https://j-pcm.org/index.php/jpcm/gateway/plugin/AnnouncementFeedGatewayPlugin/atom 2021-01-18T06:19:07+00:00 Open Journal Systems <p>A phase change material is a substance which releases/absorbs sufficient energy at phase transition to provide useful heat/cooling. Generally the transition will be from one of the first two fundamental states of matter - solid and liquid - to the other. </p>