Results 61 to 70 of about 18,812 (207)
Small, EarlyView.We developed hierarchical chiral Au nanostructures on Au coral structures on transparent conductive oxide substrates using only electrochemical methods. By controlling the interaction between [AuCl4]– and cysteine, we successfully tuned the morphology and circular dichroism of the resulting Au nanostructures.
Kenta Nakagawa +7 more
wiley +1 more source
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020 New quantitative and semiautomated methods for analyzing oil slick evolution using a time series of L-band synthetic aperture radar (SAR) images with short repeat time are developed and explored. In this study, two methods that are complementary in terms
Martine M. Espeseth +4 more
doaj +1 more source
Small Methods, EarlyView.Microspectroscopy combines a standard optical microscope with a spectrometer to measure reflectance and transmittance of samples down to the microscale. A numerical formalism that explicitly accounts for the high numerical aperture of magnifying optics retrieves complex refractive indices.
Julian Schwarz +3 more
wiley +1 more source
Form and structure factors with complex scattering vector
Journal of Applied Crystallography, EarlyView.Under grazing incidence, form and structure factors must be evaluated for complex scattering vectors, which can be done by analytic continuation.In condensed‐matter scattering, especially under grazing incidence, complex scattering vectors account for absorption and evanescent waves.
Joachim Wuttke
wiley +1 more source
Polarimetry : a powerful diagnostic tool in astronomy
, 2006 Knowledge of the polarization state of radiation provides far more astrophysical information than intensity alone. Polarimetry has played a key role in the development of modern astronomy, providing insight into physical processes occurring in systems to
Hough, J.
core +2 more sources
High‐purity X‐ray polarimetry at high energies for Mössbauer spectroscopy
Journal of Synchrotron Radiation, EarlyView.This work extends high‐purity X‐ray polarimetry into the 15–30 keV range, enabling polarization‐filtered synchrotron Mössbauer spectroscopy of higher‐energy nuclear resonances. A proof‐of‐principle experiment at 22.494 keV demonstrates a polarization purity of (1.2 ± 0.5) × 10−8, establishing the feasibility of the approach.High‐purity X‐ray ...
Berit Marx-Glowna +9 more
wiley +1 more source
Unlocking the Future of X-Ray Polarimetry with IXPE: Lessons Learned and Next Steps
ParticlesThis paper discusses issues encountered during the early development of the instrument on the Imaging X-ray Polarimetry Explorer (IXPE), a NASA–ASI Small Explorer mission launched on 9 December 2021.
Paolo Soffitta +9 more
doaj +1 more source
Polarimetry of Infrared Sources [PDF]
Symposium - International Astronomical Union, 1981 Polarization at infrared wavelengths has been detected from a number of different objects within the Galaxy. These include young sources associated with molecular clouds and H II regions, cool stars with thick circumstellar shells, bi-polar nebulae, and normal stars suffering interstellar polarization.
H. M. Dyck, Carol J. Lonsdale
openaire +1 more source
Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.Abstract Multi‐angle polarimetric instruments (MAPs) enable the retrieval of essential aerosol properties over oceanic regions. MAPs retrieval algorithms commonly use a 1‐parameter ocean bio‐optical model (OBM), based on chlorophyll‐a concentration only to represent optical properties over open waters (case‐1), whereas the coastal water (mixture of ...
Cheng Fan +10 more
wiley +1 more source
Polarimetry from high-altitude balloons [PDF]
, 1967 Polarimetry at 2850a and 2250a from high altitude ...
Gehrels, T., Coyne, G. V.
core