98%
921
2 minutes
20
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1021/acs.est.8b06179 | DOI Listing |
ACS Appl Mater Interfaces
September 2025
Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States.
Contact-induced reactions of interfacially confined molecules represent a widespread yet poorly understood class of mechanochemical phenomena, with broad implications for surface chemistry, tribology, and nanotechnology. Tribopolymerization─stress-induced polymerization of organic adsorbates into insulating nanolayers─causes conductance loss and limits the reliability of electrical contacts across length scales, particularly in nanoelectromechanical systems (NEMS). Using atomic force microscopy (AFM), we investigate how stress and voltage drive tribopolymer growth from ambient-adsorbed molecules in Pt/Pt nanocontacts.
View Article and Find Full Text PDFACS Appl Mater Interfaces
September 2025
School of Chemical Engineering and Technology, Xi'an Jiaotong University, Xi'an 710049, P.R. China.
Selective removal of aromatic contaminants from water matrices poses substantial difficulties in environmental remediation processes, necessitating sophisticated materials with discriminatory molecular recognition properties. Herein, we report a framework-elastomer hybrid membrane containing [Co(4-pmntd)(NO)] (4-pmntd represents ,'-bis(4-pyridylmethyl)naphthalene diimide) designed for effective toluene recovery from trace aqueous environments. Systematic structural analysis employing crystallographic diffraction, gas adsorption measurements, surface electron spectroscopy, and proton nuclear magnetic resonance elucidates the material's architectural characteristics and surface phenomena.
View Article and Find Full Text PDFPhys Rev Lett
August 2025
National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Controlling the Stark perturbation from ambient thermal radiation is key to advancing the performance of many atomic frequency standards, including state-of-the-art optical lattice clocks (OLCs). We demonstrate a cryogenic OLC that utilizes a dynamically actuated radiation shield to control the perturbation at 1.7×10^{-20} fractional frequency, a factor of ∼40 beyond the best OLC to date.
View Article and Find Full Text PDFEnviron Sci Atmos
April 2025
Public Health Research Group, Department of Biomedical Sciences, University of Cape Coast, Cape Coast, Ghana.
Ambient air pollution has been linked to several health endpoints. The WHO attributes 7 million deaths annually to air pollution with particulate matter (PM) being the pollutant of critical importance due to its devastating health effects. Air quality monitoring is very limited in sub-Saharan African (SSA) countries and although satellite remote sensing has helped to bridge the huge air quality data gaps, these measurements have not been validated against ground-level measurements in these countries.
View Article and Find Full Text PDFEClinicalMedicine
September 2025
Nanoscope Therapeutics Inc, 2777 N. Stemmons Fwy, Dallas, TX 75207, USA.
Background: Stargardt disease (SD) is an inherited degenerative retinal disease affecting rod and cone photoreceptors and retinal pigment epithelial (RPE) cells, leading to severe and irreversible vision loss. Optogenetics is a promising approach to restoring vision by photosensitizing spared healthy retinal neurons.
Methods: The STARLIGHT phase 2 open-label study (NCT05417126) was conducted over 48-weeks at two US sites to assess the safety and efficacy of MCO-010 administered via a single intravitreal injection in the worse-seeing eye of SD patients.