Deep Tech Glossary
The definitive reference for deep tech terminology — spanning humanoid robotics, brain-computer interfaces, quantum computing, small modular reactors, and synthetic biology.
80 terms defined · 5 sectors
Brain-Computer Interfaces
BCI (Brain-Computer Interface)A system that creates a direct communication pathway between the brain and an external device, enabling neural signals to control computers, prosthetics, or other technology.→
Brain ImplantAn electronic device surgically placed on or within the brain to record neural activity, deliver electrical stimulation, or both — the hardware foundation of invasive brain-computer interfaces.→
BrainGateA pioneering multi-institutional clinical research consortium developing implantable brain-computer interface systems to restore communication and mobility for people with paralysis.→
ECoG (Electrocorticography)A semi-invasive neural recording technique that places electrode grids directly on the brain's surface beneath the skull, offering higher signal quality than EEG without penetrating brain tissue.→
EEG (Electroencephalography)A non-invasive method of recording electrical brain activity using electrodes placed on the scalp, widely used in clinical diagnosis and consumer BCI applications.→
Motor CortexThe region of the brain's cerebral cortex responsible for planning, controlling, and executing voluntary movements — the primary target area for movement-restoring brain-computer interfaces.→
Neural DecodingThe computational process of interpreting raw brain signals to extract meaningful information, such as intended movements, speech, or cognitive states.→
Neural DustA concept for ultra-miniature, wireless neural sensors small enough to be distributed throughout the brain, communicating via ultrasound rather than traditional radio waves or wires.→
Neural InterfaceAny device or system that connects to the nervous system to record neural activity, stimulate neurons, or both — encompassing brain implants, spinal interfaces, and peripheral nerve devices.→
Neural LaceAn ultra-flexible, mesh-like electronic structure designed to be injected or implanted into the brain, integrating seamlessly with neural tissue to record and stimulate neurons over long periods.→
NeuroprostheticsDevices that replace or augment nervous system function by interfacing with neural tissue, including cochlear implants, retinal prostheses, and brain-controlled robotic limbs.→
Non-Invasive BCIA brain-computer interface that reads brain signals through the scalp without any surgical implantation, using technologies like EEG, fNIRS, or MEG.→
OptogeneticsA technique that uses genetically encoded light-sensitive proteins to precisely activate or silence specific neurons with pulses of light, enabling unprecedented control over neural circuits.→
Spike SortingThe process of identifying and classifying the electrical action potentials (spikes) of individual neurons from multi-electrode recordings where signals from multiple cells overlap.→
StentrodeAn endovascular brain-computer interface device developed by Synchron that is delivered through blood vessels to record neural signals from inside the brain's venous system without open brain surgery.→
Utah ArrayA silicon-based microelectrode array with a bed-of-nails design that is implanted into the brain cortex to record signals from individual neurons, long used as the standard in invasive BCI research.→
Humanoid Robotics
ActuatorA mechanical or electrical component that converts energy into physical motion, enabling a robot to move its joints and limbs.→
Degrees of FreedomThe number of independent axes along which a robot's joints can move, determining the range and complexity of motions it can perform.→
Dexterous ManipulationThe ability of a robotic hand or gripper to skillfully handle objects with finger-level control, reorienting, rotating, and precisely positioning items much like a human hand.→
End EffectorThe device or tool at the end of a robotic arm that directly interacts with objects and the environment, such as a gripper, hand, or specialized tool.→
Gait CycleThe complete sequence of leg movements from one footstrike to the next that constitutes a single stride in bipedal locomotion.→
Harmonic DriveA compact, high-ratio gear mechanism widely used in robotic joints that provides precise motion control with minimal backlash in a lightweight package.→
Imitation LearningA machine learning approach where a robot learns to perform tasks by observing and reproducing demonstrations from humans or expert controllers.→
Inverse KinematicsThe mathematical process of calculating the joint angles a robot needs to position its end effector at a desired location and orientation in space.→
ProprioceptionA robot's internal sense of its own body position, joint angles, and forces — analogous to the human body's awareness of limb position without visual feedback.→
Sim-to-RealThe transfer of robot behaviors learned in physics simulation to physical hardware, bridging the gap between virtual training and real-world deployment.→
TeleoperationThe remote control of a robot by a human operator, typically using hand controllers, VR headsets, or haptic devices to command the robot's movements in real time.→
Tendon-DrivenA robotic actuation approach where cables or tendons transmit force from remotely located motors to joints, mimicking the way biological tendons connect muscles to bones.→
URDFUnified Robot Description Format — an XML-based file format that defines a robot's physical structure, including links, joints, geometry, and inertial properties.→
VLA (Vision-Language-Action Model)A multimodal AI model that takes in visual observations and language instructions and outputs robot actions, enabling robots to follow natural-language commands in diverse environments.→
Whole-Body ControlA control framework that coordinates all of a humanoid robot's joints simultaneously, balancing competing objectives like locomotion, manipulation, and balance in real time.→
Zero-Shot GeneralizationA robot's ability to perform a task or handle an object it has never encountered during training, without any additional fine-tuning or demonstrations.→
Quantum Computing
DecoherenceThe process by which a qubit loses its quantum properties — superposition and entanglement — due to unwanted interactions with its environment, introducing errors into quantum computations.→
EntanglementA quantum phenomenon where two or more qubits become correlated such that the quantum state of each cannot be described independently, even when separated by large distances.→
Fault-Tolerant Quantum ComputingA quantum computing regime where error correction codes suppress hardware errors to negligible levels, enabling reliable execution of arbitrarily long quantum algorithms.→
NISQ (Noisy Intermediate-Scale Quantum)The current era of quantum computing characterized by processors with tens to hundreds of qubits that are too noisy for full error correction but potentially capable of useful computations on certain problems.→
Photonic Quantum ComputingA quantum computing approach that uses individual photons (particles of light) as qubits, manipulated through optical components like beam splitters, phase shifters, and waveguides.→
Quantum AdvantageThe demonstration that a quantum computer can solve a practically relevant problem faster, cheaper, or more accurately than the best available classical methods.→
Quantum AnnealingA quantum computing approach specialized for optimization problems, where a system of qubits is slowly evolved from a simple initial state toward the lowest-energy solution of a problem.→
Quantum Error CorrectionA set of techniques that protect quantum information from decoherence and gate errors by encoding logical qubits across multiple physical qubits, enabling reliable computation despite noisy hardware.→
Quantum GateA basic operation on qubits that manipulates their quantum state, analogous to logic gates in classical computing — the building blocks from which quantum algorithms are constructed.→
Quantum SupremacyThe milestone at which a quantum computer performs a specific computation that is practically impossible for any classical supercomputer, regardless of whether the task itself is commercially useful.→
Quantum VolumeA holistic benchmark metric for quantum computers that combines qubit count, connectivity, gate fidelity, and circuit depth into a single number expressing overall computational capability.→
QubitThe basic unit of quantum information, analogous to a classical bit but capable of existing in a superposition of both 0 and 1 states simultaneously.→
Superconducting QubitA qubit implemented as a tiny circuit made from superconducting materials, cooled to near absolute zero, where quantum information is stored in the oscillation of electrical current.→
SuperpositionA quantum mechanical principle whereby a qubit exists in a combination of both 0 and 1 states simultaneously until it is measured, at which point it collapses to one definite value.→
Topological QubitA theorized type of qubit that encodes quantum information in the global properties of exotic quantum states, making it inherently resistant to local noise and decoherence.→
Trapped IonA quantum computing approach that uses individual charged atoms suspended in electromagnetic fields as qubits, manipulated by precisely targeted laser beams.→
Small Modular Reactors
Breeding RatioThe ratio of new fissile material created in a nuclear reactor to the fissile material consumed — a breeding ratio greater than 1.0 means the reactor produces more fuel than it burns.→
CriticalityThe state in which a nuclear fission chain reaction is self-sustaining — each fission event produces, on average, exactly one subsequent fission event, maintaining a steady rate of energy production.→
Generation IV ReactorsA set of advanced nuclear reactor designs selected by an international forum for their potential to deliver improvements in safety, sustainability, economics, and proliferation resistance over current reactor technology.→
HALEU (High-Assay Low-Enriched Uranium)Uranium fuel enriched to between 5% and 20% uranium-235, higher than conventional reactor fuel but below the threshold for weapons-grade material — required by many advanced reactor designs.→
Lead-Cooled Fast ReactorAn advanced nuclear reactor that uses liquid lead or lead-bismuth eutectic as its primary coolant and operates with a fast neutron spectrum, enabling efficient fuel utilization and waste reduction.→
Load FollowingThe ability of a power plant to adjust its electrical output in real time to match fluctuating grid demand, an increasingly important capability as variable renewable energy sources grow in the energy mix.→
MicroreactorAn ultra-small nuclear reactor producing 1 to 20 megawatts of power, designed for remote locations, military bases, mining sites, and other off-grid applications where conventional power infrastructure is impractical.→
Molten Salt ReactorA nuclear reactor design that uses molten fluoride or chloride salts as coolant, fuel carrier, or both — enabling operation at high temperatures and low pressures with inherent safety advantages.→
