Thank you to the exhibitors at the ACS Dallas
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The document is a thank you letter from Anis Rahman, the SCHB Booth Chair, to an exhibitor at the recent ACS exhibition in Dallas. The letter emphasizes that small businesses, like the exhibitor's, can thrive and contribute significantly to the economy despite challenges from larger companies and lack of funding. It also provides some pictures of the exhibitor's booth at the expo and looks forward to their participation in the upcoming expo in San Francisco.
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2011 Elsevier B.V. All rights reserved.Call for abstracts pacifichem 2015 terahertz symposium
http://thz-pacifichem.blogspot.com/
Call for Abstracts
Advances in Terahertz Spectroscopy and Imaging (#413)
THE INTERNATIONAL CHEMICAL CONGRESS OF
PACIFIC BASIN SOCIETIES
Honolulu, Hawaii, USA DECEMBER 15 - 20, 2015
Dear Colleague:
It is our great pleasure to announce a symposium on “Advances in Terahertz Spectroscopy and Imaging” at the Pacifichem 2015 in Hawaii. Please see the link above for details. Contributions are solicited addressing subjects from all walks of terahertz applications. As an emerging area of science and technology, terahertz applications, such as spectroscopy, reflectometry and imaging, have the potential for addressing some of the critical problems of the 21st century. As indicated by increased attendance and number of papers in the past, the proposed symposium will fill a gap in the technical program by attracting the terahertz spectroscopy and related communities from all over the world. While there are other spectroscopic techniques, terahertz technology provides unique information that is not available from the predecessors. Therefore, this symposium solicits papers on the advances of terahertz applications in crucial matters such as: biomedical research, early detection of skin cancer, transdermal drug delivery, biopharmaceuticals, materials for energy, conservation and forensic science, security & screening, geology and minerals, semiconductors and any other relevant areas. This symposium will present an opportunity for the exchange of knowledge in a global forum, including results and discussions of current and breakthrough terahertz techniques and their applications. Papers, including spectroscopic, reflectometry and imaging techniques on the above mentioned areas and other terahertz applications in solving important problems are welcome. Formal abstracts submission will be open from January 1 – April 3, 2015. See this link for details of submission: http://www.pacifichem.org/congress-details/abstracts/
Sincerely yours,
Anis Rahman (USA): a.rahman@arphotonics.net
Choonho Kim (S Korea): chkim1202@gmail.com
Wolfgang Jaeger (Canada): wolfgang.jaeger@ualberta.ca
Sing Kiong Nguang (New Zealand): sk.nguang@auckland.ac.nz
Yacov Shamash (USA): yacovshamash@yahoo.com
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Asmc2014 5.8
1) The document outlines applications of terahertz spectrometry, reflectometry, and sub-surface imaging for semiconductor wafer testing to minimize wafer rejects.
2) Exemplary results are analyzed from scanning a wafer to determine defects. Terahertz reflectometry is also shown to effectively control wafer polishing by precisely monitoring thickness.
3) The technique can also identify different self-assembled monolayer coatings on wafers by analyzing their terahertz absorption spectra signatures.
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Feb. 2014 Newsletter of the Small Chemical Businesses Division of the American Chemical Society
http://acs-schb.org
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sample preparation requirements and its ability to “see” below the surface. Another important property is the ability
to inspect on a layer-by layer basis via a non-contact route, non-destructive route. Terahertz 3D imager designed
at Applied Research and Photonics (Harrisburg, PA) has been used to demonstrate reconstructive imaging with a
resolution of less than a nanometer. Gridding with inverse distance to power equations has been described for 3D
image formation. A continuous wave terahertz source derived from dendrimer dipole excitation has been used for
reflection mode scanning in the three orthogonal directions. Both 2D and 3D images are generated for the analysis
of silver iodide quantum dots’ size parameter. Layer by layer image analysis has been outlined. Graphical analysis
was used for particle size and layer thickness determinations. The demonstrated results of quantum dot particle
size checks well with those determined by TEM micrograph and powder X-ray diffraction analysis. The reported
non-contact measurement system is expected to be useful for characterizing 2D and 3D naomaterials as well as for process development and/or quality inspection at the production line.
