We present evidence that, below a certain threshold scale, the horizon of a black hole is strongly wrinkled, with its shape manifesting a self-similar (\fractal") spectrum of uctuations on all scales below the threshold. This threshold scale is small compared to the radius of the black hole, but still much larger than the Planck scale. If present, such uctuations might account for a large part ...

Ultrasound contrast microbubbles have been successfully targeted to a number of intravascular disease markers. We hypothesized that targeted delivery could be improved further, by making the microbubbles deformable, leading to increased microbubble-endothelium adhesion contact area and stabilized adhesion. Activated leukocytes utilize such strategy; they deform after binding to inflamed endothe...

Flexible Tactile Sensors In article number 2105334, Jongbaeg Kim and co-workers present a flexible tactile sensor based on the carbon nanotube-wrinkled structure. The strategies to improve sensing performance are provided. this cover image, components of sensor, which is hierarchical structure with aggregated nanotube bundles, expressed.