Indian Institute of Technology Delhi

Unitary quantum matter-bounce in a universe with a positive cosmological constant

Abstract We analyze the Wheeler-DeWitt quantization of a spatially flat Friedmann–Lemaïtre–Robertson–Walker universe containing pressureless dust and a positive cosmological constant ( $$\Lambda &gt; 0$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi...

Polyethylene Terephthalate Waste-Derived Linker forMetal-Organic Framework-Based Cathode Catalyst in Microbial ElectrolysisCell for Hydrogen Production

Abstract The microbial electrolysis cell (MEC) enables green biohydrogen production from waste through bioelectrochemical conversion, with a cathode catalyst driving hydrogen recovery. However, conventional cathode catalysts, such as platinum, are cost-intensive owing to expensiv...

Hydrationas a Structural Switch: Controlling MagneticCoupling and CO2 Photoreduction in Transition-Metal HalidePerovskites

Abstract Transition-metal halides are of particular interest because their partially filled d-orbitals, containing unpaired electrons, give rise to distinctive magnetic and electronic properties. Notably, hydration can act as a structural switch, inducing substantial modification...

The joint effects of digital transformation technologies and human lean practices on firm performance: an empirical investigation

Purpose This study examines how human lean practices (HLP), Industry 4.0 (I4.0) technologies, technical lean practices (TLP), operational performance (OP) and sustainable performance (SP) interact within the manufacturing sector of emerging economies under the constraints of a le...

Pipeline Dreams: The STEMM Aspirations of High School Girls in Delhi

The article traces the evolution of interests, choices and goals of high school girls in Delhi, India, as they pursue academic aspirations in Science, Technology, Engineering, Mathematics and Medicine (STEMM). It aims to understand the complex ways in which girls’ aspirations are...

Fundamental understanding of phase incompatibility in HSBR / NR blends and optimization of blend ratio

Abstract Designing hydrogenated styrene–butadiene rubber (HSBR)/natural rubber (NR) elastomer blends is intrinsically challenging because HSBR and NR differ markedly in molecular structure, polarity and cure kinetics, which often leads to phase incompatibility. Nevertheless, if s...

Probe Sonication-DrivenSynthesis of Nb2C MXene/NiCo2O4 Nanocompositesfor High-PerformanceSymmetric Supercapacitors

Abstract The persistent energy-power density trade-off in supercapacitors necessitates advanced electrode materials with synergistic ion transport and redox capabilities. Herein, we report a sonication-assisted synthesis of Nb2C/NiCo2O4 (NCN) nanocomposites, prepared via selectiv...

Large-Area Flexible SERS Sensor Chips Fabricated Using a Combination of Nanosphere Self-Assembly and Glancing Angle Deposition for Chemical and Biological Sensing

Abstract In this work, we combine two highly efficient nanofabrication methods, nanosphere lithography (NSL) and glancing angle deposition (GLAD), to fabricate large-area and low-cost surface-enhanced Raman scattering (SERS) substrates consisting of highly ordered arrays of point...