Google announced its Cardboard VR headset basically as an afterthought at the end of its 2014 I/O conference, but since then the platform's grown into a viable means of experiencing virtual reality. Much like its peers have done in the past, Mountain View is reaching out to academia to submit research proposals that'll hopefully advance the medium. According to the project's Google+ page (naturally) the team's looking for research in areas including immersive audio; optics and displays; computer graphics and rendering and user input technology. Interested? You've got until October 15th to make your submission.