kronekova, Juraj Kronek, Peter Kasak, Jaroslav Mosnacek
Summary: Atom transfer radical polymerization (ATRP) and surface-initiated ATRP (SI-ATRP) were optimized to synthesize polymers with well-defined molar mass and narrow dispersity. The polymerization procedure was thoroughly investigated and optimized, leading to successful preparation of poly-(2-isopropenyl-2-oxazoline)(PIPOx) with controlled molar masses and dispersity. Additionally, magnetic CI-PIPOx core-shell particles with different grafted PIPOx molar masses were synthesized for potential applications as embolization agents.
Article
Materials Science, Multidisciplinary
Anton Popelka, Anjali Cheeramthodi Padmanabhan, Ahmed Sedeek Elgendy, Patrik Sobolciak, Igor Krupa, Ammar Bin Yousaf, Martin Sebesta, Jan Tkac, Peter Kasak
Summary: In this study, a stable and highly hydrophobic perfluoroctylsilane grafted Ti3C2X (PFMXene) was used to fabricate liquid marble and hydrogel-based liquid marble. The hydrogel-based liquid marbles demonstrated floating ability and self-assembly on the water's surface. Additionally, the controlled non-contact movement of hydrogel marbles in water reached a speed of up to 2 cm/s, and the hydrogel matrix allowed for controlled light-induced disintegration or application as a water evaporation system.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Engineering, Biomedical
Stefania Hroncekova, Lenka Lorencova, Tomas Bertok, Michal Hires, Eduard Jane, Marek Bucko, Peter Kasak, Jan Tkac
Summary: Screen-printing technology is used to immobilize enzyme sarcosine oxidase (SOx) onto screen-printed carbon electrodes, creating a portable nanobiosensor for ultrasensitive detection of prostate cancer biomarker sarcosine. The nanobiosensor shows a high detection sensitivity of 7.0 nM using minimal sample volume and exhibits linear calibration curves in the concentration range of 5 nM to 50 μM. The device has a high recovery index and can be used for detection of sarcosine in urine for at least a period of 5 weeks.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Chemistry, Applied
Katarina Borska, Melania Bednarek, Danila Gorgol, Josef Osicka, Miroslav Mrlik
Summary: This study aims to synthesize sustainable polylactide (PLA) materials with enhanced thermal shape stability and reprocessing capability by introducing a new type of dynamic/reversible covalent bonds in the polymer structure through crosslinking. PLA-based networks with and without reversible bonds were prepared, and it was found that the networks with reversible bonds exhibited better mechanical properties and repairability, making them more suitable for 3D printing.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
