We present the frequency-dependant (dynamic) dielectric response of a group of topical polycrystalline zeolitic imidazolate-based metal-organic framework (MOF) materials in the extended infrared spectral region. Using synchrotron-based FTIR spectroscopy in specular reflectance, in conjunction with density functional theory (DFT) calculations, we have revealed detailed structure-property trends linking the THz region dielectric response to framework porosity and structural density. The work demonstrates that MOFs are promising candidate materials not only for low-\k{appa} electronics applications but could also be pioneering for terahertz (THz) applications, such as next-generation broadband communications technologies.
A repository & source of cutting edge news about emerging terahertz technology, it's commercialization & innovations in THz devices, quality & process control, medical diagnostics, security, astronomy, communications, applications in graphene, metamaterials, CMOS, compressive sensing, 3d printing, and the Internet of Nanothings. NOTHING POSTED IS INVESTMENT ADVICE! REPOSTED COPYRIGHT IS FOR EDUCATIONAL USE.
Showing posts with label synchronton. Show all posts
Showing posts with label synchronton. Show all posts
Tuesday, February 27, 2018
Abstract-Dielectric Properties of Metal-Organic Frameworks Probed via Synchrotron Infrared Reflectivity
Friday, June 2, 2017
SESAME (Synchrotron light for Experimental Science and Applications in the Middle East) light source officially opens
(Image: SESAME)
By John Wallace
http://www.laserfocusworld.com/articles/2017/05/sesame-synchrotron-light-for-experimental-science-and-applications-in-the-middle-east-light-source-officially-opens.html
The SESAME (Synchrotron light for Experimental Science and Applications in the Middle East) light source, which is based in Allan, Jordan, has been officially opened by Jordan's King Abdullah II. An autonomous intergovernmental organization, SESAME is the first regional laboratory for the Middle East and neighboring regions. The laboratory's official opening will enable research covering fields ranging from medicine and biology, through materials science, physics, and chemistry to health care, the environment, agriculture, and archaeology.
SESAME is a particle-accelerator-based facility that uses electromagnetic radiation emitted by circulating electron beams to study a range of properties of matter. Its initial research program is about to get underway: three beamlines will be operational this year, and a fourth in 2019. Among the subjects likely to be studied in early experiments are pollution in the Jordan River valley with a view to improving public health in the area, as well as studies aimed at identifying new drugs for cancer therapy, and cultural heritage studies ranging from bioarcheology (the study of our ancestors) to investigations of ancient manuscripts.
X-ray and visible to terahertz radiation produced
Spectral regions produced by the various beamlines will include 4.5 to 30 keV x-rays; 0.001 to 3 eV (terahertz to blue visible); 5 to 20 keV x-rays; and 4 to 14 keV x-rays.
Spectral regions produced by the various beamlines will include 4.5 to 30 keV x-rays; 0.001 to 3 eV (terahertz to blue visible); 5 to 20 keV x-rays; and 4 to 14 keV x-rays.
"At the opening ceremony, professor Sir Chris Llewellyn Smith, the President of the SESAME Council, said, "Today sees the fulfillment of many hopes and dreams: the hope that a group of initially inexperienced young people could build SESAME and make it work -- they have -- three weeks ago SESAME reached its full design energy; the hope that, nurtured by SESAME's training program, large numbers of scientists in the region would become interested in using SESAME -- they have -- 55 proposals to use the first two beamlines have already been submitted; and the hope that the diverse members could work together harmoniously. As well as being a day for celebration, the opening is an occasion to look forward to the science that SESAME will produce , using photons provided by what will soon be the world's first accelerator powered solely by renewable energy."
"In building SESAME, we had to overcome major financial, technological, and political challenges, but -- with the help and encouragement of many supporters in Jordan and around the world -- the staff, the directors, and the council did a superb job," said professor Khaled Toukan, the director of SESAME. Toukan notes that both Rolf Heuer, the new president of the council, and Chris Llewellyn Smith, the previous council president, are former directors general of CERN, the European organization for nuclear research, which built and operates the largest and highest-power particle accelerator in the world.
Subscribe to:
Posts (Atom)


