Surface energy of Parylene C

Chindam, Chandraprakash; Lakhtakia, Akhlesh; Awadelkarim, Osama O.

doi:10.1016/j.matlet.2015.04.009

Cited by 20 publications

(11 citation statements)

References 19 publications

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“…In previous studies [14,15], it was found that that the X-ray reflection spectrum, wetting characteristics, and thicknesses of different bulk Parylene-C films fabricated under identical deposition conditions were the same. Therefore, it was not surprising that the values of the transmittance T ex pt (ν) measured at two different locations each on three different thin films, all fabricated at the same time, were found to differ by no more than ∼ 1.31% in the IR regime.…”

Section: Numerical Analyses and Resultsmentioning

confidence: 96%

“…The number of local minimums in the spectrum of T ex pt (ν) for ν ∈ [15,95] THz was counted as 32. Therefore, after setting N = 32, the resonance frequencies {ν m } N m=1 were read off as the frequencies of those local minimums from the spectrum itself.…”

Section: Determination Ofmentioning

confidence: 99%

“…Previously, our research group has determined the surface energy of bulk Parylene-C polymer, [15] and studied the water wettability, crystallinity, and some elastodynamic properties of microfibrous Parylene-C. [16] In contrast to a fibrous film which can be regarded as a composite material wherein fibers of the polymer are dispersed in air, a bulk film is homogeneous. With an eye toward the use of bulk Parylene-C polymer as a material for infrared (IR) applications, particularly for photonic crystals, [11] we decided to experimentally determine the complex-valued relative permittivity ε r (ν) of bulk Parylene-C polymer as a function of the frequency ν in the 15-149 2 C. Chindam et al…”

Section: Introductionmentioning

confidence: 99%

“…Comparison of T (ν) and T ex pt (ν) for ν ∈[15, 149] THz, as discussed in Section 3.2. Note that T (ν) was calculated with d = 5.95 µm and n(ν) = √ ε r (ν) determined using the entire right side of Equation(2).yields the appropriate U. Here,J = 2324 is the number of datapoints available from the IR spectrometer, ν 1 = 14.988 THz, νJ = 94.989 THz, and ν j+1 − ν j equals either 0.036 THz or 0.033 THz ∀ j ∈ [1,J − 1].…”

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confidence: 99%

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Relative permittivity of bulk Parylene-C polymer in the infrared regime

Chindam

Lakhtakia

Awadelkarim

et al. 2015

Journal of Electromagnetic Waves and Applications

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Infrared spectroscopy experiments in the 15-149 THz spectral regime were performed in the transmission mode on a thin film of bulk Parylene-C polymer at normal incidence. The relative permittivity of bulk Parylene-C polymer in this regime was modeled as comprising a frequency-independent term as well as contributions from 32 Lorentz oscillators. A least-squares minimization algorithm and a hybrid genetic algorithm were used to determine the frequency-independent term as well as all parameters characterizing the Lorentz oscillators from the measured transmittance spectrum itself.

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Section: Numerical Analyses and Resultsmentioning

confidence: 96%

Section: Determination Ofmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Relative permittivity of bulk Parylene-C polymer in the infrared regime

Chindam

Lakhtakia

Awadelkarim

et al. 2015

Journal of Electromagnetic Waves and Applications

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“…The wetting angles of silicon oxide and silicon nitride are in the range of 7–29°. The hydrophilic characteristics of silicon oxide and silicon nitride have been previously shown [3,4,5,6,7,8]. …”

Section: Introductionmentioning

confidence: 99%

Application of Surface Protective Coating to Enhance Environment-Withstanding Property of the MEMS 2D Wind Direction and Wind Speed Sensor

Shin

Lee

Song

et al. 2017

Sensors

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In this study, a microelectromechanical system (MEMS) two-dimensional (2D) wind direction and wind speed sensor consisting of a square heating source and four thermopiles was manufactured using the heat detection method. The heating source and thermopiles of the manufactured sensor must be exposed to air to detect wind speed and wind direction. Therefore, there are concerns that the sensor could be contaminated by deposition or adhesion of dust, sandy dust, snow, rain, and so forth, in the air, and that the membrane may be damaged by physical shock. Hence, there was a need to protect the heating source, thermopiles, and the membrane from environmental and physical shock. The upper protective coating to protect both the heating source and thermopiles and the lower protective coating to protect the membrane were formed by using high-molecular substances such as SU-8, Teflon and polyimide (PI). The sensor characteristics with the applied protective coatings were evaluated.

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Biointerface Coatings With Structural and Biochemical Properties Modifications of Biomaterials

Lee

Christy

et al. 2023

Adv Materials Inter

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fundamental properties from the physical perspective (e.g., surface roughness, hydrophobicity, elasticity, surface structure/ geometry, and mechanical strength) and the chemical perspective (e.g., bio and/or chemical functionality) can affect cellular responses, including cell attachment, proliferation, migration, differentiation, and apoptosis. [1][2][3][4] For instance, cells respond extensively to synthetic extracellular matrix (ECM) on substrates with multiple features, such as chemical composition, geometry and topological features, ligand organization, and substrate stiffness. [5][6][7][8]

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Surface energy of Parylene C

Cited by 20 publications

References 19 publications

Relative permittivity of bulk Parylene-C polymer in the infrared regime

Relative permittivity of bulk Parylene-C polymer in the infrared regime

Application of Surface Protective Coating to Enhance Environment-Withstanding Property of the MEMS 2D Wind Direction and Wind Speed Sensor

Biointerface Coatings With Structural and Biochemical Properties Modifications of Biomaterials

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