What is the fine-grained topic of the following text: Recently, Dan Hutcheson, CEO of VLSIresearch, explored this same subject in more depth with Jim Mullin, vice president of Solar Marketing at Applied Materials, in a video interview titled “Innovating out of the Solar Winter with Technology”. Only return the topic.
"Innovating out of the Solar Winter with Technology" video interview by Dan Hutcheson and Jim Mullin.