PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

A single thin film perfectly absorbs all electromagnetic waves!

KIMS developed world's first multi-band electromagnetic wave absorption material

A single thin film perfectly absorbs all electromagnetic waves!
2024-10-28
(Press-News.org) The research team of Dr. Byeongjin Park and Dr. Sang Bok Lee from the Composites & Convergence Materials Research Division at the Korea Institute of Materials Science (KIMS), has developed the world's first ultra-thin film composite material capable of absorbing over 99% of electromagnetic waves from various frequency bands (such as 5G/6G, WiFi, and autonomous driving radar) using a single material.

This electromagnetic wave absorption and shielding material is less than 0.5mm thick and is distinguished by its low reflectance of less than 1% and high absorbance of over 99% across three different frequency bands.

Electromagnetic waves emitted by electronic components can cause interference, leading to performance degradation in other nearby electronic devices. Electromagnetic shielding materials are used to prevent this, and absorbing electromagnetic waves is more effective at reducing interference than merely reflecting them. However, conventional electromagnetic shielding materials reflect over 90% of the waves, with an actual absorbance often as low as 10%. Moreover, materials with higher absorbance are typically limited to absorbing electromagnetic waves within a single frequency band.

To overcome these limitations, the research team developed a composite material that can absorb electromagnetic waves across multiple frequency bands simultaneously. This technology absorbs and eliminates electromagnetic waves, resolving secondary interference issues. The material is also thin, flexible, and durable enough to maintain its shape even after being folded and unfolded thousands of times, making it suitable for use in rollable phones and wearable devices.

The team synthesized a magnetic material by altering the crystal structure of ferrite, enabling it to selectively absorb desired frequencies. They produced an ultra-thin polymer composite film and incorporated conductive patterns on the film’s back side to control the propagation of electromagnetic waves. By adjusting the shape of the conductive pattern, electromagnetic wave reflection at specific frequencies can be dramatically reduced. Additionally, a carbon nanotube thin film with high shielding properties was applied to the back to further enhance the material's electromagnetic wave shielding capabilities.

Senior Researcher Byeongjin Park of KIMS, who led the project, commented,“As the applications of 5G/6G communications continue to expand, the importance of electromagnetic wave absorption and shielding materials is growing.” He also added, “This material has the potential to significantly improve the reliability of wireless communication devices such as smartphones and autonomous vehicle radars.”

This research was funded by KIMS’ fundamental research projects and the Electromagnetic Solution Integrated Research Group (SEIF) under the National Research Council of Science & Technology. The findings were published as the cover article in the October 1st edition of the internationally renowned journal Advanced Functional Materials (first author: Dr. Byeongjin Park). The research team has completed domestic patent registration and has also applied for patents in the U.S., China, and other countries. Additionally, the technology has been transferred to several domestic material companies, and it is currently being applied to actual communication devices and automobiles.

 

-----------------------------------------------------------------------

###

About Korea Institute of Materials Science(KIMS)

KIMS is a non-profit government-funded research institute under the Ministry of Science and ICT of the Republic of Korea. As the only institute specializing in comprehensive materials technologies in Korea, KIMS has contributed to Korean industry by carrying out a wide range of activities related to materials science including R&D, inspection, testing&evaluation, and technology support.

END

[Attachments] See images for this press release:
A single thin film perfectly absorbs all electromagnetic waves! A single thin film perfectly absorbs all electromagnetic waves! 2

ELSE PRESS RELEASES FROM THIS DATE:

Teens who made history with Pythagoras’ theorem discovery publish their first academic paper with new proofs

Teens who made history with Pythagoras’ theorem discovery publish their first academic paper with new proofs
2024-10-28
In 2022, U.S. high school students Calcea Johnson and Ne'Kiya Jackson astonished teachers when they discovered a new way to prove Pythagoras’ theorem using trigonometry after entering a competition at their local high school. As a result, both students were awarded keys to the city of New Orleans, and even received personal praise from Michelle Obama. Today they become published authors of a new peer-reviewed paper detailing their discoveries, published in the journal American Mathematical Monthly. Pythagoras’ famous 2,000-year-old ...

More social species live longer, Oxford study finds

2024-10-28
UNDER EMBARGO UNTIL 00:01 GMT MONDAY 28 OCTOBER / 20:01 ET SUNDAY 27 OCTOBER 2024 More social species live longer, Oxford study finds New research published today (28 Oct) from the University of Oxford has revealed that species that are more social live longer and produce offspring for a greater timespan. This is the first study on this topic which spans the animal kingdom, from jellyfish to humans.   What are the benefits and costs of sociality? Social organisms may enjoy benefits such as sharing resources, being better protected from predators, and having support to raise offspring. However, by living in more ...

Magicians don’t mind sharing the secrets behind tricks – if they are their own

Magicians don’t mind sharing the secrets behind tricks – if they are their own
2024-10-27
Magic is one of the oldest forms of entertainment, and much of its enchantment is said to rely on the audience not knowing how the tricks are done. However, while magicians swear to keep their secrets forever when they embark on their profession they are happy to share the tricks of their trade in certain circumstances, a new study shows. Illusionists who took part in major new research thought it was OK to expose their own techniques, but not those invented by others, and also believe it is acceptable to reveal the secrets behind tricks invented by someone who has since died. They didn’t think it was right to share the workings of a magic trick just to gain public ...

No incentive for older birds to make new friends

No incentive for older birds to make new friends
2024-10-27
Like people, birds have fewer friends as they age, but the reasons why are unclear. New research suggests they may just have no drive to. In humans, it’s often been assumed that older people have fewer friends because they’re pickier about who they spend their time with. There’s also the issue that there are fewer people of their own age around. But it’s hard to pick apart the various potential causes for humans, so researchers have turned to animals. The team behind the new research, led by Imperial College London, studied an isolated population of sparrows on the island of Lundy, in the Bristol Channel. By mapping the ...

Development and validation of a new prognostic model for predicting survival outcomes in patients with acute-on-chronic liver failure

2024-10-27
Background and Aims Early determination of prognosis in patients with acute-on-chronic liver failure (ACLF) is crucial for optimizing treatment options and liver allocation. This study aimed to identify risk factors associated with ACLF and to develop new prognostic models that accurately predict patient outcomes. Methods We retrospectively selