Metal-organic frameworks (MOFs) have emerged as excellent platforms possessing tunable and controllable optical behaviors that are essential in high-speed and multichannel data transmission in optical wireless communications (OWCs). Here, we demonstrate a novel approach to achieving a tunable wide modulation bandwidth and high net data rate by engineering a combination of organic linkers and metal clusters in MOFs. More specifically, two organic linkers of different emission colors, but equal molecular length and connectivity, are successfully coordinated by zirconium and hafnium oxy-hydroxy clusters to form the desired MOF structures. The precise change in the interactions between these different organic linkers and metal clusters enables control over fluorescence efficiency and excited state lifetime, leading to a tunable modulation bandwidth from 62.1 to 150.0 MHz and a net data rate from 303 to 363 Mb/s. The fabricated color converter MOFs display outstanding performance that competes, and in some instances surpasses, those of conventional materials commonly used in light converter devices. Moreover, these MOFs show high practicality in color-pure wavelength-division multiplexing (WDM), which significantly improved the data transmission link capacity and security by the contemporary combining of two different data signals in the same path. This work highlights the potential of engineered MOFs as a game-changer in OWCs, with significant implications for future high-speed and secure data transmission.
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http://dx.doi.org/10.1021/jacs.3c03672 | DOI Listing |
PLoS One
January 2025
Department of Microbiology, Immunology and Parasitology, Laboratory of Protozoology, Federal University of Santa Catarina, Florianópolis, SC, Brazil.
In Brazil, Visceral Leishmaniases is caused by Leishmania infantum, and domestic dogs are the main reservoirs in its urban transmission cycle. As an alternative to euthanizing dogs, miltefosine has been used to treat canine visceral leishmaniasis since 2016. In this study, we have assessed the efficacy of miltefosine for treating canine visceral leishmaniasis in a new endemic area through follow-up of naturally infected dogs was evaluated.
View Article and Find Full Text PDFPLoS One
January 2025
COVID-19 Response Team, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America.
Households are a significant source of SARS-CoV-2 transmission, even during periods of low community-level spread. Comparing household transmission rates by SARS-CoV-2 variant may provide relevant information about current risks and prevention strategies. This investigation aimed to estimate differences in household transmission risk comparing the SARS-CoV-2 Delta and Omicron variants using data from contact tracing and interviews conducted from November 2021 through February 2022 in five U.
View Article and Find Full Text PDFPLoS Comput Biol
January 2025
Complex Systems Research Center, Shanxi University, Taiyuan, Shanxi, China.
Human mobility between different regions is a major factor in large-scale outbreaks of infectious diseases. Deep learning models incorporating infectious disease transmission dynamics for predicting the spread of multi-regional outbreaks due to human mobility have become a hot research topic. In this study, we incorporate the Graph Transformer Neural Network and graph learning mechanisms into a metapopulation SIR model to build a hybrid framework, Metapopulation Graph Transformer Neural Network (M-Graphormer), for high-dimensional parameter estimation and multi-regional epidemic prediction.
View Article and Find Full Text PDFSex Health
January 2025
Burnet Institute, Melbourne, Vic, Australia; and Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Vic, Australia; and Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Vic, Australia.
Background Partner notification is an important step in the control of sexually transmissible infections (STIs). STIs remain at high rates among young people and can have serious reproductive consequences if left untreated. This study aimed to determine the preferences and motivations for partner notification among young people in Australia.
View Article and Find Full Text PDFJ Fam Psychol
January 2025
Faculty of Psychology, Institute of Clinical Psychology and Psychotherapy, Technische Universitat Dresden.
Maternal prenatal depressive symptoms (PD symptoms) pose a risk factor for child adjustment difficulties (CAD), defined as internalizing and externalizing symptoms. This study examined the underlying mechanisms of the link between PD symptoms and CAD in a longitudinal study. Longitudinal data from pregnancy to age 3, encompassing four assessment points, were analyzed for = 582 mothers participating in the German family panel .
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