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Alexander Gondarenko
Researcher at Columbia University
Publications - 42
Citations - 3511
Alexander Gondarenko is an academic researcher from Columbia University. The author has contributed to research in topics: Resonator & Silicon. The author has an hindex of 18, co-authored 42 publications receiving 2984 citations. Previous affiliations of Alexander Gondarenko include National University of Singapore & Cornell University.
Papers
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Journal ArticleDOI
CMOS-compatible multiple-wavelength oscillator for on-chip optical interconnects
Jacob S. Levy,Alexander Gondarenko,Mark A. Foster,Amy C. Turner-Foster,Alexander L. Gaeta,Michal Lipson +5 more
TL;DR: In this paper, the authors demonstrate the first monolithically integrated CMOS-compatible source by creating an optical parametric oscillator formed by a silicon nitride ring resonator on silicon.
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Controlling photonic structures using optical forces
TL;DR: A resonant structure is implemented whose optical response can be efficiently statically controlled using relatively weak attractive and repulsive optical forces, and a static mechanical deformation of up to 20 nanometres in a silicon nitride structure is demonstrated, using three milliwatts of continuous optical power.
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High confinement micron-scale silicon nitride high Q ring resonator
TL;DR: High confinement, low-loss silicon nitride ring resonators with intrinsic quality factor (Q) of 3*10(6) operating in the telecommunication C-band with low scattering and absorption losses are demonstrated.
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Cells test substrate rigidity by local contractions on submicrometer pillars
Saba Ghassemi,Giovanni Meacci,Shuaimin Liu,Alexander Gondarenko,Anurag Mathur,Pere Roca-Cusachs,Pere Roca-Cusachs,Michael P. Sheetz,Michael P. Sheetz,James Hone +9 more
TL;DR: In this article, a series of elastomeric pillar arrays with dimensions extending to the submicron scale (2, 1, and 0.5 μm in diameter covering a range of stiffnesses) were used to analyze matrix forces after initial cell-matrix contact, when early rigidity-sensing events occurred.
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CD28 and CD3 have complementary roles in T-cell traction forces
Keenan T. Bashour,Alexander Gondarenko,Haoqian Chen,Keyue Shen,Xin Liu,Morgan Huse,James Hone,Lance C. Kam +7 more
TL;DR: It is demonstrated that T cells generate significant forces through the T-cell receptor (TCR) and CD28, and delineates the contributions of each in force generation, suggesting similarities between TCR- and integrin-based connections between the cell and substrate.