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Tip-enhanced vibrational sum frequency generation (VSFG) spectroscopy is proposed and demonstrated. Incorporation with the plasmon cavities leads to significant signal amplification-up to 14 orders of magnitude.
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http://dx.doi.org/10.1038/s41377-025-01946-3 | DOI Listing |
Cureus
August 2025
Obstetrics and Gynecology, Lucina Analytics, Boca Raton, USA.
Objective Severe maternal morbidity (SMM) poses a public health dilemma. To ensure continuity of care for 12 months postpartum, the American Rescue Plan Act of 2021 permitted states to extend Medicaid postpartum coverage to 12 months. This study describes the experiences of a major national insurer in the United States.
View Article and Find Full Text PDFClin Nurs Res
September 2025
Mayo Clinic Arizona, Phoenix, AZ, USA.
The COVID-19 pandemic necessitated a triad of therapies for patients: oxygen, nutrition, and patient positioning. In the progressive care units, patients were placed in a prone position while receiving continuous enteral nutrition (EN) to optimize healing and oxygenation. The study aimed to identify the rate of aspiration pneumonia in non-ventilated COVID-19 patients placed in a prone position while receiving continuous EN.
View Article and Find Full Text PDFMedicine (Baltimore)
September 2025
Department of Gastroenterology, Hui Ya Hospital of The First Affiliated Hospital, Sun Yat-sen University, Huizhou, China.
Prior observational studies suggested an association between chronic rhinosinusitis (CRS) and inflammatory bowel disease (IBD), but causality remains unclear. This study employed a bidirectional 2-sample Mendelian randomization (MR) analysis to investigate potential causal relationships. Genetic variants associated with CRS and IBD (including Crohn's disease and ulcerative colitis) were sourced from the IEU Open genome-wide association study project.
View Article and Find Full Text PDFJAMA Neurol
September 2025
Translational Neuropathology Research Laboratory, Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia.
Importance: Exposure to fine particulate matter air pollution (PM2.5) may increase risk for dementia. It is unknown whether this association is mediated by dementia-related neuropathologic change found at autopsy.
View Article and Find Full Text PDFJ Chem Phys
September 2025
Department of Chemistry, Zhejiang University, Hangzhou, Zhejiang Province 310027, China.
Sum-frequency generation vibrational spectroscopy (SFG-VS) has been well-established as a unique spectroscopic probe to interrogate the structure, interaction, and dynamics of molecular interfaces, with sub-monolayer sensitivity and broad applications. Sub-1 cm-1 High-Resolution Broadband SFG-VS (HR-BB-SFG-VS) has shown advantages with high spectral resolution and accurate spectral line shape. However, due to the lower peak intensity for the long picosecond pulse used in achieving sub-wavenumber resolution in the HR-BB-SFG-VS measurement, only molecular interfaces with relatively strong signal have been studied.
View Article and Find Full Text PDF