(Press-News.org) The rapid rise in AI applications has placed increasingly heavy demands on our energy infrastructure. All the more reason to find energy-saving solutions for AI hardware. One promising idea is the use of so-called spin waves to process information. A team from the Universities of Münster and Heidelberg (Germany) led by physicist Prof. Rudolf Bratschitsch (Münster) has now developed a new way to produce waveguides in which the spin waves can propagate particularly far. They have thus created the largest spin waveguide network to date. Furthermore, the group succeeded in specifically controlling the properties of the spin wave transmitted in the waveguide. For example, they were able to precisely alter the wavelength and reflection of the spin wave at a certain interface. The study was published in the scientific journal Nature Materials.
The electron spin is a quantum mechanical quantity that is also described as the intrinsic angular momentum. The alignment of many spins in a material determines its magnetic properties. If an alternating current is applied to a magnetic material with an antenna, thereby generating a changing magnetic field, the spins in the material can generate a spin wave.
Spin waves have already been used to create individual components, such as logic gates that process binary input signals into binary output signals, or multiplexers that select one of various input signals. Up until now, however, the components were not connected to form a larger circuit. “The fact that larger networks such as those used in electronics have not yet been realised, is partly due to the strong attenuation of the spin waves in the waveguides that connect the individual switching elements – especially if they are narrower than a micrometre and therefore on the nanoscale,” explains Rudolf Bratschitsch.
The group used the material with the lowest attenuation currently known: yttrium iron garnet (YIG)., The researchers inscribed individual spin-wave waveguides into a 110 nanometre thin film of this magnetic material using a silicon ion beam and produced a large network with 198 nodes. The new method allows complex structures of high quality to be produced flexibly and reproducibly.
The German Research Foundation (DFG) funded the project as part of the Collaborative Research Centre 1459 “Intelligent Matter”.
END
Research team produces low-loss spin waveguide network
New method enables large networks capable of processing the information of tomorrow
2025-07-10
ELSE PRESS RELEASES FROM THIS DATE:
PolyU-led research reveals that sensory and motor inputs help large language models represent complex concepts
2025-07-10
Can one truly understand what “flower” means without smelling a rose, touching a daisy or walking through a field of wildflowers? This question is at the core of a rich debate in philosophy and cognitive science. While embodied cognition theorists argue that physical, sensory experience is essential to concept formation, studies of the rapidly evolving large language models (LLMs)suggest that language alone can build deep, meaningful representations of the world.
By exploring the similarities between LLMs and human representations, researchers at The Hong ...
Premature babies should have early skin-to-skin contact with their mother
2025-07-10
More premature babies who had early skin-to-skin contact with their mother were being breastfed at the time of discharge from hospital and for up to one year afterwards. However, this is far from the only benefit.
A team from St. Olavs Hospital and the Norwegian University of Science and Technology (NTNU) have looked at this issue in a number of articles. They now hope that more hospitals will change their practice so that premature babies are not separated from their mother during the first few hours after birth.
“The first few ...
New research in JNCCN offers reassurance about localized prostate cancer prognosis
2025-07-10
PLYMOUTH MEETING, PA [July 10, 2025] — New research in the July 2025 issue of JNCCN—Journal of the National Comprehensive Cancer Network finds that for people diagnosed with nonmetastatic low-risk prostate cancer later in life, and treated according to NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®), 90% were likely to survive their cancer for their remaining life-expectancy. Of those with nonmetastatic higher-risk cancer and a longer life expectancy, that likelihood was still greater than 65%.
The researchers studied 62,839 people diagnosed with non-metastatic prostate ...
Fluorinated polyimide: High toughness and low dielectric properties pave new path for high-frequency communication materials
2025-07-10
Conventional polyimides (PIs) exhibit excellent thermal stability and mechanical performance, yet their dielectric properties (dielectric constant (Dk) > 3.2, dissipation factor (Df) > 0.005 @ 10 GHz). In previous reports, the introduction of trifluoromethyl reduced the dielectric constant and dissipation factor, but it increased chain rigidity, weakened hydrogen bonds interaction, and reduced free volume, which definitely reduced mechanical performance (such as poor toughness leading to crack risks in advanced packaging). Therefore, it is necessary to design PI materials with high toughness and low dielectric properties to meet ...
Radar-based control of a helical microswimmer in 3-Dimensional space with dynamic obstacles
2025-07-10
Recent advances have yielded significant progress in actuation, navigation, and control of magnetic microrobots. Nevertheless, dynamic obstacle avoidance in 3D environments remains a critical challenge, often relying on computationally intensive path-planning methods that limit real-time performance. "Using a hierarchical radar system to enable high-frequency direction updates minimizes computational load while ensuring collision-free navigation," explained corresponding author Jiangfan Yu, a professor at The Chinese University of Hong Kong, Shenzhen. The radar framework comprises (a) a motion sphere for directional ...
