Fine Structure Ventures

VEIR is a company focused on innovative electricity transmission solutions using high-temperature superconductors. It has developed a unique passive evaporative cryogenic cooling technology that significantly enhances cooling efficiency, delivering twenty times the cooling power per kilogram of nitrogen flow compared to traditional mechanical methods. By utilizing commercial superconducting tape, VEIR's technology enables power delivery at transmission levels without resistive losses. This advancement allows clients to streamline permitting processes and supports the economical establishment of electric transmission lines across distribution-scale infrastructure.

iPronics develops optical networking hardware and software that enables programmable, software-defined photonics for data-center and AI workloads. The company offers a general-purpose integrated programmable photonic system that allows optical hardware to be configured through software to perform multiple functions. This optical reconfigurability supports applications such as data-center interconnection, artificial intelligence, signal processing, sensing, and quantum information, enabling businesses to apply the same hardware across diverse computational tasks. The technology facilitates seamless AI cluster communication and aims to future-proof data-center infrastructure by providing flexible, high-performance photonic capabilities.

Constructive Bio is a biotechnology company that rewrites genomes to turn living cells into biofactories for sustainable materials and therapeutics. By controlling the genetic sequence, it enables the biosynthesis of enzymes, pharmaceuticals, and biomaterials while exploring chemical space beyond natural biology. The approach includes developing virus-resistant organisms and supporting next-generation bioprocesses and biopharmaceuticals.

Mantle Inc. is an engineering and manufacturing company based in Montreal, Canada, specializing in three-dimensional metal printing technology. Established in 2017, the company develops and operates a platform that enables enterprises to produce high-resolution parts tailored for applications in automotive, aerospace, and consumer product design. Mantle's additive technology, known as TrueShape, allows for the efficient printing of finished parts, significantly reducing the time and cost associated with creating production-grade tools, molds, and dies. By serving tool manufacturers, tool makers, and original equipment manufacturers, Mantle aims to meet the critical demands of various industries through its innovative solutions.

Osmoses is a company focused on decarbonizing gas separations to significantly reduce carbon emissions, aiming to eliminate one gigaton of carbon emissions annually. It operates a clean membrane technology system designed to lower energy consumption and carbon emissions in industrial processes. The company's molecular filters are specifically engineered for exceptional size selectivity, allowing them to purify hydrogen and natural gas effectively while also enabling large-scale carbon capture. By transforming chemical separations, Osmoses helps industrial clients reduce costs and product loss, ultimately generating value and contributing to climate change mitigation efforts.

Caelux is a renewable energy company based in Pasadena, California, founded in 2014. It specializes in developing and manufacturing perovskite-on-glass technology for the terrestrial solar and commercial space industries. This innovative technology is designed to enhance solar device efficiency while minimizing the amount of semiconducting material required, thereby reducing production costs. Caelux's products improve power production and integrate seamlessly into existing photovoltaic module manufacturing processes, allowing users to lower installed costs and boost overall performance.

Debut Biotechnology, Inc. is a biotechnology company based in San Diego, California, established in 2019. It specializes in biomanufacturing solutions for high-value molecules, focusing on the development of specialty enzyme solutions and continuous manufacturing processes. The company offers a range of services, including biomanufacturing cartridges, fermentation, and the immobilization of cells and enzymes. Debut Biotechnology is dedicated to creating novel immobilization techniques for enzymes, achieving high success rates and providing immobilized enzymes for continuous manufacturing systems. Its innovative approach enables the production and modification of small and large molecules, catering primarily to the pharmaceutical and specialty chemical industries. By harnessing natural enzyme technologies, Debut aims to deliver sustainable and cost-effective ingredient solutions to its clients.

VEIR is a company focused on innovative electricity transmission solutions using high-temperature superconductors. It has developed a unique passive evaporative cryogenic cooling technology that significantly enhances cooling efficiency, delivering twenty times the cooling power per kilogram of nitrogen flow compared to traditional mechanical methods. By utilizing commercial superconducting tape, VEIR's technology enables power delivery at transmission levels without resistive losses. This advancement allows clients to streamline permitting processes and supports the economical establishment of electric transmission lines across distribution-scale infrastructure.

