Paper/GO/e-Au flexible SERS sensors for detection of tricyclazole in orange juice and on cucumber skin at the sub-ppb level: machine learning-assisted data analysis.

Despite being an excellent surface enhanced Raman scattering (SERS) active material, gold nanoparticles were difficult to be loaded onto the surface of filter paper to fabricate flexible SERS substrates. In this study, electrochemically synthesized gold nanoparticles (e-AuNPs) were deposited on graphene oxide (GO) nanosheets in solution by ultrasonication, resulting in the formation of a GO/Au hybrid material. Thanks to the support of GO, the hybrid material could adhere onto the surface of filter paper, which was immersed into a GO/Au solution for 24 h and dried naturally at room temperature.

Enhanced sensing performance of carbaryl pesticide by employing a MnO/GO/e-Ag-based nanoplatform: role of graphene oxide as an adsorbing agent in the SERS analytical performance.

A functional ternary substrate was developed for surface-enhanced Raman scattering (SERS) sensing systems. MnO nanosheets were synthesized by a simple and controllable hydrothermal method, followed by the integration of graphene oxide (GO) nanosheets. Subsequently, MnO/GO nanostructures were decorated with plasmonic Ag nanoparticles (e-AgNPs).

Ultrasensitive detection of crystal violet using a molybdenum sulfide-silver nanostructure-based sensing platform: roles of the adsorbing semiconductor in SERS signal enhancement.

Crystal violet (CV) is an organic dye that is stabilized by the extensive resonance delocalization of electrons over three electron-donating amine groups. This prevents the molecule from being linked to a metal surface, and therefore, reduces the sensitivity of surface-enhanced Raman scattering (SERS) sensors for this toxic dye. In this work, we improved the sensing performance of a silver-based SERS sensor for CV detection by modifying the active substrate.

A manganese dioxide-silver nanostructure-based SERS nanoplatform for ultrasensitive tricyclazole detection in rice samples: effects of semiconductor morphology on charge transfer efficiency and SERS analytical performance.

Taking advantage of metal-semiconductor junctions, functional nanocomposites have been designed and developed as active substrates for surface-enhanced Raman scattering (SERS) sensing systems. In this work, we prepared three types of nanocomposites based on manganese oxide (MnO) nanostructures and electrochemically synthesized silver nanoparticles (e-AgNPs), which differed according to the morphologies of MnO. The SERS performance of MnO nanosheet/e-Ag (MnO-s/e-Ag), MnO nanorod/e-Ag (MnO-r/e-Ag), and MnO nanowire/e-Ag (MnO-w/e-Ag) was then evaluated using tricyclazole (TCZ), a commonly used pesticide, as an analyte.

Precarious Employment and Well-Being: Insights from the COVID-19 Pandemic.

While precarious employment is not a new concept, it has been brought to the center of scholarly and public discourse worldwide by the unprecedented COVID-19 pandemic. This essay delineates how precarious employment shapes well-being and situates that relationship in the context of the COVID-19 pandemic. The essay also provides an overview of how the nine articles boldly investigate how these two layers of global risk-precarious employment and the pandemic-interact to shape individuals' well-being.

Precarious sleep? Nonstandard work, gender, and sleep disturbance in 31 European countries.

Despite the advent of precarious work, little is known about how this form of employment can generate disparities in sleep outcomes. We extend existing work by providing a theoretical framework linking different measures of work precarity to sleep problems. We argue that the association between objective precarious working conditions and sleep disturbance is channeled through and mediated by subjective work precarity.

Employment insecurity and sleep disturbance: Evidence from 31 European countries.

For nearly half a century, jobs have become increasingly characterized by employment insecurity. We examined the implications for sleep disturbance with cross-sectional data from the European Working Conditions Survey (2010). A group of 24,553 workers between the ages of 25 and 65 years in 31 European countries were asked to indicate whether they suffered from "insomnia or general sleep difficulties" in the past 12 months.