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Article
Electrothermally actuated artificial muscles from the silver-polyethylene-terephthalate core–shell structure
Develo** compliant-artificial muscles for applications in soft robotics and flexible electronics is of practical importance. In this work, we construct Ag-PET (silver-polyethylene-terephthalate) twist-coiled...
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Article
Water-driven surface wrinkling of poly(2-hydroxyethyl methacrylate) after ultraviolet irradiation
Engineering surface structures/textures have opened new avenues for various applications in lab-on-chip, flexible electronics, photonics, and so forth. In this work, we demonstrate the possibility of water-dri...
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Article
Creep deformation of poly(methyl methacrylate)-multiwalled carbon nanotube composites
Considering the long-term structural stability of polymer-nanotube composites under different service conditions, we investigate the tensile creep of polymer-nanotube composites consisting of poly(methyl metha...
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Article
Methanol-assisted crack healing in UV-irradiated poly(methyl methacrylate)
The UV irradiation can cause structural degradation of polymer and limit the applications of polymer as structural materials. In this work, the effects of UV irradiation on the mass transport and crack healing...
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Article
Cracking and healing in poly(methyl methacrylate): effect of solvent
In this work, the solvent-induced structural changes of PMMA (poly(methyl methacrylate)) are studied via desorpon of methanol in 2-ethylhexyl alcohol. The desorption of methanol from PMMA specimens causes the ...
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Article
Hardness Evolution of Gamma-Irradiated Polyoxymethylene
This study focuses on analyzing hardness evolution in gamma-irradiated polyoxymethylene (POM) exposed to elevated temperatures after irradiation. Hardness increases with increasing annealing temperature and ti...
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Article
Effect of ultraviolet-irradiation on peeling-induced formation of surface gratings on PMMA films
Using the peeling-induced splitting method, the effect of the irradiation of ultraviolet (UV) light on the formation of surface gratings on the surface of PMMA(Poly(Methyl Methacrylate))-based films is investi...
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Article
Isothermal crystallization kinetics of syndiotactic polystyrene exposed to gamma radiation in vacuum
The effect of gamma radiation in vacuum on the isothermal crystallization kinetics of syndiotactic polystyrene (sPS) was investigated via differential scanning calorimetry (DSC), Fourier transform infrared spe...
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Article
Methanol desorption in poly(methyl methacrylate) with stress distributions
Understanding solvent transport in polymers is of practical importance for the applications of polymers in the fields of food packaging, biomedical bandages, materials engineering, etc. We studied one-side des...
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Article
Effect of gamma ray on isothermal crystallization kinetics of syndiotactic polystyrene
Isothermal crystallization kinetics of gamma-irradiated syndiotactic polystyrene (sPS) has been investigated by differential scanning calorimetry. Amorphous sPS samples were irradiated in air with gamma ray at...
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Article
Nanoindentation creep in polycarbonate and syndiotactic polystyrene
This study focuses on nanoindentation creep in polycarbonate (PC) and syndiotactic polystyrene (sPS) throughout the transient and steady-state regions. The viscoelastic Burgers model is used to explain transie...
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Article
Modeling of exact viscoelastic stresses in bilayer systems due to thermal and/or lattice mismatch: Maxwell model
The exact solution of viscoelastic stresses in the bilayer system due to thermal and/or lattice mismatch is derived if both layers are Maxwell materials. When the thickness of one layer is much smaller than th...
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Article
Measurements of residual stresses in Al film/silicon nitride substrate microcantilever beam systems
Microcantilevers fabricated by microelectromechanical system processes were used to study the residual stresses in the film/substrate systems. Aluminum films were deposited on silicon nitride substrates by the...
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Article
The effects of humidity and surface free energy on adhesion force between atomic force microscopy tip and a silane self-assembled monolayer film
The relationship between atomic force microscopy probe-sample adhesion force and relative humidity (RH) at five different levels of surface free energy (γs) of an organic self-assembled monolayer (SAM) has been i...
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Article
Wet Oxidation in a Square Sandwich Composite of GaAs/AlAs/GaAs
Wet oxidation in a square sandwich composite, GaAs/AlAs/GaAs, with varying thickness of the AlAs layer was investigated in a temperature range of 400°C–480°C. At a given temperature and time, the oxidation dep...
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Chapter and Conference Paper
Residual Stresses in Nano-Film/Substrate Systems
Residual stresses in elastic multi-layer film/elastic substrate systems were derived in closed-form solutions. There are always three unknowns to be solved and three equilibrium conditions to be satisfied. The...
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Article
Transport kinetics of methanol in hydroxyethyl methacrylate homopolymer and its copolymers
The kinetics of methanol transport in 2-hydroxyethyl methacrylate (HEMA) homopolymer and 75/25 and 50/50 mol fraction HEMA/DHPMA (2,3-dihydroxypropyl methacrylate) copolymers at five different temperatures has...
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Article
Quantitative study of water transport during the hydrolysis of polymer coatings exposed to water vapor
Thermoset acrylic–melamine resins are widely used for automobile exterior coatings. These materials are formulated by reacting an acrylic polyol with an alkylated melamine. Because the reactions are reversible...
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Article
Wet oxidation kinetics of AlAs at elevated temperatures
Wet oxidation in the AlAs layer sandwiched between two GaAs plates was investigated for the temperature range of 400 to 480 °C. The oxidation rate increased with increasing thickness of the AlAs layer. Theoret...
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Article
Model of fatigue damage in strain-rate-sensitive composite materials
A fatigue damage accumulation model based on the Paris law is proposed for strain-rate-sensitive polymer composite materials. A pre-exponent factor c2/f and strain-rate-sensitive exponent n are introduced. Numeri...
