Deposition and characterization of graphite-black coating for absolute pyroelectric detectors

Mellouki, I.; Touayar, O.; Ktari, T.; Yacoubi, N.

doi:10.1016/j.infrared.2003.11.010

Cited by 17 publications

(6 citation statements)

References 11 publications

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“…In this study, we chose colloidal graphite as the PTC layer material. This is because carbon materials (e.g., graphite and CNT) provide a high efficiency in conversion of light to heat [ 28 – 30 ] and hence are used in various fields such as printing technology and thermal-type infrared sensing. Since colloidal graphite shows a high absorption efficiency at wide wavelength range [ 31 – 32 ], it may be used for improving the photothermal excitation efficiency.…”

Section: Resultsmentioning

confidence: 99%

Efficiency improvement in the cantilever photothermal excitation method using a photothermal conversion layer

Inada¹,

Asakawa²,

Kobayashi³

et al. 2016

Beilstein J. Nanotechnol.

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SummaryPhotothermal excitation is a cantilever excitation method that enables stable and accurate operation for dynamic-mode AFM measurements. However, the low excitation efficiency of the method has often limited its application in practical studies. In this study, we propose a method for improving the photothermal excitation efficiency by coating cantilever backside surface near its fixed end with colloidal graphite as a photothermal conversion (PTC) layer. The excitation efficiency for a standard cantilever of PPP-NCHAuD with a spring constant of ≈40 N/m and a relatively stiff cantilever of AC55 with a spring constant of ≈140 N/m were improved by 6.1 times and 2.5 times, respectively, by coating with a PTC layer. We experimentally demonstrate high stability of the PTC layer in liquid by AFM imaging of a mica surface with atomic resolution in phosphate buffer saline solution for more than 2 h without any indication of possible contamination from the coating. The proposed method, using a PTC layer made of colloidal graphite, greatly enhances photothermal excitation efficiency even for a relatively stiff cantilever in liquid.

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Section: Resultsmentioning

confidence: 99%

Efficiency improvement in the cantilever photothermal excitation method using a photothermal conversion layer

Inada¹,

Asakawa²,

Kobayashi³

et al. 2016

Beilstein J. Nanotechnol.

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“…Past results made on graphite coating reflectance, are given in VIS-NIR domain for absolute pyroelectric detectors applications [12]. This study served us to build an electrically pyroelectric detector and therefore a national radiometric scale from the UV-visible to the near infrared wavelength ranges using available graphite-black coating [15].…”

Section: Spectral Reflectance Measurementmentioning

confidence: 97%

“…For these facilities, two types of optical absorbing coatings were investigated in the IR domain and at low temperatures. First was graphite-black coating, which was commercially on a container spray under pressure for electrical applications [12], and second was matt black paint; both are deposed on substrates simply by pulverization, using spin-on coating at room temperature [12,13]. This depositing process remained the principle advantage according gold-black coating deposition.…”

Section: Introductionmentioning

confidence: 99%

IR characterization of graphite black-coating for cryogenic detectors

Mellouki¹,

Bennaji²,

Yacoubi³

2007

Infrared Physics & Technology

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“…Then they were given every six months approximately and this in order to study their fluctuation over time. The method of measurement of the resistances R s and R sh was largely detailed in several publications [9,10].…”

Section: Study Of the Series (R S )mentioning

confidence: 99%

Stability Study of the Metrological Characteristics of a ZnO/PS/C-Si Photodiode (PSiZ) Used as a Transfer

Achour¹,

Touayar²,

Sifi³

2012

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This paper presents the results of a stability study of a photodiode realized in the Laboratoire de Métrologie des Rayonnements (LMR-INSAT, Tunisia). The study was performed during six years and concerned with the photodiode optical and electrical characteristics. This study involves in one side, the reflectivity stability for different wavelengths and in the other side, the stability of the series and shunt resistances. The experimental results confirm the stability of the photodiode spectral response since the reflection coefficient maximum uncertainty is equal to 0.0055 with an experimental uncertainty of about 0.0016 (at 1 level) for the mean value of the reflectivity over the study duration. Moreover, the shunt and series resistances are equal to 5.14 kΩ and 7.61 Ω respectively with an uncertainty value of 0.01 kΩ and 0.04 Ω respectively (at 1 level). This photodiode does not display any ageing aspect. Consequently, the PSiZ photodiode can be used as a Transfer Standard for radiometric measurement in the visible spectral range.

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Deposition and characterization of graphite-black coating for absolute pyroelectric detectors

Cited by 17 publications

References 11 publications

Efficiency improvement in the cantilever photothermal excitation method using a photothermal conversion layer

Efficiency improvement in the cantilever photothermal excitation method using a photothermal conversion layer

IR characterization of graphite black-coating for cryogenic detectors

Stability Study of the Metrological Characteristics of a ZnO/PS/C-Si Photodiode (PSiZ) Used as a Transfer

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