We propose to realize quantized discrete kinks with cold trapped ions. We show that long-lived solitonlike configurations are manifested as deformations of the zigzag structure in the linear Paul trap, and are topologically protected in a circular trap with an odd number of ions. We study the quantum-mechanical time evolution of a high-frequency, gap separated internal mode of a static kink and find long coherence times when the system is cooled to the Doppler limit. The spectral properties of the internal modes make them ideally suited for manipulation using current technology. This suggests that ion traps can be used to test quantum-mechanical effects with solitons and explore ideas for the utilization of the solitonic internal modes as carriers of quantum information.
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http://dx.doi.org/10.1103/PhysRevLett.104.043004 | DOI Listing |
J Colloid Interface Sci
January 2025
School of Material Science and Engineering, "The Belt and Road Initiative" Advanced Materials International Joint Research Center of Hebei Province, Hebei University of Technology, Tianjin 300130 China. Electronic address:
The development of high-performance sodium-ion batteries (SIBs) is crucial to meeting the growing demand for low-cost, sustainable energy storage alternatives to lithium-ion batteries (LIBs). However, achieving stable cycling performance in SIBs is challenging, particularly with tin (Sn) foil anodes, which suffer from issues like sodium trapping and structural degradation due to significant volume changes during sodiation and desodiation. In this study, we investigate the electrochemo-mechanical behavior of Sn foil anodes, focusing on the mechanisms of sodium trapping and structural evolution that impair battery performance.
View Article and Find Full Text PDFNanomaterials (Basel)
January 2025
Department of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, UK.
We used density functional theory with a hybrid functional to investigate the structure and properties of [4H] (hydrogarnet) defects in -quartz as well as the reactions of these defects with electron holes and extra hydrogen atoms and ions. The results demonstrate the depassivation mechanisms of hydrogen-passivated silicon vacancies in -quartz, providing a detailed understanding of their stability, electronic properties, and behaviour in different charge states. While fully hydrogen passivated silicon vacancies are electrically inert, the partial removal of hydrogen atoms activates these defects as hole traps, altering the defect states and influencing the electronic properties of the material.
View Article and Find Full Text PDFElectromagn Biol Med
January 2025
Department of Mathematics, University of Gour Banga, Malda, India.
Biomagnetic fluid dynamics (BFD) is an emerging and promising field within fluid mechanics, focusing on the dynamics of bio-fluids like blood in the presence of magnetic fields. This research is crucial in the medical arena for applications such as medication delivery, diagnostic and therapeutic procedures, prevention of excessive bleeding, and treatment of malignant tumors using magnetic particles. This study delves into the intricacies of blood flow induced by cilia, carrying trihybrid nanoparticles (gold, copper, and titania), within a catheterized arterial annulus under a robust magnetic field.
View Article and Find Full Text PDFComb Chem High Throughput Screen
January 2025
Jiangsu College of Tourism, Yangzhou 225000, P.R. China.
Aims: Organic thiocyanates are important pharmaceutical intermediates. This study aimed to develop a selective and efficient approach for synthesizing organic thiocyanates.
Methods: Under mild reaction conditions, an array of alkenes, KSCN, and diaryliodonium salts are considered good substrates, providing various aryl-substituted alkylthiocyanates with modest to excellent yield.
J Proteome Res
January 2025
Corelabs, King Abdullah University of Science and Technology, Thuwal 23500-6900, Kingdom of Saudi Arabia.
We introduce here a novel approach, termed time-segmented acquisition (Seg), to enhance the identification of peptides and proteins in trapped ion mobility spectrometry (TIMS)-time-of-flight (TOF) mass spectrometry. Our method exploits the positive correlation between ion mobility values and reversed-phase liquid chromatography (LC) retention time to improve ion separation and resolution. By dividing the LC retention time into multiple segments and applying a segment-specific narrower ion mobility range within the TIMS tunnel, we achieved better separation and higher resolution of ion mobility.
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