Nantero, a US-based developer of carbon nanotubes for the development of semiconductor devices, has raised more than $10m in its series D round from a consortium including two undisclosed corporate venturing units as lead investors.

Its regulatory filing said it had raised $10.6m of a planned $17.6m round and the company said its D series was “oversubscribed”. Nantero’s outside directors include former IBM senior vice-president Orest Bilous and Margaret Seif, general counsel at chip maker Analog Devices.

The syndicate…

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