Search

This document describes the different kinds of tests performed for the Delta Qualification test campaign

This document defines the product assurance requirement application to VISTA project

This document outlines the VISTA Payload Engineering Qualification Model (EQM) qualification testing results

The report includes the functional diagram and schematics of the VISTA Sensor Head 1, as well as the main electronics acquisition and control requirements.

This document outlines the VISTA Payload Engineering Qualification Model (EQM) delta qualification testing procedures

This document outlines the VISTA Payload Engineering Qualification Model (EQM) delta qualification testing results

This report describes the acceptance tests (levels, duration, n. of cycles) performed on VISTA Flight and Spare Models

The aim of this document is to present VISTA Engineering Model 0 (EM_0) technical characteristics

The scope of this document is to define and control the mechanical, electrical, thermal and data interfaces between Tyvak’s MILANI 6U spacecraft bus platform (Bus) and VISTA payload subsystem (Payload), provided by INAF

The aim of this document is to present the Volatile In-Situ Thermogravimetry Analyser (VISTA) Payload (PL) Design and technical characteristics, mission goals and the activity plan to design, manufacturing and managing VISTA instrument.

The aim of the integration procedure is to describe the different phases regarding crystals, PE, mechanical components assembling, materials, and ECSS procedures followed to integrate VISTA Engineering Qualification Model

The aim of this document is to present VISTA Engineering Qualification Model technical characteristics

The reports includes the VISTA SH2 functional diagram, as well as the corresponding main electronics acquisition and control requirements

This document outlines the VISTA Payload Flight Model (FM) acceptance testing procedures and results

This document outlines the VISTA Payload Engineering Qualification Model (EQM) optional testing results

This document outlines the VISTA Payload Flight Model (FM) acceptance testing procedures

This document defines the QCM Quality Control plan for CAMLAB 2.0 project provided by the Consortium and composed by INAF, CNR and Politecnico di Milano. The main goal of PL1 document is to define all the actions that the consortium has identified as required to achieve the quality assurance of the manufactured QCM.

The reports discusses the CAMLAB 2.0 fulfilment of design, performance and temperature requirements

The report describes the CAMLAB 2.0 QCM controller, Main Electronics Units design, harness design and communication with User Interface

The report describes the control unit, functionality, performance and survival test planned on CAMLAB 2.0

The report describes the thermo-mechanical and proximity electronics design of the CAMLAB 2.0 model

The report describes the outcome of Main Electronics, harness and Control unit integration tests, as well as functionality, thermal and performance tests

This document gives a technical offer for production of a small volume of CAMLAB in a potential post-development phase including the price per unit, delivery time, number of units to be produced yearly, supply and customer support duration. In particular, the cost for each CAMLAB subunit, including the service assistance, is described in detail with the timesheet included.

This is the Publisher's version/PDF of the manuscript "Gas sensing properties of Porphyrins-Graphene composite electrospun fibers", finallypublished in Proceedings of the 17th International Meeting on Chemical Sensors - IMCS 2018, 15-19 July, Vienna, Austria, Pages174 - 175, ISBN 978-3-9816876-9-9, https://doi.org/10.5162/IMCS2018/GS4.3(https://www.ama-science.org/proceedings/details/2940). Citation: AVOSSA J., ZAMPETTI E., SCARASCIA MUGNOZZA G., DE CESARE F., PAOLESSE R., DI NATALE C., MACAGNANO A. (2018). Gas sensing properties of Porphyrins-Graphene composite electrospun fibers. Proceedings of the 17th International Meeting on Chemical Sensors - IMCS 2018, 15-19 July, Vienna, Austria, pp. 174 - 175, ISBN 978-3-9816876-9-9,https://doi.org/10.5162/IMCS2018/GS4.3(https://www.ama-science.org/proceedings/details/2940).&nbsp

The report describes the breaboard thermo-mechanical design, including electronics and user interface

The report describes the CAMLAB's breaboard, crystal and proximity electronics manufacture and the control unit development

Specifications of the CAMLAB breadboard are defined on the basis of the system requirements. In this report all the requirements and their influence on design and test activities concerning the CAMLAB breadboard are discussed.

The report describes the planned tests on the CAMLAB breadboard: main electronics integration, control unit integration, thermal, functionality and performance tests.

The report describes the final structure of the CAM Engineering Model, the work toward a flight model and the its space and non-space applicability

The report describes the functionality, stability, performance and radiation tests performed on the CAM EM.

The report described the fulfillment of requirements given in the Statement of Work

The report described the ongoing activities about the manufacture of the CAM EM's sensor head and proximity electronics and the update of the test plan

The report describes the CAM Engineering Model design (sensor head, user interface, proximity electronics, main electronics)

The report describes the manufacture of the CAM Engineering Model's sensor head and proximity electronics and development of the user interface

The report described CAM design of sensor heads, proximity electronics and main electronics

The report describes risk assessment and mitigation and critical items procurement plan concerning to the VISTA development for MarcoPoloR

The report described trade-off analyses about configuration, crystals, design, materials, electronics

This document includes the VISTA product tree, the verification and model philosophy, as well as the description of tests that will be performed (both at unit and sub-unit level) and of facilities which will be used.

