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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Instrumentation for In situ/Operando X-ray Scattering Studies of Polymer Additive Manufacturing Processes
With new opportunities and challenges from additive manufacturing (AM), novel characterization approaches are needed to realize reliable and industry-transferrable material systems and processes. The Complex Scattering Program at the National Synchrotron Light Source II (NSLS-II), a Department of Energy (DOE) Office of Science User Research Facility located at Brookhaven National Laboratory, has capabilities on three beamlines to support in situ and operando soft material additive manufacturing measurements. In this article, we describe some of the additive manufacturing capabilities that have been implemented on these beamlines, including in-line 3D printers for Continuous-flow Direct Writing (CDW), Fused Filament Fabrication (FFF) printing, and an instrument for Electrospray Deposition (ESD). We also describe a development program in autonomous experimentation that will be critical for addressing the complexity involved in optimizing additive manufacturing processes and materials.
Influence of selenophene on the properties of semi-random polymers and their blends with PC 61 BM
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Revealing weak spin-orbit coupling effects on charge carriers in a π -conjugated polymer
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Kinetic viscoelasticity during early polymer-polymer spinodal dewetting
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Single-Crystal Linear Polymers Through Visible Light-Triggered Topochemical Quantitative Polymerization
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Scalable-manufactured randomized glass-polymer hybrid metamaterial for daytime radiative cooling
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The Effect of Membrane Properties on Performance and Transports inside Polymer Electrolyte Membrane Fuel Cells
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Phase Behavior of Polymer-Grafted Nanoparticles in a Binary Polymer Melt.
Abstract not provided.
Phase Behavior of Polymer-Grafted Nanoparticles in a Polymer Melt.
Abstract not provided.
De-risking EPE encapsulants: Modeling polymer-polymer interfaces
Computational efforts of DuraMAT project investigating EPE encapsulants for solar modules.
Electrochemical studies of thin films of conducting polymers and conducting polymer composites deposited on metal and semiconductor electrodes
Electrochemical studies indicate that poly(Isothianaphthene) or PITN, can be p-doped only. Electrochemical properties of PITN and Nafion-PITN in acetonitrile solutions containing tetra-phenyl Phosphonium chloride as supporting electrolyte are compared. In both cases, the electrochemical behavior of thin films are different from that of thick films. In addition, Nafion does not seem to alter the electrochemical properties of PITN. Cyclic voltammetric and chronocoulometric measurements were made to compute the diffusion coefficient of the counter ions. Electrochemical behavior of both PITN and Nafion-PITN in acetonitrile solution containing different counter ions are described. PITN, when electrochemically deposited, apparently neither passivates surface states present nor forms ohmic contacts with p-Si or p(+)Si single-crystal electrodes.