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- Sandström, Malin, 1980-, et al.
(författare)
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A Bulb Model Implementing Fuzzy Coding of Odor Concentration
- 2009
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Ingår i: Olfaction and Electronic Nose. - : AIP. - 9780735406742 ; , s. 159-162
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Konferensbidrag (refereegranskat)abstract
- It is commonly accepted that the olfactory bulb (OB) codes for odor quality by specific patterns of activated glomeruli. However, no such consensus has been reached for how the OB codes for odor concentration. We have constructed a model of the olfactory bulb which is able to generate a "fuzzy code" for odor concentration, while still coding for odor identity and showing synchronization of active mitral cells. The fuzzy code arises from competitive inhibition in the glomerular layer of the model. Fuzzy concentration coding could explain how the OB might encode odor concentration while still encoding odor quality according to the consensus view above.
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| 4. |
- Sandström, Niklas, et al.
(författare)
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ELECTROHYDRODYNAMIC ENHANCED TRANSPORT AND TRAPPING OF AIRBORNE PARTICLES TO A MICROFLUIDIC AIR-LIQUID INTERFACE
- 2008
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Ingår i: 21st IEEE International Conference on Micro Electro Mechanical Systems (IEEE MEMS 2008). - : IEEE conference proceedings. - 9781424417926 ; , s. 595-598
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Konferensbidrag (refereegranskat)abstract
- We introduce a novel approach for greatly improved transport and trapping of airborne sample to a microfluidic analysis system by integrating an electrohydrodynamic (EHD) air pump with a microfluidic air-liquid interface. In our system, a negative corona discharge partially ionizes the air around a sharp electrode tip while the electrostatic field accelerates airborne particles towards an electrically grounded liquid surface, where they absorb. The air-liquid interface is fixated at the microscale pores of a perforated silicon diaphragm, each pore functioning as a static Laplace valve. Our system was experimentally tested using airborne smoke particles of ammonium chloride and aqueous salt solution as the liquid. We measured that EHD enhanced transport of the particles from the air into the liquid is enhanced over 130 times compared to passive trapping.
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| 5. |
- Sandström, Niklas, 1981-, et al.
(författare)
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Microsystems for Airborne Sample Detection
- 2008
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Ingår i: Mini-symposium on Opto-Microfluidics for Biological Large Scale Integration.
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Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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