Deep Tech Startups

Siden Beam is a streaming-native platform built for aircraft, integrating content delivery, bandwidth optimization, and passenger engagement analytics into a single architecture for onboard environments. It serves airlines as an alternative to traditional in-flight entertainment or caching solutions.

1 investor

Sidereus Space Dynamics was a space technology research and development company operating in Italy and Europe. It has concluded its R&D program and is now in discussions with industrial partners regarding the potential acquisition of its technology assets, infrastructure, and intellectual property.

1 investor

Skyworks Solutions designs and manufactures semiconductor products, including amplifiers, front-end modules, filters, RF passives, timing/clock devices, isolation components, diodes, and power management ICs. Its chips serve cellular, Wi-Fi, automotive, industrial, and infrastructure applications across 5G, IoT, and connectivity standards.

1 investor

Sigetronics develops semiconductor devices and materials, including APD sensors for LiDAR, bio-medical sensors for wearables, and GaN power FETs and RF HEMTs for 5G, radar, and charging applications. It also operates an M-FAB foundry with a portfolio of IPs serving 5G/6G mobile communications and related electronics markets.

1 investor

Teledyne DALSA designs, develops, and manufactures high-performance digital imaging products and semiconductor products and services, with core competencies in specialized integrated circuits, electronics, software, and semiconductor wafer processing. Established in 1980, it operates internationally as part of Teledyne Technologies.

1 investor

SigmaSense builds a semiconductor and software sensing platform that converts raw signals into high-precision, real-time data for applications including battery health monitoring (Onboard EIS), touch and touchless human interfaces, and industrial systems. It serves markets such as battery and power, automotive, medical, IoT, and consumer devices, and licenses its sensing technology to semiconductor makers like NXP.

1 investor

SignalUp provides AI-powered full-service hardware product development, covering electrical and mechanical engineering, firmware, and manufacturing. It targets inventors and entrepreneurs who have hardware product ideas but little or no in-house engineering team.

1 investor

Signet Therapeutics develops targeted cancer drugs using cancer organoid models combined with artificial intelligence. The company focuses on discovering novel therapies for cancers that currently lack effective treatment options.

1 investor

Silence Laboratories develops privacy-preserving computation technology, with a team drawing on cryptography, academic, and industry expertise. It operates R&D centers and contributors distributed across multiple countries.

1 investor

Si-Lib develops pure silicon anodes for lithium-ion batteries, a materials technology aimed at energy-storage applications. The company originated from research at Tel Aviv University.

1 investor

Silicon Line designs and manufactures semiconductor ICs and optical sub-assemblies for high-speed data transmission in cables and display systems. The company serves device makers and manufacturers across consumer electronics, professional imaging, and automotive applications.

1 investor

Silicon Quantum Computing develops fault-tolerant quantum processors using atomic-scale manufacturing techniques, targeting applications in AI acceleration, quantum simulation, and quantum computing. The company builds a full-stack solution from processor fabrication through control systems and software.

1 investor

Silixa develops distributed fibre optic sensing systems for real-time monitoring in energy, infrastructure, and environmental applications. The company's technologies enable high-density sensor coverage across extended areas for subsea seismic acquisition, microseismic monitoring, and structural sensing to support energy production and carbon storage verification.

1 investor

Siloton develops photonic chip technology that miniaturizes the optical hardware behind OCT (optical coherence tomography) eye scanning onto a coin-sized chip, enabling a portable eye scanner for use in clinics, community settings, and at home. It also offers OCT-Chip Development Kits for other market segments, targeting ophthalmic diagnostics and medical imaging.

1 investor

Silurian develops customized foundation models for simulating the impact of weather on assets and infrastructure. The company serves energy and government sectors.

1 investor

Silvertech is commercialising a patented lateral silicon carbide (SiC) FET transistor technology aimed at improving power MOSFETs used for power conversion in applications like EVs, data centres, grid synchronisation, and inverters. Developed with Griffith University's Microtechnology Centre, the company targets renewable energy and power electronics with devices intended to be cheaper, smaller, and more efficient than existing SiC and GaN options.

1 investor

SILVEX applies a conductive coating to textiles that provides electromagnetic field shielding while maintaining the fabric's original feel and appearance. The dip-and-dry process integrates into existing textile manufacturing workflows for consumer apparel, automotive, aerospace, military, and healthcare applications.

1 investor

Simplex Micro designs RISC-V microprocessor intellectual property, including scalable vector processors that range from 1 to 8-wide architectures. The company serves semiconductor and system-on-chip developers requiring high-performance CPU designs.

1 investor

Simreka provides an AI-driven R&D platform for chemicals, materials, and manufacturing companies, using virtual experimentation and simulation to accelerate product formulation and process discovery. The platform includes a domain-specific language model trained on chemical patents and technical literature, with deployment options for cloud or on-premise environments.

1 investor

Altair leverages high-performance computing and data science to solve complex engineering and scientific challenges for customers across industries. The company was acquired by Siemens, the leading industrial software company.

1 investor

Simudyne builds simulation and agent-based modeling software that combines AI and machine learning to help organizations test decisions and drive growth. The company serves global banks, regulators, and exchanges.

1 investor

Sindri Materials develops a scalable production process for ultra-high-quality monolayer graphene with low contamination and defects. Its initial application is graphene support grids for cryo-electron microscopy used in drug discovery, vaccine development, and disease research, with longer-term aims in electronics, energy storage, and structural materials.

1 investor

Singletto develops Oxafence Active Protection™, a materials-applied antimicrobial technology integrated into protective materials such as masks, using photodynamic approaches to enable active microbial inactivation during use. The company licenses its platform technology to healthcare, operational, and emerging markets where traditional antimicrobial solutions have proven limited.

1 investor

SingulaNet develops and operates content technology services. The company designs platforms and tools for content creators and publishers.

1 investor