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1.
Aerosol spectral optical properties in the Paris urban area and its peri-urban and forested surroundings during summer 2022 from ACROSS surface observations
Ludovico Di Antonio, Claudia Di Biagio, Paola Formenti, Aline Gratien, Vincent Michoud, Christopher Cantrell, Astrid Bauville, Antonin Bergé, Mathieu Cazaunau, Griša Močnik, 2025, izvirni znanstveni članek

Opis: Abstract. The complex refractive index (CRI; n−ik) and the single scattering albedo (SSA) are key parameters driving the aerosol direct radiative effect. Their spatial, temporal, and spectral variabilities in anthropogenic–biogenic mixed environments are poorly understood. In this study, we retrieve the spectral CRI and SSA (370–950 nm wavelength range) from in situ surface optical measurements and the number size distribution of submicron aerosols at three sites in the greater Paris area, representative of the urban city, as well as its peri-urban and forested rural environments. Measurements were taken as part of the ACROSS (Atmospheric Chemistry of the Suburban Forest) campaign in June–July 2022 under diversified conditions: (1) two heatwaves leading to high aerosol levels, (2) an intermediate period with low aerosol concentrations, and (3) an episode of long-range-transported fire emissions. The retrieved CRI and SSA exhibit an urban-to-rural gradient, whose intensity is modulated by the weather conditions. A full campaign average CRI of 1.41−0.037i (urban), 1.52−0.038i (peri-urban), and 1.50−0.025i (rural) is retrieved. The imaginary part of the CRI (k) increases and the SSA decreases at the peri-urban and forest sites when exposed to the influence of the Paris urban plume. Values of k > 0.1 and SSA < 0.6 at 520 nm are related to a black carbon mass fraction larger than 10 %. Organic aerosols are found to contribute to more than 50 % of the aerosol mass and up to 10 % (urban), 17 % (peri-urban), and 22 % (forest) of the aerosol absorption coefficient at 370 nm. A k value of 0.022 (370 nm) was measured at the urban site for the long-range-transported fire episode.
Ključne besede: aerosol optical properties, aerosol refractive index, absorption, air pollution
Objavljeno v RUNG: 17.03.2025; Ogledov: 381; Prenosov: 3
.pdf Celotno besedilo (8,42 MB)
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2.
Electrocatalytic properties of iron phosphides toward reduction of nitrogen to ammonia
Beata Rytelewska, Iwona A. Rutkowska, Takwa Chouki, Saim Emin, Pawel Jozef Kulesza, 2023, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: electrocatalytic properties, iron phosphides
Objavljeno v RUNG: 08.01.2025; Ogledov: 518; Prenosov: 0
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Synthesis and optical properties of Cr-doped ▫$Bi2_Se_3$▫ topological insulator nanoplatelets
Blaž Belec, Thanveer Thajudheen, Sandra Gardonio, Mattia Fanetti, Matjaž Valant, 2024, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: topological insulators, optical properties, synthesis
Objavljeno v RUNG: 30.09.2024; Ogledov: 997; Prenosov: 2
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Investigation of the electronic properties of MXene thin films : written report
Lea Gelo, 2024, raz. nal. na višji ali visoki šoli

Ključne besede: MXene thin films, electronic properties
Objavljeno v RUNG: 02.07.2024; Ogledov: 1336; Prenosov: 0
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8.
Unveiling cathodoluminescence in ▫$Bi_2Se_3$▫ : a plasmonic signature?
Thanveer Thajudheen, Blaž Belec, Mattia Fanetti, Matjaž Valant, 2024, objavljeni povzetek znanstvenega prispevka na konferenci

Ključne besede: cathodoluminescence, optical properties, topological insulators
Objavljeno v RUNG: 12.06.2024; Ogledov: 1513; Prenosov: 3
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9.
From electrons to emission : exploring cathodoluminescence for advanced material characterization
Blaž Belec, Thanveer Thajudheen, Mattia Fanetti, 2024, objavljeni povzetek znanstvenega prispevka na konferenci (vabljeno predavanje)

Ključne besede: cathodoluminescence, optical properties, topological insulators
Objavljeno v RUNG: 12.06.2024; Ogledov: 1585; Prenosov: 3
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