Is this you? As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.
Claim your profile
Floqer, a Halifax startup that sells AI software for organizing customer data, reached seven figures in annual recurring revenue in less than two years with a team of nine. Its co-founder and chief executive, Shivam Mahajan, has said he wants to build a billion-dollar company with fewer than 20 employees. Other early-stage founders are working to the same plan.
Sound waves are attenuated as they propagate in amorphous materials. We investigate the mechanism driving sound attenuation in the Rayleigh scattering regime by resolving the dynamics of an excited phonon in time and space via numerical simulations. We find sound attenuation is spatiotemporally heterogeneous. It starts in localized regions, which identify soft regions within the material and correlate with low-frequency vibrational modes.
Abstract The vibrational density of states D(ω) of solids controls their thermal and transport properties. In crystals, the low-frequency modes are extended phonons distributed in frequency according to Debye’s law, D(ω)∝ω2. In amorphous solids, phonons are damped, and at low frequency D(ω) comprises extended modes in excess over Debye’s prediction, leading to the so-called boson peak in D(ω)/ω2 at ωbp, and quasilocalized ones.
As a journalist, you can create a free Muck Rack account to customize your profile, list your contact preferences, and upload a portfolio of your best work.
