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We report a measurement of the dynamical polarizability of dysprosium atoms in their electronic ground state at the optical wavelength of 1064 nm, which is of particular interest for laser trapping experiments. Our method is based on…

原子物理 · 物理学 2018-06-07 C. Ravensbergen , V. Corre , E. Soave , M. Kreyer , S. Tzanova , E. Kirilov , R. Grimm

Photoemission orbital tomography (POT) from photoelectron momentum maps (PMMs) has enabled detailed analysis of the shape and energy of molecular orbitals in the adsorbed state. This study proposes a new POT method based on the PhaseLift.…

材料科学 · 物理学 2025-06-03 Kaori Niki , Rena Asano , Ryuji Sakanoue , Manabu Hagiwara , Kazushi Mimura

Since Particulate Matters (PMs) are closely related to people's living and health, it has become one of the most important indicator of air quality monitoring around the world. But the existing sensor-based methods for PM monitoring have…

图像与视频处理 · 电气工程与系统科学 2020-04-07 Yonghui Zhang , Ke Gu

Air pollution constitutes the highest environmental risk factor in relation to heath. In order to provide the evidence required for health impact analyses, to inform policy and to develop potential mitigation strategies comprehensive…

应用统计 · 统计学 2021-08-23 Matthew L. Thomas , Gavin Shaddick , Daniel Simpson , Kees de Hoogh , James V. Zidek

This manuscript introduces a novel method to assess tissue oxygen concentration via the quantum entanglement (QE) of photons originating from positronium which is produced within the patient's body during positron emission tomography. We…

医学物理 · 物理学 2026-05-05 Pawel Moskal

High spatial resolution PM2.5 data covering a long time period are urgently needed to support population exposure assessment and refined air quality management. In this study, we provided complete-coverage PM2.5 predictions with a 1-km…

大气与海洋物理 · 物理学 2022-05-09 Qingyang Xiao , Guannan Geng , Shigan Liu , Jiajun Liu , Xia Meng , Qiang Zhang

The number of satellites on low orbit has dramatically increased over the past years, raising concerns among the astronomical community about their impact on observations. Spectroscopic observations represent a large fraction of…

天体物理仪器与方法 · 物理学 2024-01-19 Olivier R. Hainaut Sabine Moehler

Satellite-derived aerosol optical depth (AOD) has been increasingly employed for the estimation of ground-level PM2.5, which is often achieved by modeling the relationship between AOD and PM2.5. To evaluate the accuracy of PM2.5 estimation,…

大气与海洋物理 · 物理学 2018-12-04 Tongwen Li , Huanfeng Shen , Qiangqiang Yuan , Liangpei Zhang

Efficient monitoring of airborne particulate matter (PM), especially particles with aerodynamic diameter less than 2.5 um (PM2.5), is crucial for improving public health. Reliable information on the concentration, size distribution and…

应用物理 · 物理学 2020-01-08 Abhinav Sharma , Shangran Xie , Richard Zeltner , Philip St. J. Russell

Photometric variability in young stellar objects (YSOs) provides critical insight into the mechanisms of mass accretion, disk evolution, and circumstellar extinction in early stellar evolution. We present an analysis of day-timescale…

The Large Synoptic Survey Telescope (LSST) will provide for unbiased sampling of variability properties of objects with $r$ mag $<$ 24. This should allow for those objects whose variations reveal their orbital periods ($P_{orb}$), such as…

Salinity stress poses a significant challenge to global agriculture, necessitating efficient and scalable approaches for early detection and management. This review examines advanced optical spectroscopic imaging techniques, including…

定量方法 · 定量生物学 2025-09-03 Ramji Gupta , Snehprabha Gujrathi , Swati Sharma , Saurav Bharadwaj

The last IPCC assessment states that clouds and aerosols remain a challenge in climate prediction with Global Climate Models. Therefore, NASA's 2017 Decadal Survey has made them, along with convection and precipitation, a priority target…

大气与海洋物理 · 物理学 2021-10-15 Anthony B. Davis , Quentin Libois , Nicolas Ferlay , Alexander Marshak

Atom probe tomography (APT) is routinely used for analyzing property-enhancing particles in the nanometer-size range and below, and plays a prominent role in the analysis of solute clusters. However, the question of how well these small…

材料科学 · 物理学 2020-02-25 Frédéric De Geuser , Baptiste Gault

Mode division multiplexing (MDM) systems leveraging spatial modes carrying orbital angular momentum (OAM) present a promising approach to enhance communication capacity in free-space and fiber-optic networks. Efficient detection of OAM…

光学 · 物理学 2025-02-27 Amin Hakimi , S. Faezeh Mousavi , Amir Nader Askarpour

Organic photodetectors (OPDs) based on trap-assisted photomultiplication (PM) effect with external quantum efficiency (EQE) far exceeding 100% are quite appealing for achieving highly sensitive photodetection. A classic structure of PM-type…

应用物理 · 物理学 2019-02-20 Wenyan Wang , Linlin Shi , Ye Zhang , Yuying Hao , Furong Zhu , Kaiying Wang , Yanxia Cui

Net primary productivity (NPP) forms the basis of biological carbon pump, but its estimates in high-latitude regions remain highly uncertain despite its disproportional importance for the global carbon sink. Optical satellites are limited…

Air pollution poses a serious threat to human health as well as economic development around the world. To meet the increasing demand for accurate predictions for air pollutions, we proposed a Deep Inferential Spatial-Temporal Network to…

机器学习 · 计算机科学 2018-09-12 Hao Wang , Bojin Zhuang , Yang Chen , Ni Li , Dongxia Wei

In the past decade, photoemission orbital tomography (POT) has evolved into a powerful tool to investigate the electronic structure of organic molecules adsorbed on (metallic) surfaces. By measuring the angular distribution of…

A radio frequency um-jet plasma source is studied using He/O2 mixture. This um-jet can be used for different applications as a source of chemical active species e.g. oxygen atoms, molecular metastables and ozone. Using absolutely-calibrated…

等离子体物理 · 物理学 2015-05-27 Nikita Bibinov , Nikolas Knake , Hendrik Bahre , Peter Awakowicz , Volker Schulz-von der Gathen