Tokyo Metropolitan Komaba High School

Upcycling waste concrete powder into cement-free construction materials through low-dosage micron-sized polyethylene and hot-pressing

Massive quantities of concrete waste and polyethylene (PE) waste are generated annually, yet both remain underutilized. Previous studies showed that carbonation-induced CaCO 3 crystal bridges enhanced interparticle bonding and strength of compacted recycled concrete material, but...

Cryogenic time-division-multiplexed voltage control for scalable trapped-ion quantum processors

Trapped-ion quantum computers based on the quantum charge-coupled device architecture require on the order of ten trap electrodes per qubit, making the number of vacuum feedthroughs a bottleneck at the system scale. Time-division multiplexed (TDM)-based voltage control for trap e...