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Spectroscopy is the field of study that measures and interprets the electromagnetic spectra that result from the interaction between electromagnetic radiation and matter as a function of the wavelength or frequency of the radiation. Matter waves and acoustic waves can also be considered forms of radiative energy, and recently gravitational waves have been associated with a spectral signature in the context of the Laser Interferometer Gravitational-Wave Observatory (LIGO).
Theoretical chemistry is the branch of chemistry which develops theoretical generalizations that are part of the theoretical arsenal of modern chemistry: for example, the concepts of chemical bonding, chemical reaction, valence, the surface of potential energy, molecular orbitals, orbital interactions, and molecule activation.
Atomic, molecular, and optical physics (AMO) is the study of matter-matter and light-matter interactions; at the scale of one or a few atoms and energy scales around several electron volts. The three areas are closely interrelated. AMO theory includes classical, semi-classical and quantum treatments. Typically, the theory and applications of emission, absorption, scattering of electromagnetic radiation (light) from excited atoms and molecules, analysis of spectroscopy, generation of lasers and masers, and the optical properties of matter in general, fall into these categories.
Raman spectroscopy is a spectroscopic technique typically used to determine vibrational modes of molecules, although rotational and other low-frequency modes of systems may also be observed. Raman spectroscopy is commonly used in chemistry to provide a structural fingerprint by which molecules can be identified.
Raman scattering or the Raman effect is the inelastic scattering of photons by matter, meaning that there is both an exchange of energy and a change in the light's direction. Typically this effect involves vibrational energy being gained by a molecule as incident photons from a visible laser are shifted to lower energy. This is called normal Stokes Raman scattering. The effect is exploited by chemists and physicists to gain information about materials for a variety of purposes by performing various forms of Raman spectroscopy. Many other variants of Raman spectroscopy allow rotational energy to be examined and electronic energy levels may be examined if an X-ray source is used in addition to other possibilities. More complex techniques involving pulsed lasers, multiple laser beams and so on are known.
Molecular physics is the study of the physical properties of molecules and molecular dynamics. The field overlaps significantly with physical chemistry, chemical physics, and quantum chemistry. It is often considered as a sub-field of atomic, molecular, and optical physics. Research groups studying molecular physics are typically designated as one of these other fields. Molecular physics addresses phenomena due to both molecular structure and individual atomic processes within molecules. Like atomic physics, it relies on a combination of classical and quantum mechanics to describe interactions between electromagnetic radiation and matter. Experiments in the field often rely heavily on techniques borrowed from atomic physics, such as spectroscopy and scattering.
Mostafa A. El-Sayed is an Egyptian-American physical chemist, a leading nanoscience researcher, a member of the National Academy of Sciences and a US National Medal of Science laureate. He was the editor-in-chief of the Journal of Physical Chemistry during a critical period of growth. He is also known for the spectroscopy rule named after him, the El-Sayed rule.
William Esco Moerner is an American physical chemist and chemical physicist with current work in the biophysics and imaging of single molecules. He is credited with achieving the first optical detection and spectroscopy of a single molecule in condensed phases, along with his postdoc, Lothar Kador. Optical study of single molecules has subsequently become a widely used single-molecule experiment in chemistry, physics and biology. In 2014, he was awarded the Nobel Prize in Chemistry.
Giacinto Scoles is a European and North American chemist and physicist who is best known for his pioneering development of molecular beam methods for the study of weak van der Waals forces between atoms, molecules, and surfaces. He developed the cryogenic bolometer as a universal detector of atomic and molecule beams that not only can detect a small flux of molecules, but also responds to the internal energy of the molecules. This is the basis for the optothermal spectroscopy technique which Scoles and others have used to obtain very high signal-to noise and high resolution ro-vibrational spectra.
Richard James Saykally is an American chemist. He is currently the Class of 1932 Endowed Professor of Chemistry at the University of California, Berkeley. He has received numerous awards for his research on the molecular characteristics of water and aqueous solutions.
William A. Klemperer (October 6, 1927 – November 5, 2017) was an American chemist who was one of the most influential chemical physicists and molecular spectroscopists in the second half of the 20th century. Klemperer is most widely known for introducing molecular beam methods into chemical physics research, greatly increasing the understanding of nonbonding interactions between atoms and molecules through development of the microwave spectroscopy of van der Waals molecules formed in supersonic expansions, pioneering astrochemistry, including developing the first gas phase chemical models of cold molecular clouds that predicted an abundance of the molecular HCO+ ion that was later confirmed by radio astronomy.
Martin Gruebele is a German-born American physical chemist and biophysicist who is currently James R. Eiszner Professor of Chemistry, Professor of Physics, Professor of Biophysics and Computational Biology at the University of Illinois Urbana-Champaign, where he is the principal investigator of the Gruebele Group.
