A giant mechanical installation is being described as a “photovoltaic garden” that is capable of generating massive quantities of renewable energy.
Category: energy
Several key moments in Earth’s history help us humans answer the question “How did we get here?” These moments also shed light on the question “Where are we going?” and offer scientists deeper insight into how organisms adapt to physical and chemical changes in their environment.
Among them is an extended evolutionary occurrence over 2 billion years ago, known as the Great Oxidation Event (GOE). This marked the first time that oxygen produced by photosynthesis—essential for the survival of humans and many other life forms—began to accumulate in significant amounts in the atmosphere.
If you traveled back in time to before the GOE (more than 2.4 billion years ago), you would encounter a largely anoxic (oxygen-free) environment. The organisms that thrived then were anaerobic, meaning they didn’t require oxygen and relied on processes like fermentation to generate energy. Some of these organisms still exist today in extreme environments such as acidic hot springs and hydrothermal vents.
The natural protein, known as CelOCE, was developed at the Brazilian Center for Research in Energy and Materials and is ready for immediate integration into industrial processes. Breaking down plant material into usable fuel has long been one of science’s biggest energy challenges. At the heart o
A research team led by physicists Ming Yi and Emilia Morosan from Rice University has developed a new material with unique electronic properties that could enable more powerful and energy-efficient electronic devices.
The material, known as a Kramers nodal line metal, was produced by introducing a small amount of indium into a layered compound based on tantalum and sulfur. The addition of indium changes the symmetry of the crystal structure, and the result promotes the novel physical properties associated with the Kramers nodal line behavior. The research, published in Nature Communications, represents a step toward low-energy-loss electronics and paves the way for more sustainable technologies.
“Our work provides a clear path for discovering and designing new quantum materials with desirable properties for future electronics,” said Yi, associate professor of physics and astronomy.
An SMU-led research team has developed a more cost-effective, energy-efficient material called high-entropy oxide (HEO) nanoribbons that can resist heat, corrosion and other harsh conditions better than current materials.
These HEO nanoribbons— featured in the journal Science —can be especially useful in fields like aerospace, energy, and electronics, where materials need to perform well in extreme conditions.
And unlike high entropy materials that have been created in the past, the nanoribbons that SMU’s Amin Salehi-Khojin and his team developed can be 3D-printed or spray-coated at room temperature for manufacturing components or coating surfaces. This makes them more energy-efficient and cost-effective than traditional high-entropy materials, which typically exist as bulk structures and require high-temperature casting.
Fuel cells that run on hydrogen are efficient and emit water vapor instead of exhaust. But so far, the technology is still expensive and therefore not competitive with the electric motor alternative.
Norwegian researchers have now figured out how they can accelerate competitiveness by reducing two critical components. This could make fuel cells both cheaper and more environmentally friendly.
The technology has great potential to cut greenhouse gas emissions in the transportation sectors, especially in heavy transport, the maritime sector and—in a somewhat longer timeframe—also in aviation.
A dual resonance vibration electromagnetic energy harvester (EMEH) is proposed in this paper to extend frequency range. Compared with the conventional dual resonance harvester, the proposed system realizes an enhanced “band-pass” harvesting characteristic by increasing the relative displacement between magnet and coil among two resonance frequencies with a significant improvement in the average harvested power. Furthermore, two resonant frequencies are decoupled in the proposed system, which leads to a more straightforward design. The proposed dual resonance EMEH is constructed with a tubular dual spring-mass structure. It is designed with a serpentine planar spring and the coil position is optimized for higher power density with an overall size of 53.9 cm3 for the dual resonance EMEH. It realizes an output power of 11 mW at the first resonant frequency of 58 Hz, 14.9 mW at the second resonant frequency of 74.5 Hz, and 0.52 mW at 65 Hz, which is in the middle of the two resonance frequencies. The frequency range of output power above 0.5 mW is from 55.8 Hz to 79.1 Hz. The maximum normalized power density (NPD) reaches up to 2.77 mW/(cm3·g2). Compared with a single resonance harvester design under the same topology and outer dimension at a resonant frequency of 74.5 Hz, the frequency range in the proposed EMEH achieves more than a 2× times extension. The proposed dual resonance EMEH also has more than 2 times wider frequency range than other state-of-art wideband EMEHs. Therefore, the proposed dual resonance EMEH is demonstrated in this paper for a high maximum NPD and higher NPD over a wide frequency range.
A digital twin helped operators of a Dutch battery energy storage system detect a hidden 4 percent degradation.
A groundbreaking fuel cell could be the key to unlocking electric planes, according to a new study.
The researchers suggest that these devices could hold three times as much energy per kg compared to today’s top-performing EV batteries, providing a lightweight solution for powering not just planes, but lorries and ships too.
Ultrasound is more tissue-friendly and less absorbed by the body, making it a reliable option for powering implantable and skin-adherent devices. As a result, ultrasonic energy is emerging as a next-generation solution for wireless charging.
A flexible, biocompatible solution
A research team led by Dr. Sunghoon Hur from the Electronic and Hybrid Materials Research Center at the Korea Institute of Science and Technology (KIST), along with Professor Hyun-Cheol Song of Korea University, has developed a biocompatible ultrasonic receiver that maintains consistent performance even when bent.