"knowledge frontier" is correct and usable in written English.
You can use it when referring to a limit of knowledge, or to something that is new and unexplored. For example, "Artificial intelligence is the latest knowledge frontier."
As the stock of human knowledge increases, the time needed to move oneself to the knowledge frontier grows.
This review highlights the research areas where the knowledge frontier has advanced significantly like: temperature-sensitive demand estimation, plant-level effects of cooling water/ambient air temperature increase; supply vulnerabilities due to decreased water availability for power generation; localized impact of climate variations on wind resources etc.
BICEP2 has pushed our knowledge frontier back 38 orders of magnitude in time in a single giant leap, from the creation of Helium seconds after our Big Bang to inflation during the first few trillionths of a trillionth of a quadrillionth of that first second.
It has something of Herzog's Aguirre or Coppola's Apocalypse Now, a drama about the west's obsession with the dark interior and with the money to be made for adventurers who are unafraid of the danger, and the equally intoxicating promise of new knowledge frontiers.
Rapid scientific advances are opening up new knowledge frontiers and growth opportunities in the biomedical sciences industry.
We are exploring knowledge frontiers… And for really arriving to knowledge frontiers one main interdisciplinary cross-point is where genetics meets biology & digital, applied to architecture in our case (and also applied to art, civil engineering, design).
With NTAI, new knowledge frontiers have been given birth to, expected to radically explode to benefit members of the industrial accident community.
Understanding emerging megatrends and trends has always been a vital issue for industries, for value networks and for the clusters of various industry branches, because big and rapid scientific and technological advances in continuous growth fields have been generated by a clear dynamism within the global competitiveness and by searching for new knowledge frontiers [1].
Among many champions of the open (and free) society, Jaron Lanier, author of You Are Not a Gadget and Who Owns the Future?, celebrated the idea of knowledge without frontiers from the comfortable security of a university post.
It should also have strong ties with the professional enterprises, the universities, in accumulating frontier knowledge, not only in pedagogy but all the various developing spheres of modern knowledge.
In her own discipline, for instance, the debates happening on the site Sociologica.mulino.it "are defined as being frontier knowledge even though they are not peer reviewed".
