Rahul Shankar

ORCID: 0000-0001-7221-9333
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About
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Research Areas
  • Advanced Sensor and Energy Harvesting Materials
  • Energetic Materials and Combustion
  • Silicone and Siloxane Chemistry
  • Rocket and propulsion systems research
  • Additive Manufacturing and 3D Printing Technologies
  • Polymer composites and self-healing
  • Polymer Nanocomposites and Properties
  • Atomic and Subatomic Physics Research
  • Advanced Battery Technologies Research
  • Interactive and Immersive Displays
  • Particle accelerators and beam dynamics
  • Photochromic and Fluorescence Chemistry
  • Synthetic Organic Chemistry Methods
  • Geophysical and Geoelectrical Methods
  • Electron and X-Ray Spectroscopy Techniques
  • Electrostatic Discharge in Electronics
  • High voltage insulation and dielectric phenomena
  • Physics of Superconductivity and Magnetism
  • Thermal and Kinetic Analysis
  • Particle Accelerators and Free-Electron Lasers
  • Advanced Data Storage Technologies
  • Conducting polymers and applications
  • Magnetic properties of thin films
  • Surfactants and Colloidal Systems
  • Advanced Polymer Synthesis and Characterization

University of Southern Mississippi
2020-2024

University of Ferrara
2023-2024

Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2023-2024

This paper presents the successful application of a phase-lock feedback system to maintain resonance condition radio frequency (rf) spin rotator (specifically, an rf Wien filter) with respect 120 kHz precession in Cooler Synchrotron (COSY) storage ring. Real-time monitoring and filter signal allows relative phase between two be stabilized at arbitrary setpoint. The compensates for deviations by adjusting and/or as needed. With this method, variation demand standard deviation...

10.48550/arxiv.2501.19123 preprint EN arXiv (Cornell University) 2025-01-31

Likened to both thermosets and thermoplastics, vitrimers are a unique class of materials that combine remarkable stability, healability, reprocessability. Herein, this work describes photopolymerized thiol-ene-based vitrimer undergoes dynamic covalent exchanges through uncatalyzed transamination enamines derived from cyclic β-triketones, whereby the low energy barrier for exchange facilitates reprocessing enables rapid depolymerization. Accordingly, an alkene-functionalized β-triketone,...

10.1002/marc.202200249 article EN Macromolecular Rapid Communications 2022-07-20

Poly(vinylidene fluoride) (PVDF) is a semicrystalline polymer that exhibits unique piezoelectric characteristics along with good chemical resistance and high thermal stability. Layer-based material extrusion (MEX) 3D printing of PVDF desired to create complex structures properties; however, the melt processing typically directs formation α crystalline allomorph, which does not contribute response. In this work, was compounded poly(methyl methacrylate) (PMMA) cyclopentyl-polyhedral oligomeric...

10.1021/acsapm.4c00468 article EN cc-by ACS Applied Polymer Materials 2024-05-14

Abstract Polyhedral oligomeric silsesquioxane (POSS) nanostructured chemicals, when incorporated at low levels in thermoplastics, provide processability enhancement and viscosity reduction without compromising other bulk physical properties. POSS has been relatively unexplored high performance polymers, there is incomplete understanding of the mechanisms by which produces flow improvements. In this study, polyethersulfone (PES) was melt‐blended with trisilanolphenyl (TSP)‐POSS dodecaphenyl...

10.1002/app.50537 article EN Journal of Applied Polymer Science 2021-02-08

Electric dipole moments are very sensitive probes of physics beyond the Standard Model. The JEDI collaboration is dedicated to search for electric moment (EDM) charged particles making use polarized beams in a storage ring. In order reach highest possible sensitivity, fundamental parameter be optimized Spin Coherence Time (SCT), i.e., time interval within which stored beam maintain net polarization greater than 1/e. To identify working conditions that maximize SCT, accurate spin-dynamics...

10.22323/1.456.0092 article EN cc-by-nc-nd 2024-07-30

In this work, the effect of long-chain branching (LCB) on tensile properties sulfur-cured, unfilled, polypentenamer rubber (PPR) was investigated. Branched PPR, prepared by ring-opening metathesis copolymerization cyclopentene (CP) and dicyclopentadiene (DCPD), showed improved mechanical strength, demonstrating more than 3 times higher stress at 500% strain compared to its linear counterpart (a homopolymer CP). situ wide-angle X-ray scattering that units caused significant changes in...

10.1021/acsapm.1c00083 article EN ACS Applied Polymer Materials 2021-04-16

The JEDI experiment is dedicated to the search for electric dipole moment (EDM) of charged particles using storage rings, which can be a very sensitive probe physics beyond Standard Model. In order reach highest possible sensitivity, fundamental parameter optimized Spin Coherence Time (SCT), i.e., time interval within stored beam maintain net polarization greater than 1/e. To identify working conditions that maximize SCT, accurate spin-dynamics simulations with code BMAD have been performed...

10.22323/1.433.0024 article EN cc-by-nc-nd 2023-03-27

To probe reaction kinetics and polymer decomposition, energetic filaments composed of aluminum (Al) poly(vinylidene fluoride) (PVDF) with varying hexafluoropropylene (HFP) content are tested for processability combustion characteristics. Rheological crystallization findings indicate that the Al‐binder interfacial interactions disrupted by HFP content. Thermal analysis shows fuel consumption scales Al particle size due to diffusion‐driven Al‐fluoropolymer regardless concentration. Char yield...

10.1002/adem.202100710 article EN Advanced Engineering Materials 2021-08-24

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTSynthesis of surface-functionalized, probe-containing, polymerized vesicles derived from ammonium bromide surfactantsC. Y. Guo, R. Shankar, S. H. Cai, J. Q. Wu, Abe, Rhys N. Thomas, E. Kuo, T. Tarnowski, and KiangCite this: Langmuir 1992, 8, 3, 815–823Publication Date (Print):March 1, 1992Publication History Published online1 May 2002Published inissue 1 March...

10.1021/la00039a015 article EN Langmuir 1992-03-01

Introduction: Non Specific Low Back Pain (NSLBP) is a frequent problem faced by the majority of postmenopausal women at some stage their lives, resulting in significant level disability. Aim: To evaluate effectiveness core stabilisation exercises compared to traditional physical treatment with NSLBP. Materials and Methods: A prospective longitudinal study was conducted from January 2022 August 2022, including 50 aged 45-60 years They were placed into two groups. Conventional LBP therapy...

10.7860/jcdr/2023/60303.17264 article EN cc-by-nc-nd JOURNAL OF CLINICAL AND DIAGNOSTIC RESEARCH 2022-12-22

This work studies the effect of interlayer adhesion on mechanical performance fluorinated thermoplastics produced by fused deposition modeling (FDM). Here, we study anisotropic response 3D-printed binary blends poly (vinylidene fluoride) (PVDF) and (methyl methacrylate) (PMMA) with isotropic these fabricated via injection molding. Various PVDF/PMMA filament compositions were twin-screw extrusion and, subsequently, injection-molded or 3D printed into dog-bone shapes. Specimen thermal...

10.3390/ma15228062 article EN Materials 2022-11-15

10.18429/jacow-ipac2021-mopab239 article EN 12th International Particle Accelerator Conference (IPAC'21), Campinas, SP, Brazil, 24-28 May 2021 2021-08-01
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