Short-term physical activity reduces metabolic-associated steatohepatitis by promoting the degradation of branched-chain amino acids in skeletal muscle
2025-07-10
Background and Aims
Metabolic-associated steatohepatitis (MASH) is an advanced and progressive liver disease that potentially causes cirrhosis and hepatocellular carcinoma. Exercise is a crucial and effective intervention for ameliorating metabolic dysfunction-associated steatotic liver disease. This study aimed to provide a comprehensive understanding of the underlying mechanisms of MASH, which benefit a broad spectrum of MASH patients, including those who have difficulty engaging in physical activity.
Methods
We established a mouse model of MASH and selectively knocked down ...
A multimodal amphibious robot driven by soft electrohydraulic flippers
2025-07-10
The key component of this robot is the soft electrohydraulic actuator. “Unlike traditional rigid robots, soft robots have better environmental adaptability and safety, and electrohydraulic actuation technology is one of the breakthroughs in the field of soft robots in recent years. It has higher energy efficiency and less noise,” said Fuyi Fang, a researcher at School of Mechanical Engineering, Shanghai Jiao Tong University.
The soft electrohydraulic actuator is a sealed pouch filled with silicone ...
US vacation renters waste $2 billion worth of food annually
2025-07-10
COLUMBUS, Ohio – If you find yourself routinely throwing away groceries and leftovers the night before you check out of an Airbnb, you’re not alone: A new study values the food wasted by U.S. vacation renters at about $2 billion each year.
Based on survey results, researchers estimated that groceries, takeout and restaurant leftovers averaging $12 in value per night of short-term lodging remains uneaten. Though the analysis didn’t pinpoint how much remaining food landed in the trash, that was the most common outcome reported, along with taking food home or leaving it behind.
On average, ...
Automatized vocabulary knowledge in predicting speech fluency
2025-07-10
When learning a second language (L2), many are likely familiar with the challenge of memorizing vocabulary, only to struggle with recalling and using it fluently in speech. Studies have found that speaking fluently in L2 depends not only on knowing what words mean but also on how quickly and automatically you can access and use them appropriately in contexts. This ability to retrieve contextually appropriate word meanings without conscious effort is known as automatized vocabulary knowledge (AVK).
In a new study, a team of researchers led by Mr. Kotaro Takizawa from Waseda University, Japan, along with Prof. Kazuya Saito and Dr. ...
Uncovering the relationship between oral function and lifestyle-related diseases
2025-07-10
The term ‘oral health’ refers to the health of the mouth, teeth, gums, and other related structures, and it is closely linked with our well-being and quality of life. Recently, there has been a lot of interest in understanding how oral health is linked to and influences our overall health. For example, it was found that gum disease may be associated with various diseases such as diabetes and kidney disease. Poor oral health can also affect a person’s diet, which further increases a person’s ...
LAST 30 PRESS RELEASES:
Introducing BioEmu: A generative AI Model that enables high-speed and accurate prediction of protein structural ensembles
Replacing mutated microglia with healthy microglia halts progression of genetic neurological disease in mice and humans
New research shows how tropical plants manage rival insect tenants by giving them separate ‘flats’
Condo-style living helps keep the peace inside these ant plants
Climate change action could dramatically limit rising UK heatwave deaths
Annual heat-related deaths projected to increase significantly due to climate and population change
Researchers discover new way cells protect themselves from damage
Rivers choose their path based on erosion — a discovery that could transform flood planning and restoration
New discovery reveals dopamine operates with surgical precision, not as a broad signal
New AI tool gives a helping hand to x ray diagnosis
New Leicester study reveals hidden heart risks in women with Type 2 Diabetes
Over 400 different types of nerve cell have been grown – far more than ever before
Newly discovered molecule may explain reduced muscle mass in type 2 diabetes
Rheumatoid arthritis and muscle wasting: New review points to overlooked complications
Overcoming intrinsic dispersion locking by misaligned bilayer metagratings
Vaccines work: Cohort data from Denmark show real-world evidence of stable protection against HPV-related cervical cancer
Underwater shaped charge explosions: a comprehensive experimental study on coupling dynamics
Wristband sensor provides all-in-one monitoring for diabetes and cardiovascular care
Unveiling the spatiotemporal landscape of Ganoderma lingzhi: insights into ganoderic acid distribution and biosynthesis
Quality and antibiotic resistance risks in livestock probiotics in China
Genomic study reveals deep roots of human survival and adaptation in Himalayas
Differential obesity trends in Asian and Native Hawaiian or other Pacific Islander US adults
Cumulative anticholinergic exposure and change in gait speed and grip strength in older adults
Study suggests lemurs age differently than humans
Hypothermia alters glucose metabolism and may reveal mechanisms of metabolic disease
Content or form? The two possible paths of our memories
Research team produces low-loss spin waveguide network
PolyU-led research reveals that sensory and motor inputs help large language models represent complex concepts
Premature babies should have early skin-to-skin contact with their mother
New research in JNCCN offers reassurance about localized prostate cancer prognosis
[Press-News.org] Research team produces low-loss spin waveguide networkNew method enables large networks capable of processing the information of tomorrow