Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Qingnan Xie"'
Autor:
Qingnan Xie, Sylvain Mezil, Paul H. Otsuka, Motonobu Tomoda, Jérôme Laurent, Osamu Matsuda, Zhonghua Shen, Oliver B. Wright
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Zero-group-velocity Lamb waves, which are surface waves with reduced losses and high Q factor, have many potential applications. The authors image such waves in 2 dimensions, and in the GHz range, with a bilayer using a time-resolved imaging techniqu
Externí odkaz:
https://doaj.org/article/2faff5703a904ef681038d18cf7f8b88
Publikováno v:
Applied Sciences, Vol 9, Iss 3, p 459 (2019)
When working in humid environments, corrosion defects are easily produced in metallic plates. For defect detection in underwater plates, symmetric modes of Lamb waves are widely used because of their characteristics including long propagating distanc
Externí odkaz:
https://doaj.org/article/f41e7a3ed23d40f78560d74914ef31da
Autor:
Qingnan Xie, Freeman, Richard B.
Publikováno v:
NBER Working Papers; Jun2023, Issue 31299-31381, p1-45, 45p
Autor:
Fujian Li, Lailin Ji, Xiaohui Zhao, Lan Xia, Dong Liu, Haitao Shi, Wei Feng, Daxing Rao, Yong Cui, Ruijing He, Qingnan Xie, Xiaoli Li, Weixin Ma, Zhan Sui, Yanqi Gao
Publikováno v:
Optics express. 30(12)
We propose a random polarization smoothing method for low-coherence laser to obtain focal spot with random polarization that evolves rapidly in sub-picosecond timescales. Random polarization smoothing is realized by a half-aperture wave plate with su
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2a043011c5eb5cb6f36dce799ac5a17
https://pubmed.ncbi.nlm.nih.gov/36224901
https://pubmed.ncbi.nlm.nih.gov/36224901
Autor:
Qingnan Xie, Daxing Rao, Guangze Yu, Fujian Li, Xianghe Guan, Wei Feng, Lailin Ji, Yong Cui, Yanqi Gao, Zhan Sui
Publikováno v:
Optics Letters. 48:1148
Anti-Stokes fluorescence (ASF) cooling has been demonstrated to be a viable method for balancing the waste heat produced in gain materials. In addition, radiation-balanced fiber lasers and amplifiers at atmospheric pressure have recently been develop
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dec1bf14356d8989bc12c284d86a7965
https://doi.org/10.1364/ol.478745
https://doi.org/10.1364/ol.478745
Autor:
Fujian Li, Lailin Ji, Lan Xia, Dong Liu, Haitao Shi, Wei Feng, Daxing Rao, Xiaohui Zhao, Yong Cui, Ruijing He, Qingnan Xie, Xiaoli Li, Weixin Ma, Zhan Sui, Yanqi Gao
Publikováno v:
Optics Express. 30:35567
Two new random polarization smoothing methods using full-aperture elements are proposed on low-coherence lasers, one using birefringent wedge and one using flat birefringent plate. By designing the crystal axis direction and wedge angle of the birefr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e99a97d830771a4f07e285287dfb938
https://doi.org/10.1364/oe.471993
https://doi.org/10.1364/oe.471993
Autor:
Qingnan Xie, Richard B. Freeman
Publikováno v:
China & World Economy. 27:1-27
China's advance to the forefront of scientific research is one of the 21st century's most surprising developments, with implications for a world where knowledge is arguably “the one ring that rules them all.” This paper provides new estimates of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd280e9240fce3a6b04805fc3c11b6f6
https://doi.org/10.1111/cwe.12265
https://doi.org/10.1111/cwe.12265
Autor:
Richard B. Freeman, Qingnan Xie
This study examines the contribution of Chinese diaspora researchers – those born in China but working outside the country – to China's catching up in global science to become a world leader in research publications and citations. Using a novel n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a419d0d6d38085f8514c415c83e15534
https://doi.org/10.3386/w27169
https://doi.org/10.3386/w27169
Autor:
Qingnan Xie, Richard B. Freeman
Publikováno v:
SSRN Electronic Journal.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b76776576ba51060e020363082e756b5
https://doi.org/10.2139/ssrn.3603799
https://doi.org/10.2139/ssrn.3603799
Autor:
Zhonghua Shen, Osamu Matsuda, Oliver B. Wright, Qingnan Xie, Jérôme Laurent, Motonobu Tomoda, Paul H. Otsuka, Sylvain Mezil
Publikováno v:
Nature Communications
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Zero-group-velocity (ZGV) waves have the peculiarity of being stationary, and thus locally confining energy. Although they are particularly useful in evaluation applications, they have not yet been tracked in two dimensions. Here we image gigahertz z
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::437631de78f899248b390b4ad8f3a976
http://arxiv.org/abs/1901.01013
http://arxiv.org/abs/1901.01013