Results 51 to 60 of about 291,976 (179)

Hard X-ray polarimetry with Caliste, a high performance CdTe based imaging spectrometer [PDF]

, 2015
Since the initial exploration of soft gamma-ray sky in the 60's, high-energy celestial sources have been mainly characterized through imaging, spectroscopy and timing analysis. Despite tremendous progress in the field, the radiation mechanisms at work in
Antier, S., Blondel, C., Caroli, E., Chipaux, R., da Silva, R. M. Curado, Del Sordo, S., Ferrando, P., Honkimaki, V., Horeau, B., Laurent, P., Limousin, O., Maia, J. M., Meuris, A., Stephen, J. B.   +13 more
core   +2 more sources

Probing the Influence of Specular Reflection and Overexposure on Backscattering Mueller Matrix Polarimetry for Tissue Imaging and Sensing

Biosensors
Mueller matrix polarimetry has great potential for tissue detection and clinical diagnosis due to its ability to provide rich microstructural information accurately.
Wei Jiao, Nan Zeng, Rui Hao, Hui Ma, Chao He, Honghui He   +5 more
doaj   +1 more source

The Extreme Polarimeter: Design, Performance, First Results & Upgrades

, 2012
Well over 700 exoplanets have been detected to date. Only a handful of these have been observed directly. Direct observation is extremely challenging due to the small separation and very large contrast involved.
Canovas, H., Homs, L., Jeffers, S. V., Keller, C. U., Min, M., Ovelar, M. de Juan, Rodenhuis, M.   +6 more
core   +1 more source

Enhancement in dynamic range for dual-rotating retarder Mueller matrix polarimetry

Journal of Innovative Optical Health Sciences
Mueller matrix polarimetry (MMP) has been proven to be a powerful tool for characterizing the microstructural features of biological samples in biomedical research and clinical diagnostics.
Jiongying Lv, Shuan Yao, Nan Zeng, Caizhong Guan, Honghui He   +4 more
doaj   +1 more source

170 Nanometer Nuclear Magnetic Resonance Imaging using Magnetic Resonance Force Microscopy [PDF]

, 2002
We demonstrate one-dimensional nuclear magnetic resonance imaging of the semiconductor GaAs with 170 nanometer slice separation and resolve two regions of reduced nuclear spin polarization density separated by only 500 nanometers.
Barrett, Bozorth, Bruland, Bruland, Doran D Smith, Kent R Thurber, Lampel, Lee, Lee E Harrell, Leskowitz, Minard, Paget, Seeber, Sidles, Sidles, Slichter, Smith, Thurber, Thurber, Van Veenendaal, Zwanziger, Züger   +21 more
core   +2 more sources

Improved Models of Imaging of Skylight Polarization Through a Fisheye Lens

Sensors, 2019
Researchers have found that some animals can use the skylight polarization pattern for navigation. It is also expected to use the skylight polarization pattern for human navigating in the near future.
Shaobo Sun, Jun Gao, Daqian Wang, Tian Yang, Xin Wang   +4 more
doaj   +1 more source

Polarization-intensity joint imaging for marine target automatic recognition

Geocarto International, 2023
The performance of sole optical imaging device for marine target recognition is degraded by sea fog, sea-glint, and many other disturbing factors. To enhance the ability of target recognition in marine environment, we propose a polarization-intensity ...
Aiqi Zhong, Qiang Fu, Danfei Huang, Jingping Zhu, Huilin Jiang   +4 more
doaj   +1 more source

Imaging Ferroelectric Domains via Charge Gradient Microscopy Enhanced by Principal Component Analysis

, 2017
Local domain structures of ferroelectrics have been studied extensively using various modes of scanning probes at the nanoscale, including piezoresponse force microscopy (PFM) and Kelvin probe force microscopy (KPFM), though none of these techniques ...
Esfahani, Ehsan Nasr, Li, Jiangyu, Liu, Xiaoyan   +2 more
core   +2 more sources

High Accuracy Near-infrared Imaging Polarimetry with NICMOS

, 2008
The findings of a nine orbit calibration plan carried out during HST Cycle 15, to fully determine the NICMOS camera 2 (2.0 micron) polarization calibration to high accuracy, are reported. Recently Ueta et al. and Batcheldor et al.
Axon, D. J., Batcheldor, D., Hines, D. C., Robinson, A., Schmidt, G. D., Schneider, G., Sparks, W., Tadhunter, C.   +7 more
core   +1 more source

Quantifying Influence of Beam Drift on Linear Retardance Measurement in Dual-Rotating Retarder Mueller Matrix Polarimetry

Photonics
Mueller matrix polarimetry is recently attracting more and more attention for its diagnostic potentials. However, for prevalently used division of time Mueller matrix polarimeter based on dual-rotating retarder scheme, beam drift induced by rotating ...
Kaisha Deng, Nan Zeng, Liangyu Deng, Shaoxiong Liu, Hui Ma, Chao He, Honghui He   +6 more
doaj   +1 more source