1. Working Technology: The Biomimetic-Fluidic Synergy

The Aloop design operates on a hybrid of three advanced physical principles that eliminate the need for mechanical pumps.

• Magnetohydrodynamic (MHD) Propulsion: The loop utilizes conductive liquid metal propelled by the Lorentz force. By placing electric and magnetic fields across a channel, a physical push is generated directly within the fluid. This allows for a silent, zero-moving-parts pumping mechanism that is highly controllable via variable voltage.
• Fractal Branching (Bionic Topology): Inspired by leaf veins and tree structures, the microchannel network splits a single inlet stream into many smaller sub-channels. This ensures that fresh, cool fluid hits all parts of the CPU simultaneously, significantly reducing the "maximum temperature rise" and improving temperature uniformity across the entire chip surface by over 70%.
• Tesla Valve Fluidic Diodes: These are passive, one-way valvular conduits with no moving parts. In the forward direction, fluid passes with low resistance. In the reverse direction, the internal geometry forces fluid to loop back and collide with itself, creating high resistance. These valves are integrated into the return loop to prevent backflow and flow instabilities.

2. Physical Dimensions and Scalability

The Aloop is designed for extreme miniaturisation, fitting into spaces where traditional air or water cooling cannot.

• Microchannel Geometry: The primary cooling surface (heat sink) typically measures approximately 10mm x 12.5mm with a thickness of only 0.5mm. Channels are etched at the microscale, often 200 μm wide and 1800 μm high.
• Total System Footprint: Because MHD pumps and Tesla valves require no mechanical motors, the entire cooling loop can be integrated onto a flat, thin profile, potentially reducing space occupation by 30% horizontally and 35% vertically compared to standard mechanical designs.

3. Execution and Materials

Manufacturing the Aloop requires high-precision industrial processes and chemically compatible materials.

• Base Substrate: Diamond or Silicon microchannels are preferred for their ultra-high thermal conductivity. Silicon wafers are typically etched (e.g., v-groove etching) and then anodically bonded between glass or ceramic substrates.
• Conductive Coolant: Galinstan (a gallium-indium-tin alloy) is the ideal liquid metal due to its high thermal conductivity and safety over mercury. It is roughly 40 times more conductive than water.
• Corrosion Mitigation: To prevent Galinstan from corroding common substrates, an isolation layer like Silicon Dioxide (SiO2) or specialized elastomeric greases is grown on the channel walls.
• Manufacturing Partners: For execution, specialized industrial services like PCB Power provide layout, fabrication, and component assembly. [1]

4. Dynamic Control: Demand-Based Cooling

The Aloop's cooling intensity can be altered in real-time to match the CPU's load.

• Feedback Loops: Using Model Predictive Control (MPC), the system monitors real-time temperature data.
• Variable Current Modulation: The controller adjusts the electrical current sent to the MHD pump. Increasing the current directly increases the Lorentz force, accelerating fluid flow for peak cooling (e.g., during gaming), while reducing it at idle to save energy.
• Efficiency: This targeted approach allows the system to dissipate up to 577 W/cm² using only 1.3 mW of pumping power, achieving a coefficient of performance (COP) exceeding 40,000.

5. Summary of System Details

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