Exponent Failure Analysis Associates Jan 2017 - Jul 2019
Managing Scientist
Pax Labs, Inc. Jan 2017 - Jul 2019
Lead Failure Analysis Engineer
Te Connectivity 2013 - 2016
Conductive Inks Group Leader - Engineer V
Te Connectivity 2011 - 2013
Optical Materials Specialist - Engineer Iv
Te Connectivity 2008 - 2011
Elastomer and Gel Specialist - Engineer Iii
Education:
University of California, Berkeley 2003 - 2008
Doctorates, Doctor of Philosophy, Chemistry
Linfield College 2000 - 2003
Bachelors, Bachelor of Science, Chemistry
Northwestern University 2002 - 2002
University of California
Skills:
Polymers Materials Science Chemistry Materials R&D Characterization Polymer Chemistry Nanotechnology Formulation Optics Design of Experiments Research and Development Research Nanomaterials Adhesives Organic Chemistry Electronics Product Development Ink Printing
Stephane J. G. Berghmans - Brussels, BE Michael A. Oar - San Francisco CA, US Miguel A. Morales - Fremont CA, US Gary W. Adams - Holly Springs NC, US Anne-Marie Prins - Kessel-Lo, BE Nathalie Hendrickx - Wilsele, BE Guenter Feldmeier - Lorsch, DE Rudi Kraemer - Lautertal-Beedenkirchen, DE Bert Bergner - Bensheim, DE Kristof Vastmans - Boutersem, BE
Methods and systems are provided for a dry silicone gel in a closure or interconnect system. The dry silicone gel may be made by reacting a crosslinker, a chain extender, and a vinyl-terminated polydimethylsiloxane. The reaction may be conducted in the presence of a catalyst. In certain embodiments, the dry silicone gel may comprise: (1) a hardness between 100 g and 300 g, (2) a stress relaxation between 30% and 60% when subjected to a deformation of 50% of the original size of the gel, (3) a compression set between 4% and 20% after 50% strain has been applied to the gel for 1000 hours at 70 C. , and/or (4) less than 10% oil bleed out under compression of 1. 2 atm after 60 days at 60 C.
Methods Of Processing High Service Temperature Hydrocarbon Gels
Methods of processing high service temperature crosslinked thermoplastic gels are provided. The methods include combining (a) an oil-swelled physically crosslinked thermoplastic elastomer gel comprising at least one functional group configured to chemically crosslink in the presence of a crosslinker and (b) a crosslinker; maintaining the combination of the physically crosslinked thermoplastic elastomer gel and the crosslinker at a temperature at which they remain substantially unreacted; subsequently heating the combination to a temperature at which the oil-swelled physically crosslinked thermoplastic elastomer gel reacts with the crosslinker.
Mark W. Ellsworth - Dublin CA, US Michael A. Oar - San Francisco CA, US Miguel A. Morales - Fremont CA, US
Assignee:
Tyco Electronics Corporation - Berwyn PA
International Classification:
C08J 9/04 C08L 37/00
US Classification:
521 85, 524517, 521 90
Abstract:
Crosslinked flame retardant thermoplastic elastomer gels are provided. The crosslinked flame retardant thermoplastic elastomer gels comprise a char catalyst, a char former, a maleic anhydride-modified styrene ethylene/butylene styrene polymer, and a softener oil. Methods are provided of making crosslinked flame retardant thermoplastic elastomer gels.
Methods Of Making Chemically Crosslinked Block Copolymer Gels
Mark W. Ellsworth - Dublin CA, US Michael A. Oar - San Francisco CA, US
Assignee:
Tyco Electronics Corporation - Berwyn PA
International Classification:
C08L 53/00
US Classification:
524585, 525 88, 524570, 525 95, 525 98
Abstract:
Methods are provided of making chemically crosslinked block copolymer gels and chemically crosslinked block copolymer gels. The methods include swelling an olefinic block copolymer having a functionalized soft block region and a functionalized hard block region, in a softener oil, and chemically crosslinking the olefinic block copolymer. Compositions are provided comprising a chemically crosslinked olefinic block copolymer having a functionalized hard block region and a functionalized soft block region and a softener oil.
Stephane J.G. Berghmans - Brussels, BE Michael A. Oar - San Francisco CA, US Miguel A. Morales - Fremon t CA, US Gary W. Adams - Holly Springs NC, US Anne-Marie Prins - Kessel-Lo, BE Nathalie Hendrickx - Wilsele, BE
Methods and systems are provided for a dry silicone gel. The dry silicone gel comprises a base polymer having a vinyl-silicone group, a crosslinker, and a chain extender. The dry silicone gel may be made by reacting (a) a first set of components comprising a base polymer having a vinyl-silicone group and an addition cure catalyst with (b) a second set of components comprising a crosslinker, a chain extender, and additional base polymer. In certain circumstances, the base polymer and additional base polymer are vinyl-terminated polydimethylsiloxane.
Hybrid Thermoplastic Gels And Their Methods Of Making
Julian S. Mullaney - Raleigh NC, US Michael A. Oar - San Francisco CA, US
Assignee:
TYCO ELECTRONICS CORPORATION - BERWYN PA
International Classification:
H05K 5/06 C08L 53/00 C08F 299/02
US Classification:
174 5062, 525324, 525323, 524578, 523122, 428 357
Abstract:
Methods, compositions, apparatuses, and systems are provided for a hybrid thermoplastic gel or sealant. The methods comprise providing (a) a base polymer having at least one functional group capable of crosslinking, (b) a functionalized extender, and (c) heat, and reacting the base polymer and functionalized extender in the presence of the heat to form the hybrid thermoplastic gel. The gel composition may comprise 5-40 wt % of a base polymer, 60-95 wt % of a functionalized extender, and 0-10 wt % of a crosslinker. A closure or interconnect system may comprise a housing, a cable, and a hybrid thermoplastic gel or sealant. A telecommunications apparatus may comprise a telecommunications component and a sealant that forms a seal with the telecommunications component. The sealant may comprise a sealant material having a first range of elongation followed by a second range of elongation.
- Berwyn PA, US Miguel A. Morales - Fermont CA, US Michael A. Oar - San Francisco CA, US Anthony B. Idem - Union City CA, US Yiliang Wu - San Ramon CA, US Barry C. Mathews - Fremont CA, US
A method of forming a conductive trace that includes steps of A) selecting a substrate, B) providing a jet dispenser, C) selecting a conductive ink, D) measuring the ink's viscosity (V), E) using Vto select one of criteria (i)-(iv), F) applying the selected criteria to the dispenser, and G) applying the ink onto the substrate; and drying, curing, or annealing the ink to form the conductive trace having ≥4B adhesion. The criteria (i)-(iv) include:
- Berwyn PA, US Mudhafar Hassan-Ali - Menlo Park CA, US Michael A. Oar - San Francisco CA, US Miguel A. Morales - Fremont CA, US Leonard H. Radzilowski - Palo Alto CA, US Yiliang Wu - San Ramon CA, US Barry C. Mathews - Fremont CA, US
International Classification:
H01F 27/28 H01F 27/24 H01F 1/34
Abstract:
An inductor that includes an electrically conductive construct, wherein the electrically conductive construct includes a first layer having a predetermined geometry, wherein the first layer includes at least one conductive material such as a metal; and a second layer oriented parallel to the first layer, wherein the second layer includes at least one soft ferrite, and wherein the second layer is configured in a co-planar arrangement with the first layer.