Browsing NTNU Open by Author "Pettersen, Sigurd Rolland"
Now showing items 1-9 of 9
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A novel Characterization Method for electric Properties of single Silver-coated Polymer Spheres
Stokkeland, August Emil Tobiesen (Master thesis, 2015)The electrical properties of isotropic conductive adhesives (ICAs) are dependent on the filler concentration and electrical properties of the conductive additives. ICAs with metal-coated polymer spheres (MPS) are an efficient ... -
CONDUCTION MECHANISMS IN CONDUCTIVE ADHESIVES WITH METAL-COATED POLYMER SPHERES
Pettersen, Sigurd Rolland (Doctoral theses at NTNU;2016:349, Doctoral thesis, 2016)Isotropic conductive adhesives (ICAs), i.e. polymer adhesives with a percolating network of filler particles embedded for conductivity, have been used as alternatives to soldering in electronic devices for decades. More ... -
Contact Resistance and Metallurgical Connections Between Silver Coated Polymer Particles in Isotropic Conductive Adhesives
Pettersen, Sigurd Rolland; Kristiansen, Helge; Nagao, Shijo; Helland, Susanne; njagi, john; Suganuma, Katsuaki; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2016)Recently, there has been an increasing interest in silver thin film coated polymer spheres as conductive fillers in isotropic conductive adhesives (ICAs). Such ICAs yield resistivities similar to conventional silver flake ... -
Controlling the Conduction Mechanisms in Isotropic Conductive Adhesives with Silver-Coated Polymer Spheres
Pettersen, Sigurd Rolland; Kristiansen, Helge; Redford, Keith; Helland, Susanne; Kalland, Erik; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2016)Replacing the silver flakes in conventional isotropic conductive adhesives (ICAs) with micron sized polymer spheres coated with tens to hundreds nanometer of silver (AgPS) drastically reduces the silver content required ... -
Cross-linking oxidized cellulose nanofibrils for the formation of stable hydrogel structures
Pettersen, Sigurd Rolland (Master thesis, 2013)The main goal of this project was to investigate whether the elastic properties of microfibrillated cellulose (MFC) suspensions pre-treated by TEMPO-mediated oxidation could be controlled by inducing cross-links between ... -
Electrical four-point probing of spherical metallic thin films coated onto micron sized polymer particles
Pettersen, Sigurd Rolland; Stokkeland, August Emil; Kristiansen, Helge; njagi, john; Redford, Keith; Goia, Dan; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2016)Micron-sized metal-coated polymer spheres are frequently used as filler particles in conductive composites for electronic interconnects. However, the intrinsic electrical resistivity of the spherical thin films has not ... -
Electromechanical characterization of individual micron-sized metal coated polymer particles
Bazilchuk, Molly Strimbeck; Pettersen, Sigurd Rolland; Kristiansen, Helge; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2016)Micron-sized polymer particles with nanoscale metal coatings are essential in conductive adhesives for electronics assembly. The particles function in a compressed state in the adhesives. The link between mechanical ... -
Investigation of thermal transport in polymer composites with percolating networks of silver thin films by the flash diffusivity method
Pettersen, Sigurd Rolland; Nagao, Shijo; Kristiansen, Helge; Helland, Susanne; Njagi, John; Suganuma, Katsuaki; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2017)The flash diffusivity method, also known as laser flash analysis (LFA), is commonly used to obtain the thermal diffusivity (α) and thermal conductivity (κ) of materials, due to its relative simplicity, rapid measurements, ... -
Room-Temperature Curing and Grain Growth at High Humidity in Conductive Adhesives with Ultra-Low Silver Content
Pettersen, Sigurd Rolland; Redford, Keith; njagi, john; Kristiansen, Helge; Helland, Susanne; Kalland, Erik; Goia, Dan; Zhang, Zhiliang; He, Jianying (Journal article; Peer reviewed, 2017)Isotropic conductive adhesives (ICAs) are alternatives to metallic solders as interconnects in solar modules and electronic devices, but normally require silver contents >25 vol.% and elevated curing temperatures to achieve ...