DAV University is a private university in Jalandhar, Punjab, founded in 2013 under the aegis of DAV Trust. DAV University at Jalandhar traces its roots to the legacy of Dayanand Anglo-Vedic Schools System that has been reforming and redefining India's educational scenario for 128 years. The university is the culmination of the movement that started with the foundation of the first DAV institute to propagate the ideals of the religious and social reformer Swami Dayanand Saraswati in Lahore on 1 June 1886. The university has adopted 5 surrounding villages and doing many works of public welfare there. The university is in the process of getting National Assessment and Accreditation Council and Indian Council of Agricultural Research accreditation.
We report a blue-phase liquid crystal (BPLC) formulation that achieves room-temperature operation with ultra-low drive voltage via doping. Four cells were studied: undoped (S-1), MWCNT-doped (S-2), Ag-NP-doped (S-3) and Au-NP-doped (S-4). The field threshold drops from 25 V (S-1) to 10 V (S-2), 2.5 V (S-3) and 0.10 V (100 mV) in S-4, where a complete dark state is reached at 100 mV under crossed polarisers. The blue-phase temperature span for the doped systems is similar to 22.3 degrees C (S-2), similar to 21.6 degrees C (S-3) and similar to 23 degrees C (S-4), each encompassing room temperature, whereas the undoped sample exhibits a different thermal profile and requires much higher voltages for switching. Phase assignment and stability windows were confirmed by polarised optical microscopy, temperature-dependent dielectric spectroscopy and reflectance spectra. These results are supported by a temperature-dependent Landau-de Gennes modelling framework, which links blue-phase stability with electro-optic threshold behaviour. The analysis identifies a crossover from lattice-dominated electrostriction to defect-mediated, plasmon-assisted switching at high disorder. These results demonstrate a practical route to low-power, room-temperature BPLC devices for displays and tunable photonics. [GRAPHICS]
PurposeThe purpose of this study is to investigate the relationship between strategic entrepreneurship (SE) and family business performance (FBP) in India. In addition, this study examines the moderating role of familiness in the relationship between SE and FBP in this underresearched country context within the domain of Resource-Based View.Design/methodology/approachThe authors use a sample of 394 family firms operating in the sports goods manufacturing industry in India. The survey questionnaire was administered to family business entrepreneurs. The hypotheses were tested using structural equation modeling in AMOS.FindingsThe findings of this study reveal a significant positive impact of SE on FBP. Moreover, the results illustrate interaction effects of SE and familiness on FBP.Research limitations/implicationsThis study offers a deeper understanding of the relationship between SE and FBP and the reinforcing effect of familiness on this link. The insights offered can inform decision-making and resource management for family business entrepreneurs operating in manufacturing-cluster contexts similar to the sports goods sector examined here.Originality/valueThis study extends the research on the SE in family firms by examining the moderation effect of familiness on the link between SE and firm performance in India as a relatively understudied country context in emerging markets where a significant portion of the enterprises are family owned.
The integration of Aluminum Gallium Arsenide (AlGaAs) into microstructured Photonic Crystal Fibers (PCFs) creates a highly nonlinear platform which is promising for compact photonic devices. This work presents a comprehensive numerical investigation of ultrashort pulse propagation in AlGaAs glass PCFs using a generalized nonlinear Schr & ouml;dinger equation model that incorporates higher-order dispersion, self-steepening, stimulated Raman scattering, and a competing cubic-quintic nonlinearity. The designed PCF geometry, featuring a seven-ring hexagonal lattice with graded air-hole diameters, is first analyzed to demonstrate strong modal confinement and engineerable anomalous dispersion at telecommunication wavelengths. The exceptionally high nonlinear coefficients, reaching gamma(1) = 24359W(-1)km(-1 )and gamma(2) = -285W(-2)km(-1), facilitate nonlinear processes at femtojoule energy levels. Subsequent analysis reveals the profound influence of higher-order effects on Modulational Instability (MI) gain spectra and soliton dynamics. Self-steepening introduces spectral asymmetry with blue-side suppression, while the Raman response causes a continuous red-shift and temporal delay of solitons via the soliton self-frequency shift. A parametric study further elucidates how pump power, dispersion, and nonlinearity systematically control MI gain bandwidth and amplitude. These findings provide a foundational framework for designing and optimizing AlGaAs PCF-based devices for applications in supercontinuum generation, wavelength conversion, and integrated nonlinear photonics. The results underscore the critical importance of including higher-order nonlinear terms when modeling pulse propagation in semiconductor-doped microstructured fibers.
The analytical investigation of q-Gaussian beam propagation in cold quantum plasma with absorption effects is carried out in current study. The nonlinear differential equation showing response of beam waist with dimensionless distance is obtained within framework of Wentzel–Kramers–Brillouin and paraxial theory approaches. The effect of absorption coefficient is also introduced in present study. The nonlinear differential equation is obtained numerically using standard Runge–Kutta method. The key parameters of laser-plasma including beam intensity, plasma density, q-parameter, beam radius and linear absorption coefficient are systematically varied for exploring beam dynamics of q-Gaussian laser profile. The findings of this study are contrasted with corresponding behavior in classical relativistic plasma for highlighting the distinct features arising due to quantum regime.
Herein, we report a dual-state emissive (DSE) luminophore, DCZHPI, bearing a phenanthroimidazole (PI) core with carbazole substitution. Two concomitant polymorphs (DCZHPI-B and DCZHPI-G) of DCZHPI emerge upon slow evaporation from the MeOH/DCM system, each displaying a butterfly-like molecular architecture. These two polymorphs exhibit distinct luminescence properties due to packing structure variations. DCZHPI exhibits emission from the keto tautomer following an ESIPT mechanism with a large Stokes shift (similar to 120 nm) and high photoluminescence quantum yield (Phi sol = 57% and Phi solid = 2.5-24%). The photophysical properties and ESIPT have been investigated meticulously using experimental and theoretical calculations. Utilizing the photoswitachable properties of DCZHPI, we have demonstrated its application in confidential encoding and anti-counterfeiting writing/printing. We believe that all these properties make DCZHPI a prominent organic luminescent material for promising applications in bioimaging, chemosensing, data encryption, and organic optoelectronic systems.
