All Outputs (10)

Spectral Green's-function method in driven open quantum dynamics (2021)
Journal Article

A method based on spectral Green's functions is presented for the simulation of driven open quantum dynamics that can be described by the Lindblad master equation in Liouville density operator space. The method extends the Hilbert space formalism and... Read More about Spectral Green's-function method in driven open quantum dynamics.

Heteronuclear DNP of 1H and 19F nuclei using BDPA as a polarizing agent (2020)
Journal Article

This work explores the dynamic nuclear polarization (DNP) of 1H and 19F nuclei in a sample of 25/75 (% v/v) fluorobenzene/toluene containing the radical 1,3-bisphenylene-2-phenylallyl radical (BDPA) as a polarizing agent. Previously, heteronuclear ef... Read More about Heteronuclear DNP of 1H and 19F nuclei using BDPA as a polarizing agent.

DNP-NMR of surface hydrogen on silicon microparticles (2019)
Journal Article

Dynamic nuclear polarization (DNP) enhanced nuclear magnetic resonance (NMR) offers a promising route to studying local atomic environments at the surface of both crystalline and amorphous materials. We take advantage of unpaired electrons due to def... Read More about DNP-NMR of surface hydrogen on silicon microparticles.

Solvent evaporation driven entrapment of magnetic nanoparticles in mesoporous frame for designing a highly efficient MRI contrast probe (2018)
Journal Article

The present work reports a novel strategy of assembling maghemite (γ-Fe2O3) nanoparticles (NPs) in mesoporous silica host for developing a highly efficient MRI contrast probe. Shrinkage of hydrophobic environment due to the continuous evaporation of... Read More about Solvent evaporation driven entrapment of magnetic nanoparticles in mesoporous frame for designing a highly efficient MRI contrast probe.

Many-body kinetics of dynamic nuclear polarization by the cross effect (2018)
Journal Article

Dynamic nuclear polarization (DNP) is an out-of-equilibrium method for generating nonthermal spin polarization which provides large signal enhancements in modern diagnostic methods based on nuclear magnetic resonance. A particular instance is cross-e... Read More about Many-body kinetics of dynamic nuclear polarization by the cross effect.

Phase transitions in electron spin resonance under continuous microwave driving (2017)
Journal Article

We study an ensemble of strongly coupled electrons under continuous microwave irradiation interacting with a dissipative environment, a problem of relevance to the creation of highly polarized non-equilibrium states in nuclear magnetic resonance. We... Read More about Phase transitions in electron spin resonance under continuous microwave driving.

Dynamic nuclear polarisation by thermal mixing: quantum theory and macroscopic simulations (2016)
Journal Article

A theory of dynamic nuclear polarisation (DNP) by thermal mixing is suggested based on purely quantum considerations. A minimal 6-level microscopic model is developed to test the theory and link it to the well known thermodynamic model. Optimal condi... Read More about Dynamic nuclear polarisation by thermal mixing: quantum theory and macroscopic simulations.

Solid effect DNP polarization dynamics in a system of many spins (2016)
Journal Article

We discuss the polarization dynamics during solid effect dynamic nuclear polarization (DNP) in a central spin model that consists of an electron surrounded by many nuclei. To this end we use a recently developed formalism and validate first its perfo... Read More about Solid effect DNP polarization dynamics in a system of many spins.

Dynamic Nuclear Polarization as Kinetically Constrained Diffusion (2015)
Journal Article

Dynamic nuclear polarization (DNP) is a promising strategy for generating a significantly increased nonthermal spin polarization in nuclear magnetic resonance (NMR) and its applications that range from medicine diagnostics to material science. Being... Read More about Dynamic Nuclear Polarization as Kinetically Constrained Diffusion.

Spin dynamic simulations of solid effect DNP: the role of the relaxation superoperator (2014)
Journal Article

Relaxation plays a crucial role in the spin dynamics of dynamic nuclear polarisation. We review here two different strategies that have recently been used to incorporate relaxation in models to predict the spin dynamics of solid effect dynamic nuclea... Read More about Spin dynamic simulations of solid effect DNP: the role of the relaxation superoperator.