Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Charles P. Blakemore"'
Autor:
Nadav Priel, Alexander Fieguth, Charles P. Blakemore, Emmett Hough, Akio Kawasaki, Denzal Martin, Gautam Venugopalan, Giorgio Gratta
Publikováno v:
Science advances. 8(41)
Optically levitated macroscopic objects are a powerful tool in the field of force sensing, owing to high sensitivity, absolute force calibration, environmental isolation, and the advanced degree of control over their dynamics that have been achieved.
Autor:
Charles P. Blakemore, Denzal Martin, Alexander Fieguth, Nadav Priel, Gautam Venugopalan, Akio Kawasaki, Giorgio Gratta
Librational motion, whereby a rigid body undergoes angular oscillation around a preferred direction, can be observed in optically trapped, silica microspheres. We demonstrate the cooling of one librational degree of freedom for $\sim 5~\mu$m diameter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37fffde368131f1a4b7caa59eca34f15
http://arxiv.org/abs/2203.11390
http://arxiv.org/abs/2203.11390
Autor:
Charles P. Blakemore, Denzal Martin, Alexander Fieguth, Nadav Priel, Akio Kawasaki, Giorgio Gratta
Publikováno v:
Optical and Quantum Sensing and Precision Metrology II.
Autor:
Denzal Martin, Giorgio Gratta, Nadav Priel, Akio Kawasaki, Alex Fieguth, Charles P. Blakemore
Publikováno v:
Optical Trapping and Optical Micromanipulation XVII.
The universal law of gravitation has undergone stringent tests for many decades over a significant range of length scales, from atomic to planetary. Of particular interest is the short distance regime, where modifications to Newtonian gravity may ari
Autor:
Charles P. Blakemore, Alexander Fieguth, Akio Kawasaki, Denzal Martin, Nadav Priel, Giorgio Gratta
A high sensitivity force sensor based on dielectric microspheres in vacuum, optically trapped by a single, upward-propagating laser beam, is described. Off-axis parabolic mirrors are used both to focus the 1064~nm trapping beam and to recollimate it
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e30368629e36912684fe77e9e3f6af25
http://arxiv.org/abs/2004.10973
http://arxiv.org/abs/2004.10973
Autor:
Alexander Fieguth, Alexander D. Rider, Nadav Priel, Giorgio Gratta, Akio Kawasaki, Charles P. Blakemore, Sandip Roy
Publikováno v:
Physical Review Applied. 12
We report an $\textit{in situ}$ mass measurement of approximately-$4.7{\text -}\mu$m-diameter, optically levitated microspheres with an electrostatic co-levitation technique. The mass of a trapped, charged microsphere is measured by holding its axial
Publikováno v:
Optical Trapping and Optical Micromanipulation XV.
Autor:
Charles P. Blakemore, Qidong Wang, Alexander D. Rider, Sandip Roy, Giorgio Gratta, Akio Kawasaki
We report on the use of 4.7-$\mu$m-diameter, optically levitated, charged microspheres to image the three-dimensional force field produced by charge distributions on an Au-coated, microfabricated Si beam in vacuum. An upward-propagating, single-beam
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e2acf52b3da59e5dc6a873dfb2215fc
Autor:
Charles P. Blakemore, Sandip Roy, Akio Kawasaki, Giorgio Gratta, Nadav Priel, Alexander D. Rider
We report on the electrically driven rotation of $2.4~\mu$m-radius, optically levitated dielectric microspheres. Electric fields are used to apply torques to a microsphere's permanent electric dipole moment, while angular displacement is measured by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::896ab096810f01e79002a7be06877e63
Autor:
Giorgio Gratta, Alexander D. Rider, Charles P. Blakemore, Liqiang Cao, David Moore, Qidong Wang
Publikováno v:
2017 IEEE 67th Electronic Components and Technology Conference (ECTC).
A density staggered cantilever was developed to measure the micron length gravity between itself and an optically levitated microsphere in high vacuum. The cantilever, has two main density contrasted materials gold(19.3g/cm3) and silicon(2.33g/cm3),