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Dr. Blesson Isaac
Idaho National Laboratory

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Research Keywords & Expertise

0 Electrospinning
0 Nanomaterials and nanostructures
0 Municipal solid waste
0 Robotics and Automation
0 Sorting and Sensing of Municipal Solid Waste

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Review
Published: 06 January 2021 in Fibers
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This review paper examines the current state-of-the-art in fabrication of aligned fibers via electrospinning techniques and the effects of these techniques on the mechanical and dielectric properties of electrospun fibers. Molecular orientation, system configuration to align fibers, and post-drawing treatment, like hot/cold drawing process, contribute to better specific strength and specific stiffness properties of nanofibers. The authors suggest that these improved, aligned nanofibers, when applied in composites, have better mechanical and dielectric properties for many structural and multifunctional applications, including advanced aerospace applications and energy storage devices. For these applications, most fiber alignment electrospinning research has focused on either mechanical property improvement or dielectric property improvement alone, but not both simultaneously. Relative to many other nanofiber formation techniques, the electrospinning technique exhibits superior nanofiber formation when considering cost and manufacturing complexity for many situations. Even though the dielectric property of pure nanofiber mat may not be of general interest, the analysis of the combined effect of mechanical and dielectric properties is relevant to the present analysis of improved and aligned nanofibers. A plethora of nanofibers, in particular, polyacrylonitrile (PAN) electrospun nanofibers, are discussed for their mechanical and dielectric properties. In addition, other types of electrospun nanofibers are explored for their mechanical and dielectric properties. An exploratory study by the author demonstrates the relationship between mechanical and dielectric properties for specimens obtained from a rotating mandrel horizontal setup.

ACS Style

Blesson Isaac; Robert M. Taylor; Kenneth Reifsnider. Mechanical and Dielectric Properties of Aligned Electrospun Fibers. Fibers 2021, 9, 4 .

AMA Style

Blesson Isaac, Robert M. Taylor, Kenneth Reifsnider. Mechanical and Dielectric Properties of Aligned Electrospun Fibers. Fibers. 2021; 9 (1):4.

Chicago/Turabian Style

Blesson Isaac; Robert M. Taylor; Kenneth Reifsnider. 2021. "Mechanical and Dielectric Properties of Aligned Electrospun Fibers." Fibers 9, no. 1: 4.

Journal article
Published: 17 November 2020 in Nanomaterials
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This paper deals with the dielectric and mechanical characterizations of polyacrylonitrile (PAN)-aligned electrospun nanofiber mats. A two factor three level full factorial experiment is conducted to understand the effect of various parameters on dielectric and mechanical responses. These responses are recorded against randomly oriented and aligned nanofiber mats. Improved properties of electrospun mats have applications in the field of energy storage and nanocomposite reinforcement. Dielectric and mechanical characterizations of PAN mats are vital, as the aligned electrospun mats were found to be useful in advanced energy and mechanical reinforcement applications. Therefore, it is paramount to understand the effects of system parameters to these properties. The design of experiment (DoE) includes two factors and three level full factorial experiments with concentrations of PAN solutions at 8 wt.%, 9 wt.%, and 10 wt.%, and speed of the rotating mandrel (collector) at 3 volt (V), 4 V, and 5 V inputs. The electric field intensity used in the experiment is 1 kV/cm. DoE is conducted to understand the nonlinear interactions of parameters to these responses. The dielectric and mechanical characterizations of 8 wt.%, 9 wt.%, and 10 wt.% with different speeds for the original and improved systems are discussed. It was observed that at 9 wt.% and at all mandrel speeds, the dielectric and tensile properties are optimum.

ACS Style

Blesson Isaac; Robert M. Taylor; Kenneth Reifsnider. Anisotropic Characterizations of Electrospun PAN Nanofiber Mats Using Design of Experiments. Nanomaterials 2020, 10, 2273 .

AMA Style

Blesson Isaac, Robert M. Taylor, Kenneth Reifsnider. Anisotropic Characterizations of Electrospun PAN Nanofiber Mats Using Design of Experiments. Nanomaterials. 2020; 10 (11):2273.

Chicago/Turabian Style

Blesson Isaac; Robert M. Taylor; Kenneth Reifsnider. 2020. "Anisotropic Characterizations of Electrospun PAN Nanofiber Mats Using Design of Experiments." Nanomaterials 10, no. 11: 2273.

Original articles
Published: 25 February 2015 in Computer-Aided Design and Applications
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The CAD modeling system based on virtual reality (VR) techniques enables the user to create, modify and manipulate 3D CAD models intuitively, and at the same time allows the user to visualize CAD models immersively. This paper presents the research work on the development of haptic interface in the large-scale virtual environment and the integration of such a haptic interface in the VR based CAD modeling system. The haptic device has limited physical workspace compared to the large stereoscopic screen of the virtual environment. There is a mismatch between the workspace of the haptic device and the large-scale virtual environment. The haptic rendering algorithm presented in this paper consists of three parts: haptic workspace moving algorithm, collision detection, and collision response.

ACS Style

Xiaobo Peng; Blesson Isaac. Haptic Interface Technique in Large-Scale Virtual Environment. Computer-Aided Design and Applications 2015, 12, 601 -607.

AMA Style

Xiaobo Peng, Blesson Isaac. Haptic Interface Technique in Large-Scale Virtual Environment. Computer-Aided Design and Applications. 2015; 12 (5):601-607.

Chicago/Turabian Style

Xiaobo Peng; Blesson Isaac. 2015. "Haptic Interface Technique in Large-Scale Virtual Environment." Computer-Aided Design and Applications 12, no. 5: 601-607.