Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Lemma, Linnea"'
Autor:
Tran, Phu N., Ray, Sattvic, Lemma, Linnea, Li, Yunrui, Sweeney, Reef, Baskaran, Aparna, Dogic, Zvonimir, Hong, Pengyu, Hagan, Michael F.
Deep learning-based optical flow (DLOF) extracts features in adjacent video frames with deep convolutional neural networks. It uses those features to estimate the inter-frame motions of objects at the pixel level. In this article, we evaluate the abi
Externí odkaz:
http://arxiv.org/abs/2404.15497
Autor:
Zarei, Zahra, Berezney, John, Hensley, Alexander, Lemma, Linnea, Senbil, Nesrin, Dogic, Zvonimir, Fraden, Seth
We characterize two-dimensional (2D) microtubule-based active nematics driven by light-responsive kinesin motor clusters. We assess two constructs of optogenetic kinesin: opto-K401, a processive motor, and opto-K365, a non-processive motor. Measureme
Externí odkaz:
http://arxiv.org/abs/2303.02945
Autor:
Lemma, Bezia, Lemma, Linnea, Ems-McClung, Stephanie C., Walczak, Claire E., Dogic, Zvonimir, Needleman, Daniel J.
Connecting the large-scale emergent behaviors of active materials to the microscopic properties of their constituents is a challenge due to a lack of data on the multiscale dynamics and structure of such systems. We approach this problem by studying
Externí odkaz:
http://arxiv.org/abs/2209.06637
Autor:
Lemma, Linnea M., Varghese, Minu, Ross, Tyler D., Thomson, Matt, Baskaran, Aparana, Dogic, Zvonimir
Active stresses, which are collectively generated by the motion of energy-consuming rod-like constituents, generate chaotic autonomous flows. Controlling active stresses in space and time is an essential prerequisite for controlling the intrinsically
Externí odkaz:
http://arxiv.org/abs/2209.06277
Autor:
Joshi, Chaitanya, Ray, Sattvic, Lemma, Linnea, Varghese, Minu, Sharp, Graham, Dogic, Zvonimir, Baskaran, Aparna, Hagan, Michael F.
Two-dimensional active nematics are often modeled using phenomenological continuum theories that describe the dynamics of the nematic director and fluid velocity through partial differential equations (PDEs). While these models provide a statisticall
Externí odkaz:
http://arxiv.org/abs/2202.12854
Autor:
Najma, Bibi, Varghese, Minu, Tsidilkovski, Lev, Lemma, Linnea, Baskaran, Aparna, Duclos, Guillaume
Cells accomplish diverse functions using the same molecular building blocks, from setting up cytoplasmic flows to generating mechanical forces. In particular, transitions between these non-equilibrium states are triggered by regulating the expression
Externí odkaz:
http://arxiv.org/abs/2112.11364
Active fluids, such as cytoskeletal filaments, bacterial colonies and epithelial cell layers, exhibit distinctive orientational coherence, often characterized by nematic order and topological defects. By contrast, little is known about positional coh
Externí odkaz:
http://arxiv.org/abs/2104.02196
Autor:
Zhou, Zhengyang, Joshi, Chaitanya, Liu, Ruoshi, Norton, Michael M., Lemma, Linnea, Dogic, Zvonimir, Hagan, Michael F., Fraden, Seth, Hong, Pengyu
Active nematics are a class of far-from-equilibrium materials characterized by local orientational order of force-generating, anisotropic constitutes. Traditional methods for predicting the dynamics of active nematics rely on hydrodynamic models, whi
Externí odkaz:
http://arxiv.org/abs/2011.00383
Autor:
Lemma, Linnea M., Norton, Michael M., Tayar, Alexandra M., DeCamp, Stephen J., Aghvami, S. Ali, Fraden, Seth, Hagan, Michael F., Dogic, Zvonimir
Publikováno v:
Phys. Rev. Lett. 127, 148001 (2021)
In microtubule-based active nematics, motor-driven extensile motion of microtubule bundles powers chaotic large-scale dynamics. We quantify the interfilament sliding motion both in isolated bundles and in a dense active nematic. The extension speed o
Externí odkaz:
http://arxiv.org/abs/2006.15184
Autor:
Colen, Jonathan, Han, Ming, Zhang, Rui, Redford, Steven A., Lemma, Linnea M., Morgan, Link, Ruijgrok, Paul V., Adkins, Raymond, Bryant, Zev, Dogic, Zvonimir, Gardel, Margaret L., De Pablo, Juan J., Vitelli, Vincenzo
Hydrodynamic theories effectively describe many-body systems out of equilibrium in terms of a few macroscopic parameters. However, such hydrodynamic parameters are difficult to derive from microscopics. Seldom is this challenge more apparent than in
Externí odkaz:
http://arxiv.org/abs/2006.13203