“Rob is one of the best managers that I have had the pleasure to work for. He is always there to bounce ideas off, brings a positive attitude the office, and takes a genuine interest in helping me to develop my skills and learn. I never feel like I am working for him as a manager, but rather that we are partners working together to solve problems to help grow our business. ”
Robert Ferris, Ph.D., MBA
Denver Metropolitan Area
2K followers
500+ connections
About
Emerging leader in high-growth businesses that deliver disruptive innovations for a more…
Activity
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Love all the 'so long 2024!' posts - but the team at ESS is working it to the end - great to see these EC's settling in to their new home in Florida,…
Love all the 'so long 2024!' posts - but the team at ESS is working it to the end - great to see these EC's settling in to their new home in Florida,…
Liked by Robert Ferris, Ph.D., MBA
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Very exciting progress by the Sionic Team in our pursuit of market-leading performance in silicon batteries. https://lnkd.in/eh3mP4P4
Very exciting progress by the Sionic Team in our pursuit of market-leading performance in silicon batteries. https://lnkd.in/eh3mP4P4
Liked by Robert Ferris, Ph.D., MBA
Experience
Education
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Duke University - The Fuqua School of Business
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Activities and Societies: Center for Entrepreneurship and Innovation (CEI) P4E Program
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Activities and Societies: MEMS Graduate Leadership Council
My research focuses on the use of nano surface patterning, self assembly, and modeling of interfacial forces. Experience in thin film characterization, surface patterning, and semiconductor processing. Extensive experience with synthesis of polymer-brushes, fabrication of ferroelectric thin films, and nano-scale characterization.
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Activities and Societies: Masters Thesis: Fabrication of a Parlyene Micropump Novel design and fabrication of a biologically compatible peristaltic pump for integration with direct brain injection MEMS Device
Completed all course and thesis requirements in only one semester
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Activities and Societies: President Cornell Chapter AiChE Presidential Scholar Award for demonstrated leadership and integrity National Intel® Undergraduate Research Grant Recipient Proctor and Gamble Technical Excellence Award (2nd place)
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Licenses & Certifications
Publications
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Electric Double Layer Formed by Polarized Ferroelectric Thin Films
ACS Applied Materials and Interfaces
Ferroelectric surfaces can have very high surface charge densities that can be harnessed for manipulation of charged colloidal particles and soft matter in aqueous environments. Here, we report on the electrical double layer (EDL) formed by polarized ultrasmooth lead zirconium titanate (US-PZT) thin films in dilute electrolyte solutions. Using colloidal probe force microscopy (CPFM) measurements, we show that the ion distribution within the double layer can be changed by reversing the…
Ferroelectric surfaces can have very high surface charge densities that can be harnessed for manipulation of charged colloidal particles and soft matter in aqueous environments. Here, we report on the electrical double layer (EDL) formed by polarized ultrasmooth lead zirconium titanate (US-PZT) thin films in dilute electrolyte solutions. Using colloidal probe force microscopy (CPFM) measurements, we show that the ion distribution within the double layer can be changed by reversing the ferroelectric polarization state of US-PZT. The interaction force in dilute 1:1 electrolyte solution between the negatively charged probe and a positive surface charge (upward polarized) US-PZT thin film is attractive, while the interaction force is repulsive for a negative surface charge (downward polarized) film. We modeled these interactions with a constant-potential EDL model between dissimilar surfaces with the inclusion of a Stern layer. We report the surface potentials at the inner and outer-Helmholtz planes both for polarization states and for a range of ionic strength solutions. Effects of free-charge carriers, limitations of the analytical model, and effects of surface roughness are discussed.
