Peter Heszler (November 1, 1958,

Miskolc Miskolc ( , , ; Czech language, Czech and sk, Miškovec; german: Mischkolz; yi, script=Latn, Mishkoltz; ro, Mișcolț) is a city in northeastern Hungary, known for its heavy industry. With a population of 161,265 (1 Jan 2014) Miskolc is the ...

– August 15, 2009,

Szeged Szeged ( , ; see also #Etymology, other alternative names) is List of cities and towns of Hungary#Largest cities in Hungary, the third largest city of Hungary, the largest city and regional centre of the Southern Great Plain and the county seat ...

) was a Hungarian

physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate caus ...

. He is well known for, among others, his research on laser-assisted

nanoparticle A nanoparticle or ultrafine particle is usually defined as a particle of matter that is between 1 and 100 nanometres (nm) in diameter. The term is sometimes used for larger particles, up to 500 nm, or fibers and tubes that are less than 1 ...

synthesis.Publication list of Peter Heszler
/ref> His research included

nanotechnology Nanotechnology, also shortened to nanotech, is the use of matter on an atomic, molecular, and supramolecular scale for industrial purposes. The earliest, widespread description of nanotechnology referred to the particular technological goal o ...

condensed matter physics Condensed matter physics is the field of physics that deals with the macroscopic and microscopic physical properties of matter, especially the solid and liquid phases which arise from electromagnetic forces between atoms. More generally, the sub ...

, materials science, fluctuations and

noise Noise is unwanted sound considered unpleasant, loud or disruptive to hearing. From a physics standpoint, there is no distinction between noise and desired sound, as both are vibrations through a medium, such as air or water. The difference arise ...

laser A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The fir ...

science and chemical

sensors A sensor is a device that produces an output signal for the purpose of sensing a physical phenomenon. In the broadest definition, a sensor is a device, module, machine, or subsystem that detects events or changes in its environment and sends ...

, including

fluctuation-enhanced sensing Fluctuation-enhanced sensing (FES) is a specific type of chemical or biological sensing where the stochastic component, ''noise'', of the sensor signal is analyzed. The stages following the sensor in a FES system typically contain filters and pream ...

. One of his early famous papers was the exact denial of a non-existing phenomenon called quantum 1/f noise. The denial was based on

quantum electrodynamics In particle physics, quantum electrodynamics (QED) is the relativistic quantum field theory of electrodynamics. In essence, it describes how light and matter interact and is the first theory where full agreement between quantum mechanics and spec ...

and proved that the quantum 1/f noise effect does not exist and its theoretical model is incorrect. In the quantum 1/f noise model, the

photons A photon () is an elementary particle that is a quantum of the electromagnetic field, including electromagnetic radiation such as light and radio waves, and the force carrier for the electromagnetic force. Photons are massless, so they alway ...

and their

vacuum state In quantum field theory, the quantum vacuum state (also called the quantum vacuum or vacuum state) is the quantum state with the lowest possible energy. Generally, it contains no physical particles. The word zero-point field is sometimes used as ...

s were omitted from the equations and such errors yielded faulty mathematical predictions for fluctuations that cannot exist because they are forbidden by the basic

orthogonality In mathematics, orthogonality is the generalization of the geometric notion of ''perpendicularity''. By extension, orthogonality is also used to refer to the separation of specific features of a system. The term also has specialized meanings in ...

rules of quantum electrodynamics. Perhaps, his most important breakthroughs are the discovery and application of emission of

thermal radiation Thermal radiation is electromagnetic radiation generated by the thermal motion of particles in matter. Thermal radiation is generated when heat from the movement of charges in the material (electrons and protons in common forms of matter) is ...

from nanoparticles during laser-assisted synthesis. The time dependent spectral analysis of this radiation offers a powerful tool to study the

chemical reactions A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking ...

and their dynamics during laser-assisted nanoparticle fabrication.

Career

Peter Heszler's PhD is from the

University of Szeged , mottoeng = Truth. Bravery. Freedom. , established = , type = Public research university , founder = Emperor Franz Joseph I , affiliation = European University Association, Science Without Borders, Confucius Institute , budget = US$220 mi ...

Hungary Hungary ( hu, Magyarország ) is a landlocked country in Central Europe. Spanning of the Carpathian Basin, it is bordered by Slovakia to the north, Ukraine to the northeast, Romania to the east and southeast, Serbia to the south, Croatia a ...

(1988). His habilitation (Docent) degree is from

University of Uppsala Uppsala University ( sv, Uppsala universitet) is a public research university in Uppsala, Sweden. Founded in 1477, it is the oldest university in Sweden and the Nordic countries still in operation. The university rose to significance during ...

Sweden Sweden, formally the Kingdom of Sweden,The United Nations Group of Experts on Geographical Names states that the country's formal name is the Kingdom of SwedenUNGEGN World Geographical Names, Sweden./ref> is a Nordic country located on ...

(1994). Most of his scientific results were achieved at these two places. During his last years, he was Senior Research Fellow at

and Associate Professor at

Uppsala Uppsala (, or all ending in , ; archaically spelled ''Upsala'') is the county seat of Uppsala County and the List of urban areas in Sweden by population, fourth-largest city in Sweden, after Stockholm, Gothenburg, and Malmö. It had 177,074 inha ...

. Out of science and technology, he was also interested in the history and culture of the interrelation of science and religion, and he held a related course about that at the

Publications by Heszler

''Proc. SPIE Fluctuations and Noise in Photonics and Quantum Optics II,''
Vol. 5468, (Ed. Peter Heszler),

Maspalomas Maspalomas () is a tourist resort in the south of the island of Gran Canaria, Canary Islands, stretching from Bahía Feliz in the east to Meloneras in the west, including the resort towns of San Agustín and Playa del Inglés and San Fernando. ...

, Spain, May 26–28 May 2004, .

References

External links

Scholar Google Profile
{{DEFAULTSORT:Heszler, Peter 1958 births 2009 deaths University of Szeged alumni Uppsala University alumni 20th-century Hungarian physicists