Density plot of the power output of an energy-converting network that consists of interacting nano-machines illustrated by the spheres. The power increases from red to blue color, thus in the synchronization phase corresponding to the area enclosed by the white dashed lines, the output of the network is maximized.
A schematic diagram of phase cancellation and microwave attenuation process. The fluffy structure of PANI/Fe ferrite composite can highly increase the transmission path of microwave, and the multiple reflections can enhance the microwave attenuation efficiency of the absorber. Thus, the microwave attenuation capability of PANI/Zn ferrite composites mainly comes from the enhanced effect of fluffy structure, multiple reflections, interfacial polarization, magnetic loss and dielectric loss. Moreover, if the relationship between the coating thickness and the frequency of incident microwaves matched well with the quarter-wave thickness criteria, the incident microwaves would vertically enter the absorber inside, as shown in this figure.
With support from the National Science Foundation's TRIPODS+X program, Lehigh University's Josh Agar is partnering with the University of California at Berkeley to increase the speed of materials discovery and development, with implications in fields including electronics, healthcare and energy systems.
(A) Dropwise condensation on a hydrophobic plain surface. (B) Filmwise condensation on a hydrophilic plain surface. (C) Sucking flow condensation on a hi-mesh surface consisting of the droplet-to-film coalescence and film-to-droplet sucking flow for efficient surface refreshing and droplet growth. (D) Scanning electron microscopy (SEM) image of the hi-mesh surface consisting of woven mesh wires bonded onto a copper substrate. (E) SEM image showing the high-density nanostructures covering the mesh wires and substrate. (F) Time-lapse sucking flow condensation figures on the hi-mesh surface. (G) Sustaining enhanced condensation heat transfer on the hi-mesh surfaces.