Use of endobronchial valve to treat COVID-19 adult respiratory distress syndrome-related alveolopleural fistula.

Coronavirus disease-2019 (COVID-19) pneumonia is one of the severe and most dreaded forms of illness caused by severe acute respiratory syndrome coronavirus 2. It often progresses to respiratory failure and acute respiratory distress syndrome (ARDS) requiring mechanical ventilation. ARDS can lead to multiple complications while on mechanical ventilation due to positive airway pressures in a fibrotic lung, one such complication is the development of alveolopleural fistula.

Non-contact, non-destructive mapping of thermal diffusivity and surface acoustic wave speed using transient grating spectroscopy.

We present new developments of the laser-induced transient grating spectroscopy (TGS) technique that enable the measurement of large area 2D maps of thermal diffusivity and surface acoustic wave speed. Additional capabilities include targeted measurements and the ability to accommodate samples with increased surface roughness. These new capabilities are demonstrated by recording large TGS maps of deuterium implanted tungsten, linear friction welded aerospace alloys, and high entropy alloys with a range of grain sizes.

Mussel-Inspired Anchoring of Polymer Loops That Provide Superior Surface Lubrication and Antifouling Properties.

We describe robustly anchored triblock copolymers that adopt loop conformations on surfaces and endow them with unprecedented lubricating and antifouling properties. The triblocks have two end blocks with catechol-anchoring groups and a looping poly(ethylene oxide) (PEO) midblock. The loops mediate strong steric repulsion between two mica surfaces.