Indian Institute of Technology Indore

About: Indian Institute of Technology Indore is a education organization based out in Indore, Madhya Pradesh, India. It is known for research contribution in the topics: Fading & Support vector machine. The organization has 1606 authors who have published 4803 publications receiving 66500 citations.

Facile synthesis of phase pure ZnAl 2 O 4 nanoparticles for effective photocatalytic degradation of organic dyes

Abstract: The present work focuses on the surfactant mediated synthesis of ZnAl2O4 nanoparticles (1−3) using sol–gel method. 1 has been synthesized without any surfactant and during the synthesis of 2 and 3 cationic (cetyltrimethylammonium bromide) and anionic (sodium lauryl sulfate) surfactant, respectively, have been added. 1–3 have been characterized by P-XRD, FT-IR, SEM, SAED, TEM and BET techniques which suggest that surfactant reduces the particle size of ZnAl2O4 nanoparticles to half (12 nm in 1, 6 nm in 2 and 3). Zeta (ζ) potential measurements have been performed to determine the surface charges of all the samples. Moreover, the photocatalytic activities of these ZnAl2O4 nanoparticles have also been investigated. 2 exhibits better adsorption (28–41%) and degradation (97–99%) efficiency for anionic dyes due to high surface area (129.62 m2 g−1) and positively charged surface (ζ potential 30.06 mV). Radical trapping experiments suggest O2 − and OH to be the major reactive species for the degradation of dyes.

Optical limiting performance of meso-tetraferrocenyl porphyrin and its metal derivatives

Abstract: meso-Tetraferrocenyl porphyrin and its metal derivatives were found to be excellent optical limiters towards second harmonic of Q-switched Nd:YAG nanosecond laser. meso-Tetraferrocenyl porphyrin 3a, its zinc 3b, and copper 3c derivatives exhibited superior optical limiting performance than the benchmark fullerene C60, and rest of the metal derivatives 3d–3e are comparable. Reverse saturable absorption phenomena is mainly responsible for the optical limiting behaviour in these compounds. The ratio σex/σ0 was estimated from the nonlinear transmission characteristics of 3a–3e. The ratio σex/σ0 more than 7 was obtained in case of 3a, which makes them attractive candidates as optical limiting material.

TL-HLS: Methodology for Low Cost Hardware Trojan Security Aware Scheduling With Optimal Loop Unrolling Factor During High Level Synthesis

Abstract: Security against hardware Trojan that is capable to change the computational output value is accomplished by employing dual modular redundant (DMR) schedule during high level synthesis (HLS). However, building a DMR for Trojan security is nontrivial and incurs extra delay and hardware. This paper proposes a novel HLS methodology for constraint driven low cost hardware Trojan secured DMR schedule design for loop-based control data flow graphs (CDFGs). Proposed approach simultaneously explores an optimal schedule and optimal loop unrolling factor (U) combination for a low cost Trojan security aware DMR schedule. As a specific example, proposed low cost Trojan secured HLS approach relies on particle swarm optimization algorithm to explore optimized Trojan secured schedule with optimal unrolling that provides security against specific Trojan (causing change in computational output) within user provided area and delay constraints. The novel contributions of this paper are, first an exploration of a low cost Trojan security aware HLS solution for loop-based CDFGs; second, proposed encoding scheme for representing design solution comprising candidate schedule resources, candidate loop unrolling factor and candidate vendor allocation information; third, a process for exploring the a low cost vendor assignment that provides Trojan security; finally, experimental results over the standard benchmark that indicates an average reduction in final cost of ~12% compared to recent approach.

π0 and η meson production in proton-proton collisions at √s = 8 TeV

Abstract: An invariant differential cross section measurement of inclusive $$\pi ^{0}$$ and $$\eta $$ meson production at mid-rapidity in pp collisions at $$\sqrt{s}=8$$ TeV was carried out by the ALICE experiment at the LHC. The spectra of $$\pi ^{0}$$ and $$\eta $$ mesons were measured in transverse momentum ranges of $$0.33.5$$ $$\text{ GeV/c }$$ . However, a deviation from this empirical scaling rule is observed for transverse momenta below $$p_{ \text{ T }} <3.5$$ $$\text{ GeV/c }$$ in the $$\eta /\pi ^0$$ ratio with a significance of $$6.2\sigma $$ .