Summary and evaluation

Table 8 gives a rough overview on nanotechnologically influenced components and systems with space application potential as described in the preceding chapters.

Field of technology

Nanotechnological application

Structure materials

• Nanoparticle reinforced polymers

• CNT/CNT-composites

• Metal matrix composites

• Nanocrystalline metal/alloys

• Nanostructured ceramic(s)...

Energy generation and storage

• III/V semiconductor solar cells

• Thin film solar cells

• Supercapacitors

• Batteries/thin film batteries...

Data processing and storage

• Phase-Change-RAM

• Biological data memories

• Molecular electronics

• Spintronics ...

Data communication (opti-cal/EHF)

• Photonic crystals

• SAW- components ...

Sensor technology/instruments

• Magnetoelectronic sensors

• Scanning probe devices

• X-ray optics/- mirrors...

Life support systems/biomedical applications

• Heat exchanger

• Nanomembranes

• Drug-Delivery-Systems ...

Thermal protection/control

• Ceramic fiber composites

• Thermal protection layers and isolations

• Ferrofluids ...

Table 8: Selection of nanotechnologically influenced components and systems with application potential in space

Table 8: Selection of nanotechnologically influenced components and systems with application potential in space

The spectrum of nanotechnology applications in space reaches from short to medium-term applications up to long-term and visionary deve-

lopments. Significant differences can be determined regarding the economic potential in the terrestrial market, the contribution to space technology goals and the economic benefits for the space sector. Beyond that, numerous obstacles concerning nanotechnological applications in space can be identified. In order to assess the relevance of the nanotechnology applications outlined in chapters 5.2 to 5.7, an evaluation has been accomplished regarding the following criteria:

Criteria for evaluating

• State of development of the technology the space relevance of

• Economic potential in terrestrial markets nanotechnological com-

• Contribution to space technology objectives ponents

• Economical benefit for the space sector

• Potential application obstacles in space

The evaluation was performed in a semiquantitative manner on a three step rating scale from 0 = low to 2 = high. For the assessment of the state of development a more differentiated scaling was used from 0 = theory to Semi-quantitative ^ evalu-5 = space qualification. The individual evaluations for the nano-technology topics are summarized in table I in the appendix. The evaluations are based on the results of the study and reflect the subjective evaluation of the contractor. For a final evaluation of the single topics the unweighted average value of the five evaluation criteria was used. In order to facilitate the comparability and interpretation of the numerical values, the data in table I was indicated in per cent of the maximally possible score, i.e. the maximally possible value of 2,6 corresponds to 100 %. The higher the indicated percentage, the more relevant the respective nanotechnological component is assessed. It should be taken into account that the evaluation is more or less semiquantitative and therefore should be interpreted rather qualitative. In the following the respective evaluation criteria are described explicitly.

ation summarized in table I in the appendix

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