Semantic-Guided Generative Image Augmentation Method with Diffusion Models for Image Classification

Posted by dbos Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Bohan Li, Xiao Xu, Xinghao Wang, Yutai Hou, Yunlong Feng | Summary: Existing image augmentation methods consist of two categories: perturbation-based methods and generative methods. Perturbation-based methods apply pre-defined perturbations to augment an original image, but only locally vary the image, thus lacking image diversity. In contrast, […]


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Smooth, homogeneous, high-purity Nb3Sn superconducting RF resonant cavity by seed-free electrochemical synthesis

Posted by dbos Cornell

Kavli Affiliate: David A. Muller | First 5 Authors: Zeming Sun, Zhaslan Baraissov, Ryan D. Porter, Liana Shpani, Yu-Tsun Shao | Summary: Workbench-size particle accelerators, enabled by Nb3Sn-based superconducting radio-frequency (SRF) cavities, hold the potential of driving scientific discovery by offering a widely accessible and affordable source of high-energy electrons and X-rays. Thin-film Nb3Sn RF […]


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Nanomechanical absorption spectroscopy of 2D materials with femtowatt sensitivity

Posted by dbos Delft

Kavli Affiliate: Herre Van Der Zant | First 5 Authors: Jan N. Kirchhof, Yuefeng Yu, Denis Yagodkin, Nele Stetzuhn, Daniel B. de Araújo | Summary: Nanomechanical spectroscopy (NMS) is a recently developed approach to determine optical absorption spectra of nanoscale materials via mechanical measurements. It is based on measuring changes in the resonance frequency of […]


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Surface acoustic wave resonators on thin film piezoelectric substrates in the quantum regime

Posted by klaurent Delft

Kavli Affiliate: Simon Groblacher | First 5 Authors: Thomas Luschmann, Alexander Jung, Stephan Geprägs, Franz X. Haslbeck, Achim Marx | Summary: Lithium niobate (LNO) is a well established material for surface acoustic wave (SAW) devices including resonators, delay lines and filters. Recently, multi-layer substrates based on LNO thin films have become commercially available. Here, we […]


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Soliton pulse pairs at multiple colors in normal dispersion microresonators

Posted by dbos Caltech

Kavli Affiliate: Kerry Vahala | First 5 Authors: Zhiquan Yuan, Maodong Gao, Yan Yu, Heming Wang, Warren Jin | Summary: Soliton microcombs are helping to advance the miniaturization of a range of comb systems. These combs mode lock through the formation of short temporal pulses in anomalous dispersion resonators. Here, a new microcomb is demonstrated […]


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Engineered zero-dispersion microcombs using CMOS-ready photonics

Posted by klaurent Caltech

Kavli Affiliate: Kerry Vahala | First 5 Authors: Qing-Xin Ji, Warren Jin, Lue Wu, Yan Yu, Zhiquan Yuan | Summary: Normal group velocity dispersion (GVD) microcombs offer high comb line power and high pumping efficiency compared to bright pulse microcombs. The recent demonstration of normal GVD microcombs using CMOS-foundry-produced microresonators is an important step towards […]


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Multi-dimensional wavefront sensing using volumetric meta-optics

Posted by Caltech

Kavli Affiliate: Andrei Faraon | First 5 Authors: Conner Ballew, Gregory Roberts, Andrei Faraon, , | Summary: The ideal imaging system would efficiently capture information about all fundamental properties light: intensity, direction, wavelength, and polarization. Most common imaging systems only map the spatial degrees of freedom of light onto a two dimensional image sensor, with […]


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Multi-dimensional wavefront sensing using volumetric meta-optics

Posted by Caltech

Kavli Affiliate: Andrei Faraon | First 5 Authors: Conner Ballew, Gregory Roberts, Andrei Faraon, , | Summary: The ideal imaging system would efficiently capture information about all fundamental properties light: intensity, direction, wavelength, and polarization. Most common imaging systems only map the spatial degrees of freedom of light onto a two dimensional image sensor, with […]


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Connecting cooperative transport by ants with the physics of active swimmers

Posted by klaurent Harvard

Kavli Affiliate: Ariel Amir | First 5 Authors: Tabea Heckenthaler, Tobias Holder, Ariel Amir, Ofer Feinerman, Ehud Fonio | Summary: Some ant species are known as efficient transporters that can cooperatively carry food items which would be too large for a single ant. Previous studies of cooperative transport focused on the role of individual ants […]


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Connecting cooperative transport by ants with the physics of self-propelled particles

Posted by dbos Harvard

Kavli Affiliate: Ariel Amir | First 5 Authors: Tabea Heckenthaler, Tobias Holder, Ariel Amir, Ofer Feinerman, Ehud Fonio | Summary: Paratrechina longicornis ants are known for their ability to cooperatively transport large food items. Previous studies have focused on the behavioral rules of individual ants and explained the efficient coordination using the coupled-carrier model. In […]


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