Instrumented Research Vehicle for Quantifying Real-World Emissions

Embry-Riddle Aeronautical University has developed an Instrumented Research Vehicle (IRV) for collecting real-world emissions with remote monitoring via live streaming telemetry. The long-term research goal is to experimentally quantify emissions over repeatable campus drive cycles with and without automated ‘traffic assist’ control laws. This paper presents vehicle instrumentation, drive cycle definition, and baseline results. A Diesel, 4-seat campus vehicle has been equipped with a custom weatherproof, outdoor computing enclosure to house sensors and computers. Using Embry Riddle’s campus as a driving environment to collect data using an emission analyzer to quantify the emissions being produced. An Enerac M700 Portable Emission Analyzer is installed inside the enclosure along with IMU, GPS, and throttle, brake, and steer angle sensors. The outdoor computing enclosure is temperature regulated using thermo-electric devices and a solar heat shield. The enclosure improves reliability of low‑cost prototyping hardware such as Arduino and Raspberry Pi computers. Sensor measurements are collected on‑board and streamed at a lower rate via mobile phone network to an Internet-of-Things (IoT) server for real time, web-based monitoring. Live streaming telemetry architecture and software components are described. The web-based browser routinely achieves \u3e10Hz vehicle updates using open-source software and consumer grade mobile devices. Current data output includes geo-tagged emissions correlated with driver throttle, brake, steering, vehicle speed, orientation (yaw, pitch, roll) and location along the driving course. This driving platform will provide valuable sensitivity data to focus subsequent research efforts on emissions and energy reduction

Interaction of halides with palladium (one hundred) single crystal surfaces studies by ultra high vacuum-eletrochemical

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Interaction of halides with palladium (one hundred) single crystal surfaces studies by ultra high vacuum-eletrochemical

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Size-Dependent and Step-Modulated Supramolecular Electrochemical Properties of Catechol-Derived Adlayers at Pt(hkl) Surfaces

The electrochemical reactivity of catechol-derived adlayers is reported at platinum (Pt) single-crystal electrodes. Pt(111) and stepped vicinal surfaces are used as model surfaces possessing well-ordered nanometer-sized Pt(111) terraces ranging from 0.4 to 12 nm. The electrochemical experiments were designed to probe how the control of monatomic step-density and of atomic-level step structure can be used to modulate molecule–molecule interactions during self-assembly of aromatic-derived organic monolayers at metallic single-crystal electrode surfaces. A hard sphere model of surfaces and a simplified band formation model are used as a theoretical framework for interpretation of experimental results. The experimental results reveal (i) that supramolecular electrochemical effects may be confined, propagated, or modulated by the choice of atomic level crystallographic features (i.e.monatomic steps), deliberately introduced at metallic substrate surfaces, suggesting (ii) that substrate-defect engineering may be used to tune the macroscopic electronic properties of aromatic molecular adlayers and of smaller molecular aggregates.ACJ and MRL thank support from PCUPR, UPRM, and the Institute of Electrochemistry at University of Alicante through project MICINN (Spain) CTQ2010-16271 and Generalitat Valenciana (project PROMETEO/2009/045, Feder)

Size-Dependent and Step-Modulated Supramolecular Electrochemical Properties of Catechol-Derived Adlayers at Pt(<i>hkl</i>) Surfaces

The electrochemical reactivity of catechol-derived adlayers is reported at platinum (Pt) single-crystal electrodes. Pt(111) and stepped vicinal surfaces are used as model surfaces possessing well-ordered nanometer-sized Pt(111) terraces ranging from 0.4 to 12 nm. The electrochemical experiments were designed to probe how the control of monatomic step-density and of atomic-level step structure can be used to modulate molecule–molecule interactions during self-assembly of aromatic-derived organic monolayers at metallic single-crystal electrode surfaces. A hard sphere model of surfaces and a simplified band formation model are used as a theoretical framework for interpretation of experimental results. The experimental results reveal (i) that supramolecular electrochemical effects may be confined, propagated, or modulated by the choice of atomic level crystallographic features (i.e.monatomic steps), deliberately introduced at metallic substrate surfaces, suggesting (ii) that substrate-defect engineering may be used to tune the macroscopic electronic properties of aromatic molecular adlayers and of smaller molecular aggregates