Enhanced Metrological Performances of Organic Electronic Ammonia Sensors Using Electro Spinning Techniques

Hybrid and Bio Nanocomposites for Ultrasensitive Ammonia Sensors

New organic electronic organic ammonia sensors based on hybrid nanocomposites polyaniline-titanium dioxide and on PANI/chitosan with high metrological performances were created. The physical and chemical properties of the nanocomposites were optimized to get a high sensitivity and very low detection threshold (in ppb values). For hybrids, in the core shell form, the performances were analyzed b...

Ultrathin Single‐Crystalline Boron Nanosheets for Enhanced Electro‐Optical Performances

Large-scale single-crystalline ultrathin boron nanosheets (UBNSs, ≈10 nm) are fabricated through an effective vapor-solid process via thermal decomposition of diborane. The UBNSs have obvious advantages over thicker boron nanomaterials in many aspects. Specifically, the UBNSs demonstrate excellent field emission performances with a low turn-on field, Eto, of 3.60 V μm-1 and a good stability. Fu...

Nanostructured Polypyrrole-Based Ammonia and Volatile Organic Compound Sensors

The aim of this review is to summarize the recent progress in the fabrication of efficient nanostructured polymer-based sensors with special focus on polypyrrole. The correlation between physico-chemical parameters, mainly morphology of various polypyrrole nanostructures, and their sensitivity towards selected gas and volatile organic compounds (VOC) is provided. The different approaches of pol...

Metrological Performances of Mass Flow Controllers for Dynamic Gas Diluition

The dynamic method of generating reference Volatile Organic Compounds (VOC) mixtures at trace level requires the uninterrupted blending of the component flows. The accurate control of the dilution air flows can be realized by Mass Flow Controllers (MFC). Accuracy and stability of MFC are here measured and discussed in order to verify their use in dynamic gas dilutors. Long term stability confir...

Ultrathin Nanosheets: Ultrathin Single‐Crystalline Boron Nanosheets for Enhanced Electro‐Optical Performances (Adv. Sci. 6/2015)