Hoxton Farms, based in London, UK, specializes in producing real animal fat without the use of animals. The company employs cell biology and advanced mathematical modeling to cultivate purified animal fat in bioreactors, catering primarily to the meat alternatives industry. This innovative approach enables the creation of cruelty-free fat that can be utilized not only in meat alternatives but also in other sectors such as bakery, confectionery, and cosmetics. By focusing on sustainable and ethical production methods, Hoxton Farms aims to transform the way fat is sourced and used in various products.

Femtosense is a technology company specializing in the development of ultra-energy-efficient neural network models aimed at facilitating large-scale neural network processing at the edge. The company's innovative models leverage nonlinear dynamics and space-time sparsity, drawing inspiration from biological neural networks, to achieve high performance-per-joule on complex processing tasks. This technology enables businesses to implement user interfaces characterized by ultra-low latency and low power consumption, while also ensuring complete user privacy.

Mainspring Energy, Inc. is a technology company based in Menlo Park, California, that specializes in developing linear generator technology for low carbon, dispatchable energy solutions. Founded in 2010 by three Stanford engineers, the company focuses on creating advanced prototypes that convert fuel into electricity through a unique, low-temperature reaction of air and fuel. This innovative approach allows Mainspring to offer generators that provide affordable, reliable electricity while significantly reducing carbon emissions compared to traditional electric grids. The company's mission is to address climate change and enhance energy accessibility, contributing to the development of net-zero carbon energy systems for the future.

Finwave Semiconductor specializes in the development of advanced gallium nitride (GaN) transistors and integrated circuits (ICs) tailored for 5G communications and power conversion applications. The company utilizes a unique 3DGaN technology, specifically its differentiated fin field-effect transistor (FinFET) design, to enhance the performance of high-volume applications such as radio frequency front end (RFFE) systems for mobile devices. This innovative approach allows Finwave to create semiconductor materials with distinct properties, contributing to advancements in electronics and energy management.

Nitricity is an energy company focused on renewable nitrogen fertilizer production with zero carbon emissions. It develops electrified, climate-smart fertilizer products and manufactures nitric acid and ammonia, which can be used separately or combined to produce ammonium nitrate fertilizer. The approach aims to bring products closer to farmers, enable timely application, reduce runoff, and maximize nitrogen delivery on a global scale.

Mainspring Energy, Inc. is a technology company based in Menlo Park, California, that specializes in developing linear generator technology for low carbon, dispatchable energy solutions. Founded in 2010 by three Stanford engineers, the company focuses on creating advanced prototypes that convert fuel into electricity through a unique, low-temperature reaction of air and fuel. This innovative approach allows Mainspring to offer generators that provide affordable, reliable electricity while significantly reducing carbon emissions compared to traditional electric grids. The company's mission is to address climate change and enhance energy accessibility, contributing to the development of net-zero carbon energy systems for the future.

Hito is a fintech company specializing in cryptocurrency solutions, primarily through its innovative hardware and software offerings. The company has developed a wireless hardware device that provides ultra-secure digital asset storage, complemented by an intuitive software wallet app. This user-friendly hardware wallet allows for easy setup and detailed transaction tracking, while also incorporating NFC technology to facilitate interactions with non-fungible tokens (NFTs). By focusing on security and usability, Hito aims to empower users to effectively protect and manage their cryptocurrency assets.

Founded in 2018, Quaise is an innovative energy company based in Cambridge, Massachusetts. It specializes in developing and commercializing advanced millimeter-wave drilling systems to access geothermal energy sources worldwide, overcoming geographical limitations.

Radian Aerospace is innovating the aerospace sector with its next-generation spaceplane, which is the first fully reusable vehicle designed for horizontal takeoff and landing. This single-stage to orbit spacecraft aims to facilitate the transportation of people and light cargo to low Earth orbit as well as various terrestrial locations, operating in a manner similar to conventional aircraft. Radian's vehicles are constructed from advanced materials that can endure extreme conditions and are equipped with propulsion technologies that enhance maneuverability and overall performance. Additionally, they incorporate satellite systems that improve communication capabilities, thereby supporting enhanced missions and operational efficiency within the space industry.

Phytoform Labs Ltd, established in 2017 and headquartered in London, specializes in agricultural biotechnology. The company offers genome editing services to crop breeders worldwide, aiming to accelerate plant breeding from decades to years. By leveraging new gene editing technologies and artificial intelligence, Phytoform helps breeders create diverse, sustainable crops with improved yields, ultimately enhancing the economics of breeding for customers.