Geraldine Lee Richmond is an American chemist and physical chemist who is serving as the Under Secretary of Energy for Science in the US Department of Energy. Richmond was confirmed to her DOE role by the United States Senate on November 5, 2021. Richmond is the Presidential Chair in Science and Professor of Chemistry at the University of Oregon (UO). She conducts fundamental research to understand the chemistry and physics of complex surfaces and interfaces. These understandings are most relevant to energy production, atmospheric chemistry and remediation of the environment. Throughout her career she has worked to increase the number and success of women scientists in the U.S. and in many developing countries in Africa, Asia and South America. Richmond has served as president of the American Association for the Advancement of Science, and she received the 2013 National Medal of Science.
Michael David Fayer is an American chemical physicist. He is the David Mulvane Ehrsam and Edward Curtis Franklin Professor of Chemistry at Stanford University.
Martin Quack is a German physical chemist and spectroscopist; he is a professor at ETH Zürich.
David Wixon Pratt is an American physicist, Professor of Chemistry at the University of Pittsburgh.
Albert Stolow is a Canadian physicist. He is the Canada Research Chair in Molecular Photonics, Full Professor of Chemistry & Biomolecular Sciences and of Physics, and a Member of the Ottawa Institute for Systems Biology at the University of Ottawa. He is the founder and an ongoing member of the Molecular Photonics Group at the National Research Council of Canada. He is adjunct professor of Chemistry and of Physics at Queen's University in Kingston, and a Graduate Faculty Scholar in the Department of Physics, University of Central Florida and a Fellow of the Max-Planck-uOttawa Centre for Extreme and Quantum Photonics. In 2008, he was elected a Fellow in the American Physical Society, nominated by its Division of Chemical Physics in 2008, for contributions to ultrafast laser science as applied to molecular physics, including time-resolved studies of non-adiabatic dynamics in excited molecules, non-perturbative quantum control of molecular dynamics, and dynamics of polyatomic molecules in strong laser fields. In 2008, Stolow won the Keith Laidler Award of the Canadian Society for Chemistry, for a distinguished contribution to the field of physical chemistry, recognizing early career achievement. In 2009, he was elected a Fellow of the Optical Society of America for the application of ultrafast optical techniques to molecular dynamics and control, in particular, studies of molecules in strong laser fields and the development of new methods of optical quantum control. In 2013, he was awarded the Queen Elizabeth II Diamond Jubilee Medal (Canada). In 2017, Stolow was awarded the Earle K. Plyler Prize for Molecular Spectroscopy and Dynamics of the American Physical Society for the development of methods for probing and controlling ultrafast dynamics in polyatomic molecules, including time-resolved photoelectron spectroscopy and imaging, strong field molecular ionization, and dynamic Stark quantum control. In 2018, Stolow was awarded the John C. Polanyi Award of the Canadian Society for Chemistry “for excellence by a scientist carrying out research in Canada in physical, theoretical or computational chemistry or chemical physics”. In 2020, he became Chair of the Division of Chemical Physics of the American Physical Society. His group's research interests include ultrafast molecular dynamics and quantum control, time-resolved photoelectron spectroscopy and imaging, strong field & attosecond physics of polyatomic molecules, and coherent non-linear optical microscopy of live cells/tissues, materials and geological samples. In 2020, Stolow launched a major new high power ultrafast laser facility at the University of Ottawa producing high energy, phase-controlled few-cycle pulses of 2 micron wavelength at 10 kHz repetition rate. These are used for High Harmonic Generation to produce bright ultrafast Soft X-ray pulses for a new Ultrafast Xray Science Laboratory.
Jon Torger Hougen was an American spectroscopist.
Tamar Seideman is the Dow Chemical Company Professor of Chemistry and Professor of Physics at Northwestern University. She specialises in coherence spectroscopies and coherent control in isolated molecules and dissipative media as well as in ultrafast nanoplasmonics, current-driven phenomena in nanoelectronics and mathematical models.
John Philip Simons is a British physical chemist known for his research in photochemistry and photophysics, molecular reaction dynamics and the spectroscopy of biological molecules. He was professor of physical chemistry at the University of Nottingham (1981–93) and Dr. Lee's Professor of Chemistry at the University of Oxford (1993–99).
References
- ↑ "Department of Chemistry and Biochemistry – University of Maryland, College Park MD Amy Mullin - Department of Chemistry and Biochemistry". www.chem.umd.edu.
- ↑ "APS Fellow Archive". www.aps.org.
- ↑ "Chemistry Tree - Amy Mullin". academictree.org.
- ↑ "Department of Chemistry and Biochemistry – University of Maryland, College Park MD Amy Mullin - Department of Chemistry and Biochemistry" . Retrieved 2019-09-17.
