Debra Searles is the professional name for an Australian theoretical chemist whose married name is Debra Bernhardt. She is best known for her contributions towards understanding the Fluctuation Theorem. The fluctuation theorem (FT is a theorem from Statistical mechanics dealing with the relative probability that the Entropy of a system which is currently away from This theorem shows the Second law of thermodynamics and the Zeroth law of thermodynamics can be derived mathematically rather than postulated as laws of Nature. The second law of Thermodynamics is an expression of the universal law of increasing Entropy, stating that the entropy of an Isolated system which The zeroth law of thermodynamics is a generalized statement about thermal Equilibrium between bodies in contact

Contents 1 Personal Profile 2 Research Interests 3 Selected Publications 4 See also 5 External links

Personal Profile

Bernhardt is an Associate Professor in the Faculty of Science at Griffith University. Her PhD studies were in the field of quantum chemistry and her fields of research now include statistical mechanics, dynamical systems theory, nonequilibrium fluids and molecular dynamics simulations of fluids. Dynamical systems theory is an area of Applied mathematics used to describe the behavior of complex Dynamical systems usually by employing Differential

Research Interests

Bernhardt's research interests are in the study of liquids under equilibrium and nonequilibrium conditions, development of the theory of nonequilibrium fluids and use of simulations to assist in understanding experimental results. Current research projects include:

Study of nonequilibrium liquids via statistical mechanics; nonequilibrium molecular dynamics; dynamical systems theory; chaos theory The fluctuation theorem The study of fluids in confined spaces Development of algorithms for molecular dynamics simulations Calculation of liquid properties: Combining molecular dynamics simulations with quantum mechanical calculations to determine properties of liquids

Selected Publications

• D. J. Evans, D. J. Searles and E. Mittag (2001), "Fluctuation theorem for Hamiltonian systems - Le Chatelier's principle", Physical Review E, vol 63, 051105(4). The fluctuation theorem (FT is a theorem from Statistical mechanics dealing with the relative probability that the Entropy of a system which is currently away from In Chemistry, Le Chatelier's Principle, also called the Le Chatelier-Braun principle, can be used to predict the effect of a change in conditions on a Chemical
• H. Huber, B. Kirchner and D. J. Searles, (2002), "Is there an iceberg effect in the water/DMSO mixture?", Journal of Molecular Liquids, vol 98-99, 71-77.
• G. M. Wang, E. M. Sevick, E. Mittag, D. J. Searles and D. J. Evans, (2002) "Experimental demonstration of violations of the Second Law of Thermodynamics , Physical Review Letters, vol 89, 050601. The second law of Thermodynamics is an expression of the universal law of increasing Entropy, stating that the entropy of an Isolated system which
• D. J. Searles and H. Huber, (2002), "Accurate determination of nuclear quadrupole coupling constants and other NMR parameters in liquids from the combination of molecular dynamics simulations and ab initio calculations" , Encyclopedia of Nuclear Magnetic Resonance: A Supplement, (John Wiley & Sons, Ltd, Section Ed T. Farrar), vol 9, 215-226.

See also

• Fluctuation theorem
• Loschmidt's paradox - how can one reconcile thermodynamic irreversibility with the time reversibility inherent in the microscopic equations of motion for both classical and quantum mechanical systems
• Le Chatelier's principle - a nineteenth century principle that defied a mathematical proof until the advent of the Fluctuation Theorem. The fluctuation theorem (FT is a theorem from Statistical mechanics dealing with the relative probability that the Entropy of a system which is currently away from Loschmidt's paradox, also known as the reversibility paradox, is the objection that it should not be possible to deduce an irreversible process from time-symmetric dynamics In Chemistry, Le Chatelier's Principle, also called the Le Chatelier-Braun principle, can be used to predict the effect of a change in conditions on a Chemical
• Crooks fluctuation theorem - an example of transient fluctuation theorem relating the dissipated work in non equilibrium transformations to free energy differences. The Crooks equation (CE is an equation in Statistical Mechanics that relatesthe work done on a system during a non-equilibrium transformation to thefree energy difference between the
• Jarzynski equality - another nonequilibrium equality closely related to the fluctuation theorem and to the second law of thermodynamics
• Green-Kubo relations - there is a deep connection between the fluctuation theorem and the Green-Kubo relations for linear transport coefficients - like shear viscosity or thermal conductivity
• Boltzmann
• Thermodynamics
• Brownian motor

External links

• Griffith Chemistry Debra Bernhardt
• Debra Searles (Bernhardt) [1]

Persondata
NAME	Searles, Debra Joy
ALTERNATIVE NAMES	Debra Berhardt
SHORT DESCRIPTION	Australian theoretical chemist
DATE OF BIRTH
PLACE OF BIRTH
DATE OF DEATH
PLACE OF DEATH

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