ABSTRACT
PurposeThe current study focuses on the role of antecedents to prevent perceived job insecurity and mitigate its negative impacts on work-related well-being. The study examined variables of the resourceful environment (effective organizational communication and involvement), conserved resources (perceived employability and emotional exhaustion) and resource loss (job insecurity) by drawing on the Conservation of Resources (COR) theory for predicting the work-related well-being adding the moderating role of boundaryless career orientation.Design/methodology/approachA sample of 306 salespersons of pharmaceutical companies working in Pakistan was obtained. The hypothesized relationships were tested through structural equation modeling in SmartPLS.FindingsThe results confirmed showed that the organizational communication, employee involvement and perceived employability reduce the perceived job insecurity;however, the emotional exhaustion was positively related. It also confirmed the moderating effect of boundaryless career orientation on relationship of job insecurity and well-being.Practical implicationsTo make employees engaged, the organizations are required to involve employees by sharing knowledge, information and power to make decisions, value their opinion and ensuring the employability. Further, salespersons having a preference of a boundaryless career proved to mitigate negative impact of job insecurity on work-related well-being.Originality/valueMany empirical studies have identified that the perceived job insecurity is one of the major concerns affecting employee's well-being. However, few studies simultaneously have sought to prevent the perceived job insecurity among employees. The findings are important in developing the understanding that how salespersons perceive their capabilities and the work environment of the organization, this perception;resultantly, can influence their behaviors particularly the work engagement dimension of well-being.
ABSTRACT
Van der Waals (vdW) heterostructures composed of atomically thin two-dimensional (2D) materials have more potential than conventional metal-oxide semiconductors because of their tunable bandgaps, and sensitivities. The remarkable features of these amazing vdW heterostructures are leading to multi-functional logic devices, atomically thin photodetectors, and negative differential resistance (NDR) Esaki diodes. Here, an atomically thin vdW stacking composed of p-type black arsenic (b-As) and n-type tin disulfide (n-SnS2 ) to build a type-III (broken gap) heterojunction is introduced, leading to a negative differential resistance device. Charge transport through the NDR device is investigated under electrostatic gating to achieve a high peak-to-valley current ratio (PVCR), which improved from 2.8 to 4.6 when the temperature is lowered from 300 to 100 K. At various applied-biasing voltages, all conceivable tunneling mechanisms that regulate charge transport are elucidated. Furthermore, the real-time response of the NDR device is investigated at various streptavidin concentrations down to 1 pm, operating at a low biasing voltage. Such applications of NDR devices may lead to the development of cutting-edge electrical devices operating at low power that may be employed as biosensors to detect a variety of target DNA (e.g., ct-DNA) and protein (e.g., the spike protein associated with COVID-19).
ABSTRACT
Field-effect transistors (FET) composed of transition metal dichalcogenide (TMDC) materials have gained huge importance as biosensors due to their added advantage of high sensitivity and moderate bandgap. However, the true potential of these biosensors highly depends upon the quality of TMDC material, as well as the orientation of receptors on their surfaces. The uncontrolled orientation of receptors and screening issues due to crossing the Debye screening length while functionalizing TMDC materials is a big challenge in this field. To address these issues, we introduce a combination of high-quality monolayer WSe2 with our designed Pyrene-based receptor moiety for its ordered orientation onto the WSe2 FET biosensor. A monolayer WSe2 sheet is utilized to fabricate an ideal FET for biosensing applications, which is characterized via Raman spectroscopy, atomic force microscopy, and electrical prob station. Our construct can sensitively detect our target protein (streptavidin) with 1 pM limit of detection within a short span of 2 min, through a one-step functionalizing process. In addition to having this ultra-fast response and high sensitivity, our biosensor can be a reliable platform for point-of-care-based diagnosis.