Sepion Technologies is an advanced membrane company based in Emeryville, California, founded in 2015. It specializes in the development of highly-tunable nanoscale membranes designed for various industrial applications, particularly in the energy storage sector. The company focuses on manufacturing innovative lithium-metal batteries by integrating nanoscience, polymer chemistry, and cell engineering. Its proprietary composite membrane serves as a cost-effective alternative to traditional ceramic separators used in lithium batteries, allowing for large-area production. This technology enables battery manufacturers to enhance energy density in their products, thereby improving overall performance and efficiency in energy storage solutions.

Hedron is a company focused on developing a modular and scalable network of data relay satellites designed to enhance data connectivity in space. Their satellite network utilizes a hybrid RF-optical communication system to facilitate real-time communication between Earth and low-earth-orbiting satellites. By offering advanced data connectivity solutions, Hedron aims to address critical global challenges such as food and water security, climate change monitoring, and disaster mitigation. The company's imaging satellites generate valuable data that provide insights to optimize the global economy and improve understanding of the planet. Through its innovative approach, Hedron is positioned to create new opportunities for advancements in space technology and data utilization.

Mantle Inc. is an engineering and manufacturing company based in Montreal, Canada, specializing in three-dimensional metal printing technology. Established in 2017, the company develops and operates a platform that enables enterprises to produce high-resolution parts tailored for applications in automotive, aerospace, and consumer product design. Mantle's additive technology, known as TrueShape, allows for the efficient printing of finished parts, significantly reducing the time and cost associated with creating production-grade tools, molds, and dies. By serving tool manufacturers, tool makers, and original equipment manufacturers, Mantle aims to meet the critical demands of various industries through its innovative solutions.

Nitricity is an energy company focused on renewable nitrogen fertilizer production with zero carbon emissions. It develops electrified, climate-smart fertilizer products and manufactures nitric acid and ammonia, which can be used separately or combined to produce ammonium nitrate fertilizer. The approach aims to bring products closer to farmers, enable timely application, reduce runoff, and maximize nitrogen delivery on a global scale.

Debut Biotechnology, Inc. is a biotechnology company based in San Diego, California, established in 2019. It specializes in biomanufacturing solutions for high-value molecules, focusing on the development of specialty enzyme solutions and continuous manufacturing processes. The company offers a range of services, including biomanufacturing cartridges, fermentation, and the immobilization of cells and enzymes. Debut Biotechnology is dedicated to creating novel immobilization techniques for enzymes, achieving high success rates and providing immobilized enzymes for continuous manufacturing systems. Its innovative approach enables the production and modification of small and large molecules, catering primarily to the pharmaceutical and specialty chemical industries. By harnessing natural enzyme technologies, Debut aims to deliver sustainable and cost-effective ingredient solutions to its clients.

Gilmour Space Technologies Pty Ltd is an Australian rocket company founded in 2012 and based in Pimpama, Australia. The company specializes in developing low-cost hybrid rockets specifically designed for the small satellite market. Gilmour Space is focused on creating hybrid launch vehicles that utilize 3D printed fuel, allowing for precise control over the combustion process. This innovation enables the company to offer affordable and reliable launch services for research organizations and clients looking to deploy their satellites into low Earth orbit. Gilmour Space is on track to launch its Eris orbital launch vehicles and G-Sat small satellite platforms in 2024.

Boston Metal, founded in 2012 as a spinout from MIT, is a metallurgy company headquartered in Woburn, MA. It specializes in developing technology to reduce the carbon footprint of steel production through its Molten Oxide Electrolysis (MOE) process. This industrial-scale solution enables efficient, lower-cost, and greener production of various metals and alloys from diverse feedstocks. Boston Metal has significantly scaled its technology and produced substantial quantities of metal since its inception.

Finwave Semiconductor specializes in the development of advanced gallium nitride (GaN) transistors and integrated circuits (ICs) tailored for 5G communications and power conversion applications. The company utilizes a unique 3DGaN technology, specifically its differentiated fin field-effect transistor (FinFET) design, to enhance the performance of high-volume applications such as radio frequency front end (RFFE) systems for mobile devices. This innovative approach allows Finwave to create semiconductor materials with distinct properties, contributing to advancements in electronics and energy management.