Usually, ammonium in soil is carried out through steam distillation of ammonia obtained after alkalinization of soil extracts and further back titration of the collected solutions. Alternatively, ion selective electrodes (ISE) specific for ammonium ions can be used, in order to measure their concentration in aqueous soil extracts. The aim of this study is to assess the possibility to use, alternatively to the previous techniques, two kinds of chemical sensors able to measure NH3, such as an interdigital microelectrode (IDE) coated of conductive polymer and a sensors array, usually named electronic nose (EN), based on quartz crystal microbalances (QCMs) covered with functionalized polymers. These sensors were chosen on the base of their ability to detect NH3 in sample headspace (specifically or aspecifically, respectively). Therefore, NH4+ in solution was converted to NH3 by alkalinizing soil extracts. Sensors were calibrated at first against known concentrations of NH4+. Results were compared with those obtained with an ISE for NH4+.

Adsorption and detection of environmental total gaseous mercury (TGM) was studied by using gold nanoparticles (AuNPs) on purpose functionalized with dithiol ligands, i.e. Biphenyl-4,4′-dithiol (BI) or p-Terphenyl-4,4′′-dithiol (TR), suitable for nanoparticles based network formation. AuNPs-BI and AuNPs-TR with size 6–8 nm were deposited onto quartz fibres and used as adsorbent materials for the detection of TGM, both indoor for adsorption studies, at defined concentrations (∼4.5 ng m−3 Hg), and outdoor, at the vapour mercury concentration of the environmental countryside (∼1.5 ng m−3 Hg). The role of relative humidity (RH) in the absorption process has been observed. A high Hg adsorption capability, also when exposed to sub ppb concentration, has been observed. A cold vapour atomic fluorescence spectroscopy (CVAFS) detector was used to determine gaseous mercury concentrations lower than 2 ng m−3, with a robust and reproducible procedure. Moreover, the use of quartz fibres substrate covered with AuNPs-BI or AuNPs-TR, and used for more than thirty times during the experiments, makes them competitive in the use in large-scale measurement campaigns.

In the present work, the study and the performances of an adsorbent material for gaseous mercury employed in different diffusive bodies geometries is presented. The material is based on gold nanoparticles (AuNPs) deposited on quartz fibres filters, suitable for bonding the gaseous mercury through an amalgamation process. Following thermal desorption and analysis, the behavior of different diffusive samplers prototypes was compared. Both indoor and outdoor exposures were carried out in order to evaluate the advantages and shortcomings of the geometries in study at different sites. From the outdoor long-term exposures, a constant uptake rate (Ur), with a low influence coming from the environmental conditions, was observed for the axial geometry, reporting a high coefficient of determination (R2 0.97). Indoor exposures showed a higher reproducibility, along with a higher coefficient of determination (R2 0.99). The presented results allowed us to observe different behaviors coming from two kinds of diffusive samplers designs, showing different adsorption rates and data dispersion. This allowed us to focalize our attention on the most suitable design from these two tested prototypes, for this kind of adsorbent material.

The potentials to use the working temperature to tune both the sensitivity and the selectivity of a chemical sensor based on a nanostructured and nanocomposite polymer layer have been investigated and described. Thus, in a single step, a peculiar chemical layer was grown up onto IDE (Interdigitated Electrode) microtransducers by electrospinning deposition and using a single-needle strategy. The 3-component nanofibers, obtained from a mixture of polystyrene and polyhydroxibutyrate (insulating thermoplastics) and a known concentration of mesoporous graphitized carbon nanopowder, appeared highly rough on the surface and decorated with jagged islands but homogeneous in shape and diameter, with the nanofillers aggregated into clusters more or less densely packed through the fibers. The resulting sensor was conductive at room temperature and could work between 40 and 80°C without any apparent degradation. As the fibrous sensing layer was heated, the current increased and the sensitivity to some classes of VOCs such as an oxidizing gas drastically changed depending on the working temperature. More in detail, the sensor resulted highly sensitive and selective to acetic acid at 40°C but the sensitivity fell down, decreasing by 96%, when the sensor operated at 80°C. On the other hand, although an increase in temperature caused a general decrease in sensitivity to the tested VOCs (with a maximum of 14, 81, and 78% for amine, acetone and toluene, respectively) and water vapors (with a maximum of 55%), higher temperature affected only slightly the amine permeation, thus modifying the partial selectivity of the sensor to these chemicals. Conversely, when the operating temperature increased, the sensitivity to the detected gas, NO2, increased too, reporting a ~2 ppb limit of detection (LOD), thus confirming that the temperature was able to drive the selectivity of nanocomposite polymeric sensors.

Our previous study of interaction between low intensity radiation at 53.37 GHz and cell-size system – such as giant vesicles – indicated that a vectorial movement of vesicles was induced. This effect among others, i.e. elongation, induced diffusion of fluorescent dye di-8-ANEPPS, and increased attractions between vesicles was attributed to the action of the field on charged and dipolar residues located at the membrane–water interface. In an attempt to improve the understanding on how millimeter wave radiation (MMW) can induce this movement we report here a real time evaluation of changes induced on the movement of giant vesicles. Direct optical observations of vesicles subjected to irradiation enabled the monitoring in real time of the response of vesicles. Changes of the direction of vesicle movement are demonstrated, which occur only during irradiation with a “switch on” of the effect. This MMW-induced effect was observed at a larger extent on giant vesicles prepared with negatively charged phospholipids. The monitoring of induced-by-irradiation temperature variation and numerical dosimetry indicate that the observed effects in vesicle movement cannot be attributed to local heating.