Browsing by Issue Date, starting with "2023-03-23"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
- A Review on the Progress of Optoelectronic Devices Based on TiO2 Thin Films and NanomaterialsPublication . Ge, Shunhao; Sang, Dandan; Zou, Liangrui; Yao, Yu; Zhou, Chuandong; Fu, Hailong; Xi, Hongzhu; Fan, Jianchao; Meng, Lijian; Wang, CongTitanium dioxide (TiO2) is a kind of wide-bandgap semiconductor. Nano-TiO2 devices exhibit size-dependent and novel photoelectric performance due to their quantum limiting effect, high absorption coefficient, high surface-volume ratio, adjustable band gap, etc. Due to their excellent electronic performance, abundant presence, and high cost performance, they are widely used in various application fields such as memory, sensors, and photodiodes. This article provides an overview of the most recent developments in the application of nanostructured TiO2-based optoelectronic devices. Various complex devices are considered, such as sensors, photodetectors, light-emitting diodes (LEDs), storage applications, and field-effect transistors (FETs). This review of recent discoveries in TiO2-based optoelectronic devices, along with summary reviews and predictions, has important implications for the development of transitional metal oxides in optoelectronic applications for researchers.
- Does digital media use contribute to decreased expressive language skills of pre-school-aged children? An exploratory study in Portuguese childrenPublication . Monteiro, Rita; Ferreira, Simão; Fernandes, Sandra; Rocha, NunoThe purpose of this study was to analyse the relationship between digital media use and expressive language skills in the semantic and morphosyntactic domains, of pre-school-aged children (3 years-and-0 months to 5 years-and-11 months). Verbal oral expression (VOE) tasks of the Pre-school Assessment of Language Test (Teste de Linguagem-Avaliação da Linguagem Pré-Escolar) were administered to 237 pre-school children with no previous identified neurological or developmental conditions associated with language disorders to assess expressive language skills in the semantic and morphosyntactic domains. Parents completed a questionnaire about their children’s medical conditions, development (using the milestones of the Survey of Well-being of Young Children and the Pre-school Paediatric Symptom Checklist), and exposure to screens (using ScreenQ). Correlations between VOE and continuous variables such as ScreenQ were computed and a regression model incorporating all variables significantly associated with total language verbal expression was created. ScreenQ revealed a negative and significant correlation with children’s verbal oral expression as well as significance in the regression model. Parents’ education was the most significant predictor in this regression model. This study emphasizes the importance of parents establishing limits for digital media use and promote good practices such as co-viewing.