565 citations · 838 across the 18 of their papers we have counts for
10 papers · 1 filter
Cornerstones are the Key Stones: Using Interpretable Machine Learning to Probe the Clogging Process in 2D Granular Hoppers
Jesse M. Hanlan, Sam Dillavou, Andrea J. Liu +1
The sudden arrest of flow by formation of a stable arch over an outlet is a unique and characteristic feature of granular materials. Previous work suggests that grains near the out…
The Equation of Motion for Taut-Line Buzzers
Alexander J. Gerra, Courtney C. Jones, Sam Dillavou +4
Equations of motion are developed for the oscillatory rotation of a disk suspended between twisted strings kept under tension by a hanging mass, to which additional forces may be a…
Stochastic dynamics of granular hopper flows: a configurational mode controls the stability of clogs
David Hathcock, Sam Dillavou, Jesse M. Hanlan +2
Granular flows in small-outlet hoppers exhibit several characteristic but poorly understood behaviors: temporary clogs (pauses) where flow stops before later spontaneously restarti…
Machine Learning Without a Processor: Emergent Learning in a Nonlinear Electronic Metamaterial
Sam Dillavou, Benjamin D Beyer, Menachem Stern +3
Standard deep learning algorithms require differentiating large nonlinear networks, a process that is slow and power-hungry. Electronic learning metamaterials offer potentially fas…
Aqueous foams in microgravity, measuring bubble sizes
Marina Pasquet, Nicolo Galvani, Olivier Pitois +9
The paper describes a study of wet foams in microgravity whose bubble size distribution evolves due to diffusive gas exchange. We focus on the comparison between the size of bubble…
Desynchronous Learning in a Physics-Driven Learning Network
Jacob F Wycoff, Sam Dillavou, Menachem Stern +2
In a neuron network, synapses update individually using local information, allowing for entirely decentralized learning. In contrast, elements in an artificial neural network (ANN)…
Beyond Quality and Quantity: Contact Distribution Encodes Frictional Strength
Sam Dillavou, Yohai Bar Sinai, Michael P Brenner +1
Classically, the quantity of contact area between two bodies is considered a proxy for the force of friction. However, bond density across the interface - quality of contact…
Influences of microcontact shape on the state of a frictional interface
Tom Pilvelait, Sam Dillavou, Shmuel M. Rubinstein
The real area of contact of a frictional interface changes rapidly when the normal load is altered, and evolves slowly when normal load is held constant, aging over time. Tradition…
Shear Destruction of Frictional Aging and Memory
Sam Dillavou, Shmuel M Rubinstein
We simultaneously measure the static friction and the real area of contact between two solid bodies. Under static conditions both quantities increase logarithmically in time, a phe…
Nonmonotonic Aging and Memory in a Frictional Interface
Sam Dillavou, Shmuel M. Rubinstein
We measure the static frictional resistance and the real area of contact between two solid blocks subjected to a normal load. We show that following a two-step change in the normal…