Search Results - masoud agah

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Highly Tunable Stationary Phases for Micro Gas Chromatography Using Room Temperature Ionic Liquids
We deposited a number room temperature ionic liquids inside the channels of semi-packed columns and used these columns for gas chromatographic separation of mixtures containing a number of polar and non-polar compounds. We demonstrated that these columns can be used for rapid and highly efficient separation of the components of different mixtures. ...
Published: 3/15/2017   |   Inventor(s): Masoud Agah, Bishnu Regmi
Keywords(s):  
Category(s): Electrical
Micro-machined Sample Injection Unit for Miniaturized Gas Chromatography System
This invention demonstrates a micro-machined sample injection unit which consists of a T-shaped channel operated with a simple setup involving a single 3-way fluidic valve, a micro-pump for sample loading and a carrier gas supply for subsequent analysis of the volatile organic compounds (VOCs). The innovative sample injection technique described he...
Published: 9/30/2015   |   Inventor(s): Muhammad Akbar, Masoud Agah
Keywords(s):  
Category(s): Engineering
Mini Gas Chromatography Systems
A novel Micro GC architecture has been proposed in this work, based on a monolithically integrated microfabricated separation column and thermal conductivity detector (TCD). The architecture also has a method to perform very sharp injections from the micro-preconcentrator, which is compatible with flow sensitive gas detectors like TCD. The proposed...
Published: 9/24/2014   |   Inventor(s): Apoorva Garg, Masoud Agah, Leyla Nazhandali
Keywords(s):  
Category(s): Chemicals, Devices, Environment, Engineering
Micro Extraction and Analysis of Organic Compounds from Aqueous Environmental Samples and Bodily Fluids
This invention describes the extraction of organic compounds from the aqueous sample followed by analysis using a micro gas chromatography (uGC) system. The extraction of organic compounds is performed by micro purge extractor (uPE) chip which is hybridly integrated with micro preconcentrator coated with Tenax TA adsorbent which serves as a trap. T...
Published: 7/3/2014   |   Inventor(s): Muhammad Akbar, Masoud Agah
Keywords(s):  
Category(s): Diagnostic, Devices, Environment
Functionalized Metal Oxides As A Stationary Phase And A Surface Template For Micro Gas Chromatography Separation Columns
This invention describes a new approach for utilizing atomic layer deposited (ALD) metal oxides as a stationary phase for microfabricated gas chromatography columns. After ALD oxide deposition, a chloroalkylsilane is utilized to deactivate the oxide surface to improve peak symmetry and retention times. Semipacked columns (1m-long, 190 um-wide with ...
Published: 2/10/2014   |   Inventor(s): Hamza Shakeel, Masoud Agah
Keywords(s):  
Category(s): Devices, Engineering, Environment
A Miniaturized Helium Photoionization Detector
This is a technique to miniaturize a Helium Photo-ionization Detector using silicon micromachining resulting in a dimension less that 2cm x 1cm x 2mm. This is suitable for universal, sensitive yet non-destructive gas sensing. Unlike its universal counterpart, the Thermal Conductivity Detector, this consumes less power (just 1.4mW) and is more stabl...
Published: 9/26/2013   |   Inventor(s): Shree Narayanan Sreedharan Nair, Masoud Agah
Keywords(s):  
Category(s): Devices, Chemicals, Environment
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