Other authorsSee publication -
Stimulus-responsive polymer brushes on surfaces: Transduction mechanisms and applications
Progress in Polymer Science
Stimulus-responsive polymer brushes (SRPBs) exhibit a change in conformation and structure, often accompanied by a noticeable change in surface energy, due to an external stimulus such as a change in solvent composition, temperature, pH, ionic strength, light, or mechanical stress. SRPBs offer exciting and new possibilities to fabricate adaptive or responsive smart materials. This review summarizes selected, recent progress in SRPB applications in the field of surface wettability switching…
Stimulus-responsive polymer brushes (SRPBs) exhibit a change in conformation and structure, often accompanied by a noticeable change in surface energy, due to an external stimulus such as a change in solvent composition, temperature, pH, ionic strength, light, or mechanical stress. SRPBs offer exciting and new possibilities to fabricate adaptive or responsive smart materials. This review summarizes selected, recent progress in SRPB applications in the field of surface wettability switching, mechanical actuation, and environmental sensing. Furthermore, we review selected papers from an emerging area in which SRPBs are used for nano- and microfabrication.
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Ferroelectric Thin Films in Fluidic Environments: A New Interface for Sensing and Manipulation of Matter
Small
For decades ferroelectric thin films (FETFs) have been the focus of research and development for next-generation memory and semiconductor devices. FETFs are attractive because their polarization states are highly localized, stable, and switchable. These unique properties are also attractive for (bio)molecular sensing and separation applications. Polarization of both polymer and ceramic FETF results in the expression of a sustained high, non-Faradaic, surface charge density. If these surface…
For decades ferroelectric thin films (FETFs) have been the focus of research and development for next-generation memory and semiconductor devices. FETFs are attractive because their polarization states are highly localized, stable, and switchable. These unique properties are also attractive for (bio)molecular sensing and separation applications. Polarization of both polymer and ceramic FETF results in the expression of a sustained high, non-Faradaic, surface charge density. If these surface charges are maintained in aqueous environments, then the resulting electrostatic forces should induce the formation of electrolyte gradients and aid in the localization of charged species to the surface. Recently, there has been a growing interest in the interfacial properties of FETFs, specifically how they interact with liquid or gaseous phases. Recent work has shown that the FETF polarization state affects adsorption from the gaseous phase, surface catalysis, and cell growth. Encouraged by these findings, the use of FETFs in aqueous environments is explored. After an introduction to FETFs, the growing body of literature on the FETF interface is reviewed, along with the limited number of studies demonstrating FETF function in gas and liquid environments. Finally, the exciting possibilities that FETFs could bring to interfacial engineering and lab-on-chip (LOC) device design is reviewed.
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Field‐Induced Nanolithography for Patterning of Non‐Fouling Polymer Brush Surfaces
Small
Electric-field induced nanolithography (FINL) on four hydrophilic polymer brushes is demonstrated. FINL is a nanoscale surface patterning method that depends on an electrochemical reaction at the tip–brush interface. FINL feature size depends on the applied bias, relative humidity, and exposure time. FINL patterning yields electrochemically modified brush surfaces that can be used to attach diagnostically relevant probes.
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Positive-tone photoresist process for supercritical carbon dioxide development
Chemistry of Materials
Honors & Awards
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GP Nanofabrication Fellowship
National Science Foundation
This graduate program is designed to address the need for an interdisciplinary graduate education at Duke in Nanoscience that extends beyond the traditional disciplines and skills taught within any existing department.
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Graduate Research Fellowship - Honorable Mention
National Science Foundation
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Graduate Research Fellowship - Honorable Mention
National Science Foundation
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Presidential Scholar Award
Cornell University
Awarded to thirteen members of the 2004 graduating class who have demonstrated leadership, integrity, and perseverance throughout their undergraduate career.
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Intel Undergraduate Research Grant
Intel
One of seventeen undergraduate researchers to receive summer funding and an opportunity to present to top Intel researchers in Santa Clara, CA. Project: Image Reversal through Sylilation for Supercritical Carbon Dioxide Development
Organizations
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American Chemical Society
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International Society of Automation
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- Present
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My alma mater Virginia Tech did an alumni spotlight on me today. No jokes! https://lnkd.in/d48m36RD
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Only about 10% of the low-emissions technologies needed by 2050 to meet global climate commitments are in place. Check out this latest article in…
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