Now showing items 1-7 of 7

    • Endothelial cell sensing, restructuring, and invasion in collagen hydrogel structures 

      Hosseini, Yahya; Agah, Masoud; Verbridge, Scott (The Royal Society of Chemistry, 2015-09-03)
      Experimental tools to model cell-tissue interactions will likely lead to new ways to both understand and treat cancer. While the mechanical properties and regulation of invasion have been recently studied for tumor cells, ...
    • GC-on-chip: integrated column and photoionization detector 

      Akbar, Muhammad; Shakeel, Hamza; Agah, Masoud (The Royal Society of Chemistry, 2015-02-04)
      This paper reports a unique GC-on-chip module comprising a monolithically integrated semi-packed micro separation column (μSC) and a highly sensitive micro helium discharge photoionization detector (μDPID). While semi-packed ...
    • The impact of sphingosine kinase inhibitor-loaded nanoparticles on bioelectrical and biomechanical properties of cancer cells 

      Babahosseini, Hesam; Srinivasaraghavan, Vaishnavi; Zhao, Zongmin; Gillam, Frank; Childress, Elizabeth; Strobl, Jeannine S.; Santos, Webster L.; Zhang, Chenming; Agah, Masoud (The Royal Society of Chemistry, 2015-11-19)
      Cancer progression and physiological changes within the cells are accompanied by alterations in the biophysical properties. Therefore, the cell biophysical properties can serve as promising markers for cancer detection and ...
    • Miniaturized helium photoionization detector 

      Electrical and Computer Engineering; Virginia Tech Intellectual Properties, Inc.; Agah, Masoud; Sreedharan Nair, Shree Narayanan (United States Patent and Trademark Office, 2018-08-14)
      The present invention provides an ionization detector having a base having an enclosed chamber. The enclosed chamber has a first end and a second end. The detector also includes a first outlet which is a source of an ...
    • Off-chip passivated-electrode, insulator-based dielectrophoresis (O pi DEP) 

      Zellner, Phillip; Shake, Tyler; Sahari, Ali; Behkam, Bahareh; Agah, Masoud (Springer Heidelberg, 2013-08-01)
      In this study, we report the first off-chip passivated-electrode, insulator-based dielectrophoresis microchip (OπDEP). This technique combines the sensitivity of electrode-based dielectrophoresis (eDEP) with the high ...
    • A purge and trap integrated microGC platform for chemical identification in aqueous samples 

      Akbar, Muhammad; Narayanan, Shree; Restaino, Michael; Agah, Masoud (The Royal Society of Chemistry, 2014-05-19)
      The majority of current micro-scale gas chromatography (_GC) systems focus on air sampling to detect volatile organic compounds (VOCs). However, purging the VOCs from a water sample using microsystems is an unchartered ...
    • Scalable nanolaminated SERS multiwell cell culture assay 

      Ren, Xiang; Nam, Wonil; Ghassemi, Parham; Strobl, Jeannine S.; Kim, Inyoung; Zhou, Wei; Agah, Masoud (Springer Nature, 2020)
      This paper presents a new cell culture platform enabling label-free surface-enhanced Raman spectroscopy (SERS) analysis of biological samples. The platform integrates a multilayered metal-insulator-metal nanolaminated SERS ...