| Autor: |
Chawner JMA; Department of Physics, Lancaster University, Lancaster, LA1 4YB, United Kingdom., Jones AT; Department of Physics, Lancaster University, Lancaster, LA1 4YB, United Kingdom., Noble MT; Department of Physics, Lancaster University, Lancaster, LA1 4YB, United Kingdom., Pickett GR; Department of Physics, Lancaster University, Lancaster, LA1 4YB, United Kingdom., Tsepelin V; Department of Physics, Lancaster University, Lancaster, LA1 4YB, United Kingdom., Zmeev DE; Department of Physics, Lancaster University, Lancaster, LA1 4YB, United Kingdom. d.zmeev@lancaster.ac.uk. |
| Abstrakt: |
We report measurements of the thermal conductance of a structure made from commercial Acrylonitrile Butadiene Styrene (ABS) modules, known as LEGO® blocks, in the temperature range from 70 mK to 1.8 K. A power law for the sample's thermal conductivity κ = (8.7 ± 0.3) × 10 -5 T 1.75±0.02 WK -1 m -1 was determined. We conclude that this ABS/void compound material provides better thermal isolation than well-known bulk insulator materials in the explored temperature range, whilst maintaining solid support. LEGO blocks represent a cheap and superlative alternative to materials such as Macor or Vespel. In our setup, <400 nW of power can heat an experimental area of 5 cm 2 to over 1 K, without any significant change to the base temperature of the dilution refrigerator. This work suggests that custom-built modular materials with even better thermal performance could be readily and cheaply produced by 3D printing. |
