Fabrication and Evaluation of Carbon Nanotube-Parylene Functional Composite-Films

Chen, C.-L.; López, Ernesto Ponce; Makaram, Prashanth; Selvarasah, Selvapraba; Busnaina, Ahmed; Jung, Yung Joon; Müftü, Sinan; Dokmeci, Mehmet R.

doi:10.1109/sensor.2007.4300306

Cited by 7 publications

(4 citation statements)

References 7 publications

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“…For comparison, the mechanical properties of neat PC films are listed in table 2. Two types of PC film were considered: one was as-received (Lexan film manufactured by SABIC, formerly GE Plastics) and the other was solution cast in chloroform [25]. As compared to neat PC films, PC/BP composite films showed two-to threefold increases in tensile modulus, while the tensile strength and % elongation decreased by two-to three-fold and by two orders of magnitude, respectively.…”

Section: Tensile Properties and Structure-property Relationshipsmentioning

confidence: 99%

“…These phenomena can be explained from the standpoint of solvent-induced crystallization [26] and the formation of microvoids that occur during the solution-based process; the former tends to stiffen the material, while the latter reduces the material's resistance to failure. The solution-cast neat PC film was fabricated through a carefully controlled process to minimize the degree of crystallization and microvoids [25], resulting in similar mechanical properties as the as-received film. However, during the PC/BP fabrication process, it was difficult to control solvent evaporation as the parameters were coupled with impregnation-related parameters.…”

Section: Tensile Properties and Structure-property Relationshipsmentioning

confidence: 99%

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Mechanical and electrical properties of polycarbonate nanotube buckypaper composite sheets

et al. 2008

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The thermogravimetric, mechanical, and electrical properties of composite sheets produced by infiltrating single-wall carbon nanotube films (also known as 'buckypapers') with polycarbonate solution were characterized. The composite sheets showed improved stiffness and toughness, while the electrical conductivity decreased, as compared to a neat buckypaper. In addition, polycarbonate/buckypaper composite sheets showed higher resistance to handling and processing damages. Experimental results suggest the viability of the infiltration process as a means to toughen buckypapers and to fabricate polymer/carbon nanotube composites having high nanotube concentration and controlled nanotube structure.

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Section: Tensile Properties and Structure-property Relationshipsmentioning

confidence: 99%

Section: Tensile Properties and Structure-property Relationshipsmentioning

confidence: 99%

Mechanical and electrical properties of polycarbonate nanotube buckypaper composite sheets

et al. 2008

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“…Mathematical relationships between electrical properties and mechanical properties have been widely reported in the literature where researchers have been motivated by the desire to create non-destructive testing methods [32][33][34]. In the same way, electrical resistivity of a foam can be measured by applying a voltage between two probes which are in intimate contact with the material and measuring the response voltage, by the following relationship:…”

Section: Electrical Resistivity Principlesmentioning

confidence: 99%

Identification of formation stages in a polymeric foam customised by sonication via electrical resistivity measurements

Torres-Sánchez

Corney

2008

J Polym Res

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nucleation, growth, packing, stiffening, solidification) some of which are known to be more sensitive to external inputs than others. Consequently, precise detection of the start and end points of each of the polymerisation stages would enable the fine control of material properties such as porosity.The development of such process control can only be pursued if those sensitive stages can be clearly distinguished during the manufacture process. This paper reports how an electrical resistivity tracking method was used to assess the differences in the foaming processes when ultrasound was irradiated to polymeric melts undergoing foaming. The electrical resistivity tracking method is also appraised with regard to its suitability to accurately identify the formation stages in the foam, as described by other authors. The polymerisation reactions associated with foam formation have distinct stages (i.e. nucleation, growth, packing, stiffening, solidification) some of which are known to be more sensitive to external inputs than others. Consequently, precise detection of the start and end points of each of the polymerisation stages would enable the fine control of material properties such as porosity. The development of such process control can only be pursued if those sensitive stages can be clearly distinguished during the manufacture process. This paper reports how an electrical resistivity tracking method was used to assess the differences in the foaming processes when ultrasound was irradiated to polymeric melts undergoing foaming. The electrical resistivity tracking method is also appraised with regard to its suitability to accurately identify the formation stages in the foam, as described by other authors.

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“…It is a low-cost material with facile and gentle room-temperature deposition, and is used in numerous applications such as NW optoelectronics [22], various flexible devices (e.g. NWs [23,24], nanotubes [25], 2D materials [26], organic transistors [27]), as corrosion and moisture barrier [23,24], and as conformal planarization material [22]. As such, parylene-C is more versatile compared to materials deposited e.g.…”

Section: Introductionmentioning

confidence: 99%

Management of light and scattering in InP NWs by dielectric polymer shell

et al. 2020

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Understanding and management of light is of great importance for nanoscale devices. This report demonstrates enhanced absorption, photoluminescence and scattering in InP nanowires when coated with dielectric polymer shell. The shells increase absorption and emission by a factor of ~2 and photoluminescence by a factor of ~4. A thorough optical characterization is provided, including reflectance, transmission, luminescence and scattering to incident and transmitted directions. From this characterization, we derive the distribution of absorbed light within the structure (InP nanowires, Au seed particles and the substrate). Additionally, reflectance, transmission and emission are shown to become increasingly diffuse with the dielectric shells. The results are thought to provide better understanding in light-matter interaction in nanostructures, as well as to provide valuable tools for light and scattering management in nanoscale optoelectronics.

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Fabrication and Evaluation of Carbon Nanotube-Parylene Functional Composite-Films

Cited by 7 publications

References 7 publications

Mechanical and electrical properties of polycarbonate nanotube buckypaper composite sheets

Mechanical and electrical properties of polycarbonate nanotube buckypaper composite sheets

Identification of formation stages in a polymeric foam customised by sonication via electrical resistivity measurements

Management of light and scattering in InP NWs by dielectric polymer shell

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