Measure the out-of-plane k of suspended thin film

[leehoom]

Hi there,

Does anyone know if there is any method to measure the out-of-plane thermal conductivity of a suspended thin film? As the conventional way of measuring the out-of-plane thermal conductivity is to deposit the thin film on a thick substrate, but we want it suspended.

Thanks in advance.

 

[Bystander]

http://en.wikipedia.org/wiki/Time-domain_thermoreflectance
The article is very vague, and I suspect the method is less than fully developed. In principle, it should work. In practice it might be a "learning experience."

 

[leehoom]

http://en.wikipedia.org/wiki/Time-domain_thermoreflectance
The article is very vague, and I suspect the method is less than fully developed. In principle, it should work. In practice it might be a "learning experience."

Thanks for your reply.

As most of TDTR method used previously was thin film on a substrate, I'm not sure whether it can be applied to suspended film condition. Also, I'm curious if 3 omega method can be applied to suspended thin film structure.