NRC (Nuclear Regulatory Commission)The independent U.S. federal agency responsible for licensing and regulating civilian nuclear power plants, nuclear materials, and radioactive waste to protect public health, safety, and the environment.→
Nuclear Fuel CycleThe complete series of steps involved in producing, using, and managing nuclear fuel — from uranium mining and enrichment through reactor operation to spent fuel storage, reprocessing, or disposal.→
Passive SafetyNuclear reactor safety features that rely on natural physical phenomena — gravity, natural circulation, thermal expansion, and material properties — rather than active mechanical systems or human intervention to prevent accidents.→
Pressurized Water ReactorThe most common type of nuclear reactor worldwide, which uses ordinary water kept under high pressure as both coolant and neutron moderator, preventing it from boiling in the reactor core.→
SMR (Small Modular Reactor)A nuclear reactor with an electrical output typically under 300 megawatts that is designed for factory fabrication and modular deployment, offering faster construction and lower upfront capital costs than conventional large reactors.→
Sodium-Cooled Fast ReactorAn advanced nuclear reactor that uses liquid sodium metal as its primary coolant and operates with a fast neutron spectrum, offering high thermal efficiency and the ability to breed or burn nuclear fuel.→
TRISO (Tri-structural Isotropic Particle Fuel)An advanced nuclear fuel design where tiny uranium kernels are coated with multiple layers of carbon and ceramic, creating extremely robust fuel particles that can withstand very high temperatures without releasing radioactive material.→
Uranium EnrichmentThe industrial process of increasing the proportion of the fissile isotope uranium-235 in a uranium sample, from its natural concentration of 0.7% to levels usable as nuclear reactor fuel or required by advanced reactor designs.→
Synthetic Biology
BioBrickA standardized, interchangeable DNA part with defined flanking sequences that allows it to be easily combined with other BioBricks to build more complex genetic systems — the biological equivalent of modular electronic components.→
BiofoundryA highly automated laboratory facility that accelerates the design-build-test-learn cycle of biological engineering, using robotics, high-throughput screening, and data analytics to rapidly engineer organisms.→
BiosensorA device or engineered organism that detects specific biological or chemical substances by combining a biological recognition element with a signal transduction mechanism to produce a measurable output.→
Cell TherapyA therapeutic approach that uses living cells — often genetically engineered — as the active treatment, either by transplanting cells into a patient or modifying a patient's own cells to fight disease.→
Cell-Free SynthesisA biological production method that uses the molecular machinery of cells — ribosomes, enzymes, and energy molecules — without intact living cells, enabling rapid protein production and prototyping in a test tube.→
Chassis OrganismA well-characterized host organism — typically a bacterium, yeast, or cell line — that serves as the foundational platform into which engineered genetic circuits and metabolic pathways are introduced.→
CRISPRA revolutionary gene-editing technology that uses a programmable molecular system to make precise cuts in DNA at targeted locations, enabling researchers to add, delete, or modify genetic sequences with unprecedented ease and accuracy.→
Directed EvolutionA laboratory method that mimics natural selection to evolve proteins or organisms with desired properties, by creating large libraries of random variants and screening for improved performance over multiple generations.→
DNA SynthesisThe chemical manufacturing of custom DNA sequences from scratch, base by base, enabling researchers to create any desired genetic sequence without needing a natural template.→
Gene CircuitA set of engineered genetic components — promoters, repressors, activators, and other regulatory elements — wired together within a cell to perform a specific logical or computational function.→
Gene DriveA genetic engineering technology that biases the inheritance of a particular gene so it spreads through a population much faster than normal Mendelian inheritance would allow — potentially altering or suppressing entire wild species.→
Metabolic EngineeringThe practice of redesigning an organism's metabolic pathways — the sequences of chemical reactions within cells — to optimize the production of a desired substance or to create entirely new biochemical products.→
Precision FermentationA biotechnology process that uses genetically engineered microorganisms grown in fermentation tanks to produce specific proteins, fats, or other molecules traditionally derived from animals or plants.→
Protein EngineeringThe design and modification of protein molecules to create variants with improved or novel functions, using rational design based on structural knowledge, directed evolution, or increasingly AI-guided approaches.→
Recombinant DNADNA molecules formed by combining genetic material from two or more different sources using molecular cloning techniques — the foundational technology of genetic engineering and modern biotechnology.→
Synthetic BiologyAn interdisciplinary field that applies engineering principles to biology, designing and constructing new biological parts, devices, and systems — or redesigning existing natural biological systems — for useful purposes.→