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Change in the carbon nanotube thin layer refractive index after water and ammonia molecules adsorption

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Τίτλος: Change in the carbon nanotube thin layer refractive index after water and ammonia molecules adsorption
Συγγραφείς: Romashkin, Alexey, Rozanov, Roman, Lashkov, Andrey, Vishnevskiy, Alexey, Mitrofanova, Anastasia, Levin, Denis, Svetikov, Vladimir
Στοιχεία εκδότη: St. Petersburg State Polytechnical University Journal. Physics and Mathematics, 2024.
Έτος έκδοσης: 2024
Θεματικοί όροι: интерферометр, integrated optics, sensor, интегральная оптика, interferometer, эллипсометрия, сенсор, углеродная нанотрубка, carbon nanotube, ellipsometry
Περιγραφή: Spray-deposited carboxylated carbon nanotube (CNT) layers were characterized using AFM, Raman, and spectroscopic ellipsometry. The layers’ thickness, diameters and band gap of CNTs, as well as the changes in the CNT layer refractive index at 1319 nm and 2010 nm after H2O and NH3 adsorption in air and H2O in N2 were analyzed. Refractive index changes and modeling the necessary length of the modified interferometer arm for a π/2 phase shift allow us to propose the use of such CNT layers for integrated interferometric sensors and gas recognition.
Карбоксилированные углеродные нанотрубки (УНТ), нанесенные аэрозольным распылением, исследовались с помощью АСМ, комбинационного рассеяния света и спектроскопической эллипсометрии. Проанализированы толщина слоев, диаметры и запрещенная зона УНТ, изменение показателя преломления слоев в ИК диапазоне после адсорбции H2O и NH3 на воздухе и H2O в N2. Расчеты длины модифицированного плеча интерферометра для π/2 фазового сдвига позволяют предложить такие слои УНТ для изготовления интегральных интерферометрических датчиков и распознавания газов.
Τύπος εγγράφου: Other literature type
Γλώσσα: English
DOI: 10.18721/jpm.173.113
Αριθμός Καταχώρησης: edsair.doi...........8dbd4ba7f6bf0fdaea8967ba4d3ca858
Βάση Δεδομένων: OpenAIRE
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  Data: Change in the carbon nanotube thin layer refractive index after water and ammonia molecules adsorption
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  Data: <searchLink fieldCode="AR" term="%22Romashkin%2C+Alexey%22">Romashkin, Alexey</searchLink><br /><searchLink fieldCode="AR" term="%22Rozanov%2C+Roman%22">Rozanov, Roman</searchLink><br /><searchLink fieldCode="AR" term="%22Lashkov%2C+Andrey%22">Lashkov, Andrey</searchLink><br /><searchLink fieldCode="AR" term="%22Vishnevskiy%2C+Alexey%22">Vishnevskiy, Alexey</searchLink><br /><searchLink fieldCode="AR" term="%22Mitrofanova%2C+Anastasia%22">Mitrofanova, Anastasia</searchLink><br /><searchLink fieldCode="AR" term="%22Levin%2C+Denis%22">Levin, Denis</searchLink><br /><searchLink fieldCode="AR" term="%22Svetikov%2C+Vladimir%22">Svetikov, Vladimir</searchLink>
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  Data: St. Petersburg State Polytechnical University Journal. Physics and Mathematics, 2024.
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  Data: Spray-deposited carboxylated carbon nanotube (CNT) layers were characterized using AFM, Raman, and spectroscopic ellipsometry. The layers’ thickness, diameters and band gap of CNTs, as well as the changes in the CNT layer refractive index at 1319 nm and 2010 nm after H2O and NH3 adsorption in air and H2O in N2 were analyzed. Refractive index changes and modeling the necessary length of the modified interferometer arm for a π/2 phase shift allow us to propose the use of such CNT layers for integrated interferometric sensors and gas recognition.<br />Карбоксилированные углеродные нанотрубки (УНТ), нанесенные аэрозольным распылением, исследовались с помощью АСМ, комбинационного рассеяния света и спектроскопической эллипсометрии. Проанализированы толщина слоев, диаметры и запрещенная зона УНТ, изменение показателя преломления слоев в ИК диапазоне после адсорбции H2O и NH3 на воздухе и H2O в N2. Расчеты длины модифицированного плеча интерферометра для π/2 фазового сдвига позволяют предложить такие слои УНТ для изготовления интегральных интерферометрических датчиков и распознавания газов.
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      – Text: English
    Subjects:
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        Type: general
      – SubjectFull: integrated optics
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      – SubjectFull: sensor
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      – SubjectFull: интегральная оптика
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      – SubjectFull: interferometer
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      – SubjectFull: carbon nanotube
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      – SubjectFull: ellipsometry
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      – TitleFull: Change in the carbon nanotube thin layer refractive index after water and ammonia molecules adsorption
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              Type: published
              Y: 2024
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