Encapsulated liquid crystals as probes for remote thermometry
| Autor: | J. den Hartog, K. J. Franklin, R. J. Buist, D. P. Spencer, G. A. McRae |
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| Rok vydání: | 1992 |
| Předmět: |
Cancer Research
Phase transition Materials science Thermometers Physiology Isotropy Palmitates Capsules Hyperthermia Induced Benzylidene Compounds Magnetic Resonance Imaging Models Structural Condensed Matter::Soft Condensed Matter Nuclear magnetic resonance Evaluation Studies as Topic Chemical physics Liquid crystal Physiology (medical) Latent heat Humans Thermodynamics Crystallization Anisotropy |
| Zdroj: | International Journal of Hyperthermia. 8:253-262 |
| ISSN: | 1464-5157 0265-6736 |
| DOI: | 10.3109/02656739209021780 |
| Popis: | A temperature probe based on the magnetic resonance properties of an encapsulated liquid crystal has been investigated. Large changes in magnetic resonance signals occur as the liquid crystal undergoes a phase transition from an anisotropic (nematic) state to the isotropic liquid. The low latent heat of such phase transitions allows for rapid phase changes during a hyperthermia treatment. Transition temperatures can be tailored by adding suitable compounds such as analogues of the liquid crystal or various solvents. Encapsulation is required to maintain the integrity of the liquid crystal, particularly for applications in vivo. Results of preliminary studies designed to demonstrate the technical feasibility of the concept are presented. |
| Databáze: | OpenAIRE |
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