Search Results - "Choi, Eric J"
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Frequency swept microwaves for hyperfine decoupling and time domain dynamic nuclear polarization
Published in Solid state nuclear magnetic resonance (01-11-2015)“…Hyperfine decoupling and pulsed dynamic nuclear polarization (DNP) are promising techniques to improve high field DNP NMR. We explore experimental and…”
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2
A Platinum Nanowire Sensor for Ethylene in Air
Published in ACS sensors (28-07-2023)“…A single platinum nanowire (PtNW) chemiresistive sensor for ethylene gas is reported. In this application, the PtNW performs three functions: (1) Joule…”
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3
Comparison of Ureteral Stent Biomaterials: Encrustation Profile in Lithogenic Artificial Urine Models
Published in ACS omega (15-08-2023)“…Ureteral stent encrustation significantly limits indwelling time and can lead to downstream urological problems. However, no ideal polymeric biomaterials have…”
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4
Electrode Degradation in Lithium-Ion Batteries
Published in ACS nano (25-02-2020)“…Although Li-ion batteries have emerged as the battery of choice for electric vehicles and large-scale smart grids, significant research efforts are devoted to…”
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5
Sensors Based Upon Nanowires, Nanotubes, and Nanoribbons: 2016-2020
Published in Analytical chemistry (Washington) (12-01-2021)Get full text
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Electron Decoupling with Dynamic Nuclear Polarization in Rotating Solids
Published in Journal of the American Chemical Society (10-05-2017)“…Dynamic nuclear polarization (DNP) can enhance NMR sensitivity by orders of magnitude by transferring spin polarization from electron paramagnetic resonance…”
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7
A Nanojunction pH Sensor within a Nanowire
Published in Analytical chemistry (Washington) (06-09-2022)“…pH sensors that are nanoscopic in all three dimensions are fabricated within a single gold nanowire. Fabrication involves the formation of a nanogap within the…”
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8
Frequency-agile gyrotron for electron decoupling and pulsed dynamic nuclear polarization
Published in Journal of magnetic resonance (1997) (01-04-2018)“…[Display omitted] •The frequency agile gyrotron described herein is capable of electron decoupling.•Various radicals are characterized with DNP over the…”
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Enhancing the Sensitivity of the Virus BioResistor by Overoxidation: Detecting IgG Antibodies
Published in Analytical chemistry (Washington) (17-08-2021)“…The Virus BioResistor (VBR) is a biosensor capable of rapid and sensitive detection of small protein disease markers using a simple dip-and-read modality. For…”
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10
Magic angle spinning NMR below 6 K with a computational fluid dynamics analysis of fluid flow and temperature gradients
Published in Journal of magnetic resonance (1997) (01-01-2018)“…[Display omitted] •Magic angle spinning (MAS) with a sample temperature <6 K.•MAS <6 K at a rotational frequency >8 kHz.•Finite element analysis to model fluid…”
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Instrumentation for cryogenic magic angle spinning dynamic nuclear polarization using 90 L of liquid nitrogen per day
Published in Journal of magnetic resonance (1997) (01-10-2017)Get full text
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12
Magic angle spinning NMR with metallized rotors as cylindrical microwave resonators
Published in Magnetic resonance in chemistry (01-09-2018)“…We introduce a novel design for millimeter wave electromagnetic structures within magic angle spinning (MAS) rotors. In this demonstration, a copper coating is…”
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13
Instrumentation for cryogenic magic angle spinning dynamic nuclear polarization using 90L of liquid nitrogen per day
Published in Journal of magnetic resonance (1997) (01-10-2017)“…[Display omitted] •Counterflow heat exchanger design reduces nitrogen consumption to 90L/day.•Computational fluid dynamics analysis describes heat exchanger…”
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14
Electrodeposition-enabled, electrically-transduced sensors and biosensors
Published in Materials today (Kidlington, England) (01-01-2023)“…[Display omitted] Electrodeposition and electropolymerization have emerged as versatile tools for the fabrication of chemical and biosensors. The literature in…”
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Enhancing the Sensitivity of the Virus BioResistor by Over-Oxidization: Detecting IgG Antibodies
Published in Analytical chemistry (Washington) (04-08-2021)“…The Virus BioResistor (VBR) is a biosensor capable of the rapid and sensitive detection of small protein disease markers using a simple dip-and-read modality…”
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16
Instrumentation for Cryogenic Magic Angle Spinning Dynamic Nuclear Polarization using 90 Liters of Liquid Nitrogen Per Day
Published in Journal of magnetic resonance (1997) (01-09-2017)“…Cryogenic sample temperatures can enhance NMR sensitivity by extending spin relaxation times to improve dynamic nuclear polarization (DNP) and by increasing…”
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