More than a dozen new cryptocurrency-focused exchange-traded funds (ETFs) reportedly could be launched in 2025, if they’re approved by the Securities and Exchange Commission. ETF companies have submitted that many filings with the SEC, Bloomberg reported Thursday (Jan. 2). The proposed products described in the filings include a ProShares ETF that would denominate the SP 500’s return in bitcoin; Strive Asset Management and REX Shares funds that would offer exposure to convertible bonds issued by companies to buy bitcoin; and Volatility Shares inverse and leveraged Solana funds, according to the report

ProShares has submitted an application to launch Bitcoin hedge ETFs tied to the S&P 500, Nasdaq 100, and gold.

From Solar To PhotonicsPerovskites are a new type of material increasingly investigated for its potential in solar energy. Semiconductor crystals could be even more powerful at converting light into electricity than traditional silicon-based solar panels.This is one possible way to improve solar panel technology, which we discussed in “ The Solar Age—A Bright Future To Mankind .” It now appears that perovskites could possibly compete with silicon in another field: computing.As traditional silicon processors become smaller and smaller, the industry is looking for ways to perform computation differently. One such considered method is photonics, where light instead of electricity is the carrier of data for performing the computation. This way, the calculation can be done at the speed of light, reducing the need for as many transistors as in traditional electronic calculation.To do so, the proposed method to build photonics computing systems includes laser-based nanoscale manipulation of silicon and better light-to-sound conversion systems .Most photonic technology has been initially focused on silicon-based solutions, as this is by far the material the best understood by the chip-making industry.Still, it would make sense that perovskites, a material known for its ability to handle light and electricity at the same time, would make a great basis for photonic computing.Shaping Perovskite Crystals At WillThis was the reasoning followed by researchers at the Faculty of Physics at the University of Warsaw in collaboration with other institutions from Poland, Italy, Iceland, and Australia. To pave the way for more progress on perovskite-based photonics, they created a way to “cut” perovskite crystals precisely. They detailed their method in an article titled “ Predesigned perovskite crystal waveguides for room-temperature exciton–polariton condensation and edge lasing ”.The material they used is a type of perovskite called CsPbBr3 (cesium-lead-bromide)