Charge Redistribution Mechanisms in SnSe2Surfaces Exposed to Oxidative and Humid Environments and Their Related Influence on Chemical Sensing

Tin diselenide (SnSe2) is a van der Waals semiconductor, which spontaneously forms a subnanometric SnO2 skin once exposed to air. Here, by means of surface-science spectroscopies and density functional theory, we have investigated the charge redistribution at the SnO2-SnSe2 heterojunction in both oxidative and humid environments. Explicitly, we find that the work function of the pristine SnSe2 surface increases by 0.23 and 0.40 eV upon exposure to O2 and air, respectively, with a charge transfer reaching 0.56 e-/SnO2 between the underlying SnSe2 and the SnO2 skin. Remarkably, both pristine SnSe2 and defective SnSe2 display chemical inertness toward water, in contrast to other metal chalcogenides. Conversely, the SnO2-SnSe2 interface formed upon surface oxidation is highly reactive toward water, with subsequent implications for SnSe2-based devices working in ambient humidity, including chemical sensors. Our findings also imply that recent reports on humidity sensing with SnSe2 should be reinterpreted, considering the pivotal role of the oxide skin in the interaction with water molecules. ©PID2019-109525RB-I00; Horizon 2020 Framework Programme, H2020: 730872; Ministerio de Economía y Competitividad, MINECO: CEX2018-000805-M, E12H1800010001; Ministero dell’Istruzione, dell’Università e della Ricerca, MIUR; Ministry of Education and Science of the Russian Federation, Minobrnauka: FEUZ-2020-0060This work has been partially supported by the Spanish Ministerio de Ciencia e Innovación under Project PID2019-109525RB-I00. D.F. acknowledges financial support from the Spanish Ministry of Economy and Competitiveness, through the “María de Maeztu” Programme for Units of Excellence in R&D (CEX2018-000805-M). D.F. and A.A.T. acknowledge the project CALIPSOplus under Grant Agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. A.P. and G.D. acknowledge the CERIC–ERIC Consortium for the access to the Nanospectroscopy facility and financial support. G.D. acknowledges funding of a Ph.D. fellowship from PON Ricerca e Innovazione 2014–2020 (Project E12H1800010001) by the Italian Ministry of University and Research (MIUR). D.W.B. acknowledges the support by the Ministry of Science and Higher Education of the Russian Federation (through the basic part of the government mandate, Project No. FEUZ-2020-0060)

Morfologia dell’edificio e sua influenza nelle prestazioni termiche

Analisi dell'influenza delle caratteristiche formali e tecnologiche degli edifici in rapporto agli obiettivi di ecoefficienza energetica. Sensibilità e suscettività degli edifici in rapporto alla forma, ai materiali costitutivi, alle caratteristiche dell'involucro edilizio. Tecnologie sostenibili per il controllo bioclimatico ed energetico degli edifici. Sistemi passivi per il riscaldamento ed il raffrescamento degli ambienti. Quadro dei sistemi tecnologici bioclimatici per il guadagno termico naturale negli ambienti, per il raffrescamento, per il controllo igrometrico e di qualità dell'aria. Descrizione di alcune tipolgie di sistemi passivi per il guadagno termico solare negli edifici e per il raffrescamento degli ambienti

Valutazioni prestazionali e indirizzi per l’uso delle facciate a doppio involucro secondo criteri di efficienza energetica

L'uso del vetro per la riduzione degli effetti negativi derivanti dai mutamenti climatici. Valutazioni e caratteristiche prestazionali di livello tecnico, ambientale ed energetico delle frontiere edilizie realizzate con la tecnologia del doppio involucro vetrato. Illustrazione ed analisi delle possibili configurazioni e correlazioni con le caratteristiche del comfort ambientale di tipo indoor, con le caratteristiche di sicurezza, di aspetto architettonico e di impatto ambientale. Indirizzi di progettazione per l'uso ecoefficiente della tecnologia a doppia facciata vetrata

EXPLAINING INTERACTION OF GUILT AND OBSESSIVE-COMPULSIVE SYMPTOMS IN NOT JUST RIGHT EXPERIENCES

Objective: “Not Just Right Experiences” (NJREs) are currently considered a characteristic of Obsessive–Compulsive Disorder (OCD). Significant associations have been found between NJREs and Obsessive–Compulsive (OC) symptoms in nonclinical and clinical populations. Literature support a significant relationship between NJREs, feelings of guilt and OC features. This study aims to clarify the role of the potential interplay between guilt and OC symptomatology in NJREs and verify if high levels of guilt will predict NJREs and OC symptoms and trait guilt levels will positively interact in their prediction of NJREs. Method: One hundred and eighty-nine adults recruited from normal population were assessed with questionnaires of NJREs and OC symptoms and proneness to experience guilt. Results: All the variables involved in the study (NJREs severity, guilt and OCI-R scores) were positively and significantly correlated and showed that guilt and OCI-R scores significantly and positively interact in the prediction of NJREs levels. Guilt predicted NJREs only when levels of OCI-R were high. Conclusions: These results support the association between guilt sensitivity or OC symptoms and NJREs in clinical and nonclinical participants and that a disposition toward high levels of guilt and OC symptoms have a particular sensitivity to NJREs corroborating centrality of guilt in OC symptoms

Attentional disengagement, craving, and mentalizing: a preliminary experimental study among older-aged male gamblers

Introduction: Empirical studies have demonstrated the role that attentional bias, the mutual excitatory relationship between attentional bias and craving, and mentalizing play in problem gambling. Although problem gambling rates among older-aged adults have steadily increased in recent years, research studies among this cohort are scarce. The present study is the first to empirically investigate attentional bias, as well as the joint role of attentional bias, craving, and mentalizing among older-aged gamblers. Method: Thirty-six male older-aged gamblers were administered the South Oaks Gambling Screen (SOGS), the Gambling Craving Scale (GACS), and the Reflective Functioning Questionnaire (RFQ-8) to assess gambling severity, craving levels, and mentalizing, respectively. Participants also performed a modified Posner Task to investigate attentional biases. Results: Hierarchical linear regression analysis showed that among older-aged male gamblers, GACS Anticipation and RFQ-8 Uncertainty about mental states, as well as disengagement bias at 100 ms, significantly predicted gambling severity. Conclusion: The present study provides the first empirical support for the role of attentional bias, craving, and mentalizing among older-aged gambling. More specifically, a difficult in disengaging attention away from gambling, the anticipation of pleasure deriving from gambling, and hypomentalizing predicted gambling severity among older-aged gamblers. The findings make an important contribution, by identifying the factors responsible for problem gambling among this specific age cohort and suggesting that timely interventions for mentalizing and attentional bias may be necessary to prevent problem gambling in old age

Pagliuzze e legnetti Caselvetrano, Italien, 1. Preis

Pubblicazione del progetto vincitore del 1° premio della competizione internazionale Europan 6 sul sito italiano di Castelvetrano