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You searched on: Topic Area: Medical Devices Sorted by: date

Displaying records 11 to 20 of 28 records.
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11. Dielectrophoretic Trapping of P19 Cells on Indium Tin Oxide based Microelectrode Arrays
Topic: Medical Devices
Published: 11/8/2013
Authors: Aveek Gangopadhyay, Saugandhika Minnikanti, Darwin R Reyes-Hernandez, Mulpuri V. Rao, Nathalia Peixoto
Abstract: A microfabricated device comprised of a microelectrode array (MEA) and a microfluidic channel is presented here for the purpose of trapping cells using positive dielectrophoresis (DEP). Transparent indium tin oxide (ITO) electrodes are patterned in a ...

12. Airbrushed Nanofiber Scaffolds Support Bone Marrow Stromal Cell Differentiation
Topic: Medical Devices
Published: 11/1/2013
Authors: Carl George Simon Jr., Wojtek J Tutak, Sumona Sarkar, Tanya M. Farooque, Jyotsnendu J. Giri, Dongbo Wang, Sheng Lin-Gibson, Joachim Kohn, Durgadas Bolikal
Abstract: Nanofiber scaffolds are effective for tissue engineering since they emulate the fibrous nanostructure of native extracellular matrix (ECM). Although electrospinning has been the most common approach for fabricating nanofiber scaffolds, airbrushi ...

13. Challenges of the Changing Robot Markets
Topic: Medical Devices
Published: 7/19/2013
Authors: Gurvinder Singh Virk, Carol Herman, Roger V Bostelman, Tamas Haidegger
Abstract: Service robots are becoming an integrated part of daily life, entering even the most complex scenarios, yet at a slower pace than previously anticipated. This paper presents an overview of the changing area of robotics and the new challenges being fa ...

Topic: Medical Devices
Published: 10/28/2012
Authors: Conni Hanke, Petra S. Dittrich, Darwin R Reyes-Hernandez
Abstract: A cell co-culture was generated on opposite sides of a permeable polyester membrane (PET) membrane by combining dielectrophoretic (DEP) and electrostatic forces to hold cells against gravity in a multilayer microfluidic device (Figure 1). HepG2 cell ...

15. Fabrication of Microelectrodes on Polyester Membranes for Dielectrophoretic Cell Capture
Topic: Medical Devices
Published: 6/18/2012
Authors: Conni Hanke, Petra S. Dittrich, Darwin R Reyes-Hernandez
Abstract: We present a new system for cell capturing on permeable polyester (PET) membranes using dielectrophoretic forces. For the first time gold microelectrodes were fabricated on PET membranes using conventional photolithographic techniques. Their charac ...

16. Predictive Gold Nanocluster Formation Controlled by Metal-Ligand Complexes
Topic: Medical Devices
Published: 1/9/2012
Authors: John M Pettibone, Jeffrey W Hudgens
Abstract: The formation of ligand-protected transition metal nanoclusters in size-selective syntheses is driven by the inherent properties of the protecting ligands. We have previously reported the selective, monodisperse product formation of phosphine protect ...

17. Morphological Changes Driven by Nanofibrous Scaffolds Induce Marrow Stromal Cell Osteogenesis
Topic: Medical Devices
Published: 10/11/2011
Authors: Carl George Simon Jr., Kaushik Chatterjee, Christopher K. Tison, Girish Kumar, Patrick S Pine, Marc L Salit, Jennifer H McDaniel, Marian F Young
Abstract: Cells are sensitive to tissue scaffold architecture and these cell-material interactions drive cell functions critical in tissue regeneration. Results presented here demonstrate that nanofiber scaffolds force primary human bone marrow stromal cells ...

18. Hybrid Cell Adhesive Material for Instant Dielectrophoretic Cell Trapping and Long Term Cell Function Assessment
Topic: Medical Devices
Published: 8/16/2011
Authors: Darwin R Reyes-Hernandez, Jennifer S. Hong, John T Elliott, Michael Gaitan
Abstract: We present the development and evaluation of an engineered hybrid cell adhesive surface for instant dielectrophoretic trapping and patterning of cells in a microfluidic device. This work demonstrates that a hybrid cell adhesive material (hCAM) prepar ...

19. On-chip CO2 control for microfluidic cell culture
Topic: Medical Devices
Published: 1/1/2011
Authors: Samuel P Forry, Laurie E Locascio
Abstract: Carbon dioxide partial pressure (PCO2) was controlled on-chip by flowing pre-equilibrated aqueous solutions through control channels across the device. Elevated PCO2 (e.g. 0.05 atm) was modulated in neighboring stagnant channels via equilibration th ...

20. International Standards Efforts Towards Safe Accessibility Technology for Persons With Disabilities: Cross-industry Activities
Topic: Medical Devices
Published: 12/31/2010
Author: Roger V Bostelman
Abstract: This paper describes the US and International Standards activities ongoing within the National Institute of Standards and Technology, Intelligent Systems Division (ISD) with regards to accessibility for the disabled. There is a critical role of stan ...

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