Figures & data
Figure 1. Sketch of a filled carbon nanotube serving as multi-functional container for in vivo applications. A ferromagnet can induce heat in AC magnetic fields and a material with strongly temperature dependent nuclear magnetic resonance (NMR) signal might serve as a thermometer. Additional drug delivery can be envisaged. Exohedral functionalisation to achieve biocompatibility is sketched. Note that single-walled as well as multi-walled CNT can be realised.
![Figure 1. Sketch of a filled carbon nanotube serving as multi-functional container for in vivo applications. A ferromagnet can induce heat in AC magnetic fields and a material with strongly temperature dependent nuclear magnetic resonance (NMR) signal might serve as a thermometer. Additional drug delivery can be envisaged. Exohedral functionalisation to achieve biocompatibility is sketched. Note that single-walled as well as multi-walled CNT can be realised.](/cms/asset/87d964cb-a043-4cbb-857a-1e8445362b55/ihyt_a_315644_f0001_b.gif)
Figure 2. Typical SEM and TEM images of well-aligned iron filled multi-walled carbon nanotubes synthesised by LS-CVD.
![Figure 2. Typical SEM and TEM images of well-aligned iron filled multi-walled carbon nanotubes synthesised by LS-CVD.](/cms/asset/37851a7b-80fd-4c20-a5f4-58ce53868c58/ihyt_a_315644_f0002_b.gif)
Figure 3. Specific absorption rate SARFe of Fe nanowires (∼0.08 g Fe/l) encapsulated in CNT. Measurements have been performed at f = 230 kHz after dispersing the CNT by means of human albumin in PBS (4.2 g/l).
![Figure 3. Specific absorption rate SARFe of Fe nanowires (∼0.08 g Fe/l) encapsulated in CNT. Measurements have been performed at f = 230 kHz after dispersing the CNT by means of human albumin in PBS (4.2 g/l).](/cms/asset/15001c24-d173-4d4f-84af-e97486201bb0/ihyt_a_315644_f0003_b.gif)
Figure 4. Temperature dependencies of 127I, 35Cl and 63Cu nuclear magnetic resonance parameters measured on CuI- and AgCl-filled CNT. (a) Nuclear magnetic resonance frequency. (b) Nuclear spin-lattice relaxation rate. The symbols present the experimental data. Solid lines are the fit (see the text).
![Figure 4. Temperature dependencies of 127I, 35Cl and 63Cu nuclear magnetic resonance parameters measured on CuI- and AgCl-filled CNT. (a) Nuclear magnetic resonance frequency. (b) Nuclear spin-lattice relaxation rate. The symbols present the experimental data. Solid lines are the fit (see the text).](/cms/asset/caed1866-9a15-4c79-aa21-a3e96b4836a5/ihyt_a_315644_f0004_b.gif)
Table I. Temperature sensitivity parameters of several filled CNTs. The table shows the filling material, the respective nucleus as well as temperature dependence of resonance frequency and T1-relaxation time in the temperature range of 300°–320°K.