SirenOpt raises $6.5M to scale PlasmaSens, its AI-powered platform for real-time, non-destructive manufacturing inspection
Sofia Chesnokova
Oct 14 2025
California startup SirenOpt has closed a $6.5 million funding round led by Hitachi Ventures and InMotion Ventures, with existing backers Voyager Ventures and Visionaries Tomorrow also participating.
The fresh capital will drive accelerated development of its PlasmaSens manufacturing intelligence platform, expand engineering and operations teams, and support early deployments across the US, Europe, and Asia.
Alongside the funding, SirenOpt recently secured a $2.4 million grant from the California Energy Commission specifically to advance PlasmaSens for battery electrode manufacturing. The company expects to roll out its first full inline factory deployments in 2026.
Detecting defects and material inconsistencies
Founded by CEO Jared O’Leary and a team with deep expertise in materials science, plasma physics, and machine learning, SirenOpt focuses on solving a persistent challenge in advanced manufacturing: detecting defects and material inconsistencies quickly, non-destructively, and at scale.
PlasmaSens uses cold atmospheric plasma combined with machine learning and predictive analytics to provide multi-layered, real-time inspection and process control. It can be seamlessly integrated into both roll-to-roll and piece-to-piece production lines, giving manufacturers unprecedented insight into material quality.
Sectors targeted include battery electrode production, aerospace, semiconductors, power generation, and automotive manufacturing. With the ability to deliver micron-level resolution and real-time feedback, PlasmaSens aims to increase yield, reduce waste, and speed up product development cycles.
SirenOpt competes with established inspection and metrology players like KLA Corporation, Nanometrics, and Kionix. However, its plasma-based sensing combined with AI-powered analytics enables faster, non-destructive measurements with greater material insight, which sets it apart.
“We’ve been struck by the extraordinary speed of SirenOpt over the past 12 months – validating its solution across new industries, advancing the inline instrument, and attracting blue-chip customer interest in each sector. With a manufacturing-integrated device capable of measuring multiple material characteristics non-destructively, SirenOpt is delivering what many have long considered the holy grail of metrology,” said Jan Marchewski, Investor at Hitachi Ventures.
What’s next?
“Over the last year, we’ve seen tremendous customer interest in our PlasmaSens manufacturing intelligence platform, and we have substantially expanded the platform’s use cases across multiple industries, including batteries, aerospace, power generation, semiconductors and automotive,” said Jared O’Leary, CEO and co-founder of SirenOpt.
He added, “We are ramping up our engineering, product, and commercial teams to fulfil the demand we’ve seen for both our factory and lab-scale products. We will utilise this new investment to drive collaborations with our customers & prospects, to deliver our first in-factory deployments in 2026.”
