website  https://polyplexus.com/
FedBizOpps.Gov URL for BAA HR001118S0058:
https://www.fbo.gov/spg/ODA/DARPA/CMO/HR001118S0058/listing.html
Grants.gov  https://www.grants.gov/web/grants/view-opportunity.html?oppId=315485

From the website  https://polyplexus.com/ 
Polyplexus, an R&D propulsion lab, is a global platform designed to accelerate access to scientific evidence, hypothesis development, research proposal generation and sponsor engagement. Developed for scientific researchers and research sponsors, the platform creates a database of easily accessible cited evidence and disrupts the current research process to facilitate faster idea generation and cross-disciplinary collaboration.

Funding is determined and announced by research sponsors and hosted on the platform in sponsor Incubators. 
With the public launch of Polyplexus, DARPA Defense Sciences Office intends to fund up to 30, one-year seedling efforts on the platform over the next 18 months. These funding opportunities are capped at a maximum of $100,000 each. They will roll out at a pace of approximately two per month in Polyplexus Incubators, beginning in March 2019.

DARPA Incubators will include seedling topics determined by DSO program managers. Researchers should monitor the announcement and evolution of each individual Incubator on the platform to fully understand the topic, opportunity, and requirements. The governing BAA for each seedling will be referenced in the Incubator.  The BAA HR001118S0058-Amendment-01.pdf can be found at these links  https://www.fbo.gov/index?s=opportunity&mode=form&id=3cb17069acba23bb51f...