| 1. |
- Greek, S, et al.
(författare)
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Mechanical considerations in the design of a micromechanical tuneable InP-based WDM filter
- 1999
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Ingår i: JOURNAL OF MICROELECTROMECHANICAL SYSTEMS. - : IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. - 1057-7157. ; 8:3, s. 328-334
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A FVDM photodetector for fiberoptic communication systems using a wavelengths around 1.55 mu m has earlier been proposed as a tuneable Fabry-Perot interferometer micromachined on InP and integrated with a photodiode, The interferometer consists of a mirro
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| 2. |
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| 3. |
- Hjort, K, et al.
(författare)
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Changes in cell size and DNA content in Sulfolobus cultures during dilution and temperature shift experiments.
- 1999
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Ingår i: Journal of Bacteriology. - : American Society for Microbiology. - 0021-9193 .- 1098-5530. ; 181:18, s. 5669-75
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Tidskriftsartikel (refereegranskat)abstract
- Stationary-phase cultures of different hyperthermophilic species of the archaeal genus Sulfolobus were diluted into fresh growth medium and analyzed by flow cytometry and phase-fluorescence microscopy. After dilution, cellular growth started rapidly but no nucleoid partition, cell division, or chromosome replication took place until the cells had been increasing in size for several hours. Initiation of chromosome replication required that the cells first go through partition and cell division, revealing a strong interdependence between these key cell cycle events. The time points at which nucleoid partition, division, and replication occurred after the dilution were used to estimate the relative lengths of the cell cycle periods. When exponentially growing cultures were diluted into fresh growth medium, there was an unexpected transient inhibition of growth and cell division, showing that the cultures did not maintain balanced growth. Furthermore, when cultures growing at 79 degrees C were shifted to room temperature or to ice-water baths, the cells were found to "freeze" in mid-growth. After a shift back to 79 degrees C, growth, replication, and division rapidly resumed and the mode and kinetics of the resumption differed depending upon the nature and length of the shifts. Dilution of stationary-phase cultures provides a simple protocol for the generation of partially synchronized populations that may be used to study cell cycle-specific events.
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| 4. |
- Hjort, K, et al.
(författare)
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Quartz micromachining by lithographic control of ion track etching
- 1996
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Ingår i: APPLIED PHYSICS LETTERS. - : AMER INST PHYSICS. - 0003-6951. ; 69:22, s. 3435-3436
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- A micromachining process, using ion track etching in combination with lithographic patterning, is presented. The technique employs a substrate pre-irradiated with swift heavy ions and uses a conventional Lithographic technique to control the access of a t
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| 5. |
- Thornell, Greger, et al.
(författare)
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Micromachining by ion track lithography
- 1999
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Ingår i: SENSORS AND ACTUATORS A-PHYSICAL. - : ELSEVIER SCIENCE SA. - 0924-4247. ; 73:1-2, s. 176-183
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Tidskriftsartikel (refereegranskat)abstract
- Micromachining by ion track etching (MITE) based on the lithographic projection of a mask onto an arbitrary ion track recording material using a parallel beam of highly energetic heavy ions, is described here. By this, deep microstructures have been produ
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