Biosensors 2016-7192-final-program
6th International Conference and Exhibition on
Biosensors & Bioelectronics
September 22-23, 2016 Phoenix, USA
Early stage detection of skin cancer via terahertz spectral profiling and 3D ...
Early stage detection of skin cancer via terahertz spectral profiling and 3D ...Applied Research and Photonics, Inc.
Early stage detection of skin cancer via terahertz spectral profiling and 3D imaging. Other skin anomalies and treatment monitoring.Dendrimer dipole excitation a new mechanism for terahertz generation
Dendrimer dipole excitation a new mechanism for terahertz generationApplied Research and Photonics, Inc.
This document describes a new mechanism for terahertz generation using dendrimer dipole excitation (DDE). Dendrimers are doped with chromophores to create multiple distributed dipole moments. When excited by a pump laser, these distributed dipoles radiate across a broadband terahertz frequency range. The document details the design of an electro-optic dendrimer material with a high electro-optic coefficient and second order susceptibility for efficient terahertz generation. It discusses the doping and poling process used to generate the distributed dipoles and align them. Measurement of the electro-optic coefficient and demonstration of terahertz generation from the material is also summarized.J uddinetal 2016_scientific_reports_interactiondyestio2
This document summarizes a study that used terahertz spectroscopy to analyze the interaction between different dyes (natural dyes from pomegranate and blackberry, and an inorganic dye called Ruthenium) and titanium dioxide films. The study found that:
1) The terahertz spectra of the natural dye-sensitized films were similar to each other but distinct from the inorganic dye, with prominent absorption peaks around the same wavelengths.
2) The natural dyes permeated more uniformly through the titanium dioxide layers than the inorganic dye based on kinetic studies of dye penetration.
3) Surface profiling and 3D imaging of the films using terahertz radiation clearly showed defects and flaws on the titanium dioxide film.
Terahertz reflection interferometry for automobile paint layer thickness meas...
Terahertz reflection interferometry for automobile paint layer thickness meas...Applied Research and Photonics, Inc.
Abstract: Non-destructive terahertz reflection interferometry offers many advantages for sub-surface inspection such as interrogation of hidden defects and measurement of layers’ thicknesses. Here, we describe a terahertz reflection interferometry (TRI) technique for non-contact measurement of paint panels where the paint is comprised of different layers of primer, basecoat, topcoat and clearcoat. Terahertz interferograms were generated by reflection from different layers of paints on a metallic substrate. These interferograms’ peak spacing arising from the delay-time response of respective layers, allow one to model the thicknesses of the constituent layers. Interferograms generated at different incident angles show that the interferograms are more pronounced at certain angles than others. This “optimum” angle is also a function of different paint and substrate combinations. An automated angular scanning algorithm helps visualizing the evolution of the interferograms as a function of incident angle and also enables the identification of optimum reflection angle for a given paint-substrate combination. Additionally, scanning at different points on a substrate reveals that there are observable variations from one point to another of the same sample over its entire surface area. This ability may be used as a quality control tool for in-situ inspection in a production line.Dendrimer based terahertz time-domain spectroscopy and applications in molecu...
Dendrimer based terahertz time-domain spectroscopy and applications in molecu...Applied Research and Photonics, Inc.
Electro-optic Dendrimer is used to generate milliwatts of terahertz power by difference frequency
method. A terahertz time-domain spectrometer (THz-TDS) has been designed around this source that
exhibits wide broadband terahertz range, 0.1 to 35 THz. Examples of molecular characterization are discussed
for three common explosives and the vibrational states of Fullerenes. The explosives’ spectra are
unique for each explosive that allow detection and identification of the species. The Fullerenes C60 and
H2@C60 also exhibit distinctively different spectra and absorbance states indicating that the THz-TDS is
suitable for probing increased number of vibrational states expected from molecular vibrations.
2011 Elsevier B.V. All rights reserved.Call for abstracts pacifichem 2015 terahertz symposium
http://thz-pacifichem.blogspot.com/
Call for Abstracts
Advances in Terahertz Spectroscopy and Imaging (#413)
THE INTERNATIONAL CHEMICAL CONGRESS OF
PACIFIC BASIN SOCIETIES
Honolulu, Hawaii, USA DECEMBER 15 - 20, 2015
Dear Colleague:
It is our great pleasure to announce a symposium on “Advances in Terahertz Spectroscopy and Imaging” at the Pacifichem 2015 in Hawaii. Please see the link above for details. Contributions are solicited addressing subjects from all walks of terahertz applications. As an emerging area of science and technology, terahertz applications, such as spectroscopy, reflectometry and imaging, have the potential for addressing some of the critical problems of the 21st century. As indicated by increased attendance and number of papers in the past, the proposed symposium will fill a gap in the technical program by attracting the terahertz spectroscopy and related communities from all over the world. While there are other spectroscopic techniques, terahertz technology provides unique information that is not available from the predecessors. Therefore, this symposium solicits papers on the advances of terahertz applications in crucial matters such as: biomedical research, early detection of skin cancer, transdermal drug delivery, biopharmaceuticals, materials for energy, conservation and forensic science, security & screening, geology and minerals, semiconductors and any other relevant areas. This symposium will present an opportunity for the exchange of knowledge in a global forum, including results and discussions of current and breakthrough terahertz techniques and their applications. Papers, including spectroscopic, reflectometry and imaging techniques on the above mentioned areas and other terahertz applications in solving important problems are welcome. Formal abstracts submission will be open from January 1 – April 3, 2015. See this link for details of submission: http://www.pacifichem.org/congress-details/abstracts/
Sincerely yours,
Anis Rahman (USA): a.rahman@arphotonics.net
Choonho Kim (S Korea): chkim1202@gmail.com
Wolfgang Jaeger (Canada): wolfgang.jaeger@ualberta.ca
Sing Kiong Nguang (New Zealand): sk.nguang@auckland.ac.nz
Yacov Shamash (USA): yacovshamash@yahoo.com
Terahertz non-invasive sub-surface nano-scanner
This document describes a terahertz non-invasive sub-surface nano-scanner and 3D imager. It uses terahertz radiation, which can penetrate non-metallic materials, to perform non-destructive subsurface scanning and 3D imaging. Examples are given of using it to detect coating penetration into paint and reveal periodic patterns in semiconductor wafers without defects. The system performs 3D scans to profile sample layers and reconstruct 3D images. It has potential applications in semiconductor inspection, medical imaging of skin and tissue, and other non-destructive testing of non-metallic layered composites.
Asmc2014 5.8
1) The document outlines applications of terahertz spectrometry, reflectometry, and sub-surface imaging for semiconductor wafer testing to minimize wafer rejects.
2) Exemplary results are analyzed from scanning a wafer to determine defects. Terahertz reflectometry is also shown to effectively control wafer polishing by precisely monitoring thickness.
3) The technique can also identify different self-assembled monolayer coatings on wafers by analyzing their terahertz absorption spectra signatures.
SCHB newsletter 02272014
Feb. 2014 Newsletter of the Small Chemical Businesses Division of the American Chemical Society
http://acs-schb.org
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Thank you to the exhibitors at the ACS Dallas
- 1. Division of Small Chemical Businesses American Chemical Society Dear Exhibitor: Thank you for a very successful ACS exhibition in Dallas. Your presence demonstrated how small businesses can not only survive but also thrive and contribute to our economy on a significant scale. I wanted to emphasize that your enterprise is an example that under the right leadership a small company may be successful despite all the inconvenience of meager funding, lack of investment and challenges from the big companies. Below are a few pictures, not in order, of your booth at the expo. We look forward to seeing you in San Francisco. Sincerely, Anis Rahman SCBH Booth Chair Note: If I have missed your company, that is simply for the lack of time. Please send a picture and I shall update. Boron Specialties www.boron.com
- 2. Rieke Metals, Inc. www.RiekeMetals.com UNITED SCIENCE www.uniscicorp.com
- 3. Earthly Delights delightsearthlydelights.com Chem Lab Trends http://www.chemlabtrends.com/
- 4. eSpin Technologies, inc. www.eSpintechnologies.com Active Spectrum www.activespectrum.com
- 5. Millifluidica LLC Division of Small Chemical Businesses www.acs-schb.org
- 6. Sharon Vercellotti, Rita Boggs and Niteen Vaidya helped at the SCHB booth.