Journal article
Terahertz Spectroscopy
Analytical chemistry (Washington), v 83(12), pp 4342-4368
02 May 2011
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Overview and Scope : THz radiation, with frequencies in the range of 0.1–20 THz, can probe physical phenomena such as low-energy excitations and carrier dynamics in electronic materials, collective vibrational or torsional modes in condensed-phase media, and rotational and vibrational transitions in molecules. In other units, 1 THz is equivalent to 33.3 cm–1 (wavenumbers), or 0.004 eV photon energy, or 300 μm wavelength. The variety of phenomena that can be investigated using terahertz radiation, shown schematically in Figure 1, is of great importance to scientists and engineers. However, until recently, it has been very challenging to access this region of the electromagnetic spectrum, leading to what has often been called the “terahertz gap.” The low frequency end is still beyond what can be generated using electronic circuitry while the high frequency end is below what can be easily accessed optically. Fortunately, developments in THz sources and detectors over the last two decades have provided unprecedented means to probe this spectral region. Research in terahertz science and technology has exploded during this time as new spectroscopy and imaging applications have emerged in areas including solid state physics, biology, pharmaceuticals, and security screening. A Web of Science search using “terahertz or THz” returns less than 20 papers published in 1990, over 350 in 2000, and nearly 1400 in 2010.
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Details
- Title
- Terahertz Spectroscopy
- Creators
- Jason B Baxter - Drexel UniversityGlenn W Guglietta - Drexel University
- Publication Details
- Analytical chemistry (Washington), v 83(12), pp 4342-4368
- Publisher
- American Chemical Society; Washington, DC
- Number of pages
- 27
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Chemical and Biological Engineering
- Web of Science ID
- WOS:000291499800002
- Scopus ID
- 2-s2.0-79959224097
- Other Identifier
- 991020202348704721
UN Sustainable Development Goals (SDGs)
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Chemistry, Analytical