Here are some images created using the new nested dielectrics workflow in 6.1. I used the following Arnold features to achieve the microscopic feel.

nested dielectrics, spherical_camera, flakes, dispersion_abbe.

https://leegriggs.com/nested-dielectrics

https://docs.arnoldrenderer.com/display/A5ARP/6.1.0.0

https://docs.arnoldrenderer.com/display/A5ARP/Nested+Dielectrics

https://docs.arnoldrenderer.com/display/A5AFMUG/Transmission#Transmission-DielectricPriority

https://docs.arnoldrenderer.com/display/A5AFMUG/Imagers

More examples here and here.

Another incredible music video by @saadmoosajee.

https://knowledge.autodesk.com/support/3ds-max/troubleshooting/caas/sfdcarticles/sfdcarticles/3ds-Max-How-to-use-the-Autodesk-Material-Library-with-Arnold-renderer.html?fbclid=IwAR2OIGcrqiCxX57SaDSUmJZMEmNoEELf635WlDyKio9t9ucybRkSi2Tr-cI

https://www.borndigital.co.jp/seminar/19864.html

https://www.autodesk.com/autodesk-university/