Publications

Displaying 1 - 25 of 184

Snakeskin-inspired Elastomers with Extremely Low Coefficient of Friction under Dry Conditions

December 11, 2020

Author(s)

Mengyuan Wang, Sujan Ghosh, Christopher M. Stafford, Adrienne K. Blevins, Sijia Huang, Jaylene Martinez, Rong Long, Christopher N. Bowman, Jason P. Killgore, Min Zou, Yifu Ding

Coating Thickness Controls Crystallinity and Enables Homoepitaxial Growth of Ultra-Thin-Channel Blade-Coated In2O3 Transistors

September 11, 2020

Author(s)

Ahmad R. Kirmani, Huilang Chen, Christopher M. Stafford, Emily G. Bittle, Lee J. Richter

Scalable, solution-deposited metal oxide (MO) thin films could enable low-cost, flexible, large- area electronics; however, the poor morphology of the typically

Thickness-Dependent Permeability of Molecular Layer-By-Layer Polyamide Membranes

August 28, 2020

Author(s)

William D. Mulhearn, Vladimir P. Oleshko, Christopher M. Stafford

We present the thickness-dependent permeability of highly crosslinked polyamide (PA) membranes formed by a molecular layer-by-layer (mLbL) deposition process

X-ray Scattering Studies of Reverse Osmosis Materials

August 25, 2020

Author(s)

Qinyi Fu, Nisha Verma, Benjamin S. Hsiao, Francisco J. Medellin-Rodriguez, Peter A. Beaucage, Christopher M. Stafford, Benjamin M. Ocko

Scarcity of freshwater is becoming a world crisis. In a recent annual risk report, the World Economic Forum lists it in their greatest global risk category

Water-Polyamide Chemical Interplay in Desalination Membranes explored by Ambient Pressure X-ray Photoelectron Spectroscopy

June 24, 2020

Author(s)

Sabrina Gericke, William D. Mulhearn, Dana E. Goodacre, Joseph Raso, Daniel J. Miller, Lauryn Carver, Slavomir Nemsak, Osman Karslioglu, Lena Trotochaud, Hendrik Bluhm, Christopher M. Stafford, Christin Buechner

Reverse osmosis using aromatic polyamide membranes is currently the most important technology for seawater desalination. The performance of reverse osmosis

Quantifying Strain via Buckling Instabilities in Surface Modified Polymer Brushes

May 21, 2020

Author(s)

Cassandra M. Reese, Wei Guo, Brittany J. Thompson, Phillip K. Logan, Christopher M. Stafford, Derek L. Patton

We present a quantitative method of measuring the compressive strain of wrinkled polymer films and coatings with knowledge of the skin thickness, wrinkle

Grafting polysiloxane onto ultrafiltration membranes to optimize surface energy and mitigate fouling

May 18, 2020

Author(s)

Thien Tran, Xiaoyi Chen, Sarthak Doshi, Christopher M. Stafford, Haiqing Lin

Conventional approaches to mitigate fouling of membrane surfaces impart hydrophilicity to the membrane surface, which increases the water of hydration and

Role of the electronically-active amorphous state in low-temperature processed In2O3 thin-film transistors

April 4, 2020

Author(s)

Ahmad R. Kirmani, Christopher M. Stafford, Lee J. Richter, Emily F. Roe

Metal oxide (MO) thin-film transistors (TFTs) are expected to enable low-cost flexible and printed electronics, given their excellent charge transport, low

Nanoscale Pattern Decay Monitored via in-situ Heated Atomic Force Microscopy

March 12, 2020

Author(s)

Sonal Bhadauriya, Jianan Zhang, Jaejun Lee, Michael R. Bockstaller, Alamgir Karim, Richard J. Sheridan, Christopher M. Stafford

We combine in-situ heated atomic force microscopy (AFM) with automated line-by-line spectral analysis to quantify the relaxation or decay of nanopatterned

Insights into the Water Transport Mechanism in Polymeric Membranes from Neutron Scattering

February 5, 2020

Author(s)

Edwin P. Chan, Bradley R. Frieberg, Jacob Daniel Tarver, Madhusudan Tyagi, WenXu Zhnag, Bryan Coughlin, Christopher M. Stafford, Abhishek Roy, Steve Rosenberg, Christopher L. Soles

Polymeric membranes are ubiquitous in a number of transport ap- plications including gas separation, water desalination, solid state batteries and fuel cells

Maximizing the grafting of zwitterions onto the surface of ultrafiltration membranes to improve antifouling properties

February 1, 2020

Author(s)

Nima Shahkaramipour, Amin Jafari, Thien Tran, Christopher M. Stafford, Chong Cheng, Haiqing Lin

Superhydrophilic zwitterions have been extensively exploited for surface modification to improve antifouling properties. However, it remains challenging to form

Reduced Holey Graphene Oxide Membranes for Desalination with Improved Water Permeance

December 13, 2019

Author(s)

Xiaoyi Chen, Zhihao Feng, Janavi Gohil, Christopher M. Stafford, Ning Dai, Liang Huang, Haiqing Lin

Reduced-graphene oxide (r-GO) membranes with narrow channels exhibit salt rejections comparable to conventional nanofiltration (NF) membranes. However, their

Unexpectedly Strong Size-Sieving Ability in Carbonized Polybenzimidazole for Membrane H2/CO2 Separation

November 21, 2019

Author(s)

Maryam Omidvar, Hien Nguyen, Liang Huang, Cara Doherty, Anita Hill, Christopher M. Stafford, Xianshe Feng, Mark Swihart, Haiqing Lin

Polymers with high permeability and strong size-sieving ability are needed for H2/CO2 separation at temperatures ranging from 100 °C to 300 °C to enable an

A general approach to multicomponent metal-decorated crumpled reduced graphene oxide nanocomposites using a flame-based process

September 25, 2019

Author(s)

Mohammad M. Mohammadi, Shikuan Shao, Santosh S. Gunturi, Anirudh R. Raghavan, Naveshkaanth Alexander, Christopher M. Stafford, Raymond D. Buchner, Mark Swihart

A general approach to multicomponent metal-decorated crumpled reduced graphene oxide nanocomposites using a flame-based process Mohammad Moein Mohammadi1

Sequential and one-pot post-polymerization modification reactions of thiolactone-containing polymer brushes

August 19, 2019

Author(s)

Cassandra M. Reese, Brittany J. Thompson, Phillip K. Logan, Christopher M. Stafford, Derek L. Patton, Michael Blanton

Thiolactone chemistry has garnered significant attention as a powerful post-polymerization modification (PPM) route to mutlifunctional polymeric materials. Here

Effect of Adjacent Hydrophilic Polymer Thin Films on Physical Aging and Residual Stress in Thin Films of Poly(butylnorbornene-ran-hydroxyhexafluoroisopropyl norbornene)

June 22, 2019

Author(s)

Elizabeth A. Lewis, Christopher M. Stafford, Bryan D. Vogt

The properties of thin supported polymer films can be dramatically impacted by the substrate upon which it resides. A simple way to alter the properties of the

Controlled Growth of Polyamide Films atop Homogeneous and Heterogeneous Hydrogels using Gel- Liquid Interfacial Polymerization

May 22, 2019

Author(s)

Mengyuan Wang, Christopher M. Stafford, Lewis M. Cox, Adrienne K. Blevins, Masoud Aghajani, Jason P. Killgore, Yifu Ding

Interfacially polymerized polyamide (PA) layers dictate the permselective performance of thin film composite (TFC) membranes. Extensive effort has been focused

Characterizing salt permeability in polyamide desalination membranes using electrochemical impedance spectroscopy

April 27, 2019

Author(s)

Devin L. Shaffer, Kathleen E. Feldman, Edwin P. Chan, Gery R. Stafford, Christopher M. Stafford

Improving the performance of desalination membranes requires better measurements of salt permeability in the polyamide separating layer to elucidate the

Thermally stable cross-linked P84 with Superior Membrane H2/CO2 separation properties at 100 oC

January 6, 2019

Author(s)

Maryam Omidvar, Christopher M. Stafford, Haiqing Lin

Polymers with a strong size-sieving ability and superior H2/CO2 selectivity are of great interests for pre-combustion CO2 capture at 100 oC or above. Polyimides

Tuning the Relaxation of Nano-Patterned Polymer Films with Polymer-Grafted Nanoparticles: Observation of Entropy-Enthalpy Compensation

November 6, 2018

Author(s)

Sonal Bhadauriya, Xiaoteng Wang, Jack F. Douglas, Praveen Pitliya, Jianan Zhang, Dharmaraj Raghavan, Michael R. Bockstaller, Christopher M. Stafford, Alamgir Karim

Polymer films provide a versatile plastic material in which complex functional relief patterns can be imprinted with a resolution down to tens of nanometers

Quantifying Carboxylic Acid Concentration in Model Polyamide Desalination Membranes via Fourier Transform Infrared Spectroscopy

August 21, 2018

Author(s)

Tawanda J. Zimudzi, Kathleen E. Feldman, Michael A. Hickner, Christopher M. Stafford

Carboxylic acid groups impart hydrophilicity and ionizable groups to polyamide membranes for desalination, hence influencing water and ion transport through the

Short-time dental resin biostability and kinetics of enzymatic degradation

May 9, 2018

Author(s)

Xiaohong Wang, Sheng Song, Lei Chen, Christopher M. Stafford, Jirun Sun

Resin biostability is an important concern regarding the durability of methacrylate-based dental resin restorations. Current resin biostability evaluation

Functional Group Quantification of Polymer Nanomembranes with Soft X-rays

March 15, 2018

Author(s)

Daniel F. Sunday, Edwin P. Chan, Sara V. Orski, Ryan C. Nieuwendaal, Christopher M. Stafford

Spectroscopic and mechanical characterizations for degradation behaviors of EVA encapsulants in glass/EVA/glass systems

February 28, 2018

Author(s)

Jae Hyun Kim, Christopher M. Stafford, Yadong Lyu, Andrew Fairbrother, Julien Avenet, David C. Miller, Xiaohong Gu

Buckling Instabilities in Polymer Brush Surfaces via Postpolymerization Modification

October 30, 2017

Author(s)

Wei Guo, Cassandra M. Reese, Li Xiong, Phillip K. Logan, Brittany J. Thompson, Christopher M. Stafford, Anton Ievlev, Bradley S. Lokitz, Olga S. Ovchinnikova, Derek L. Patton

We report a simple route to engineer ultrathin polymer brush surfaces with wrinkled and creased morphologies using postpolymerization modification (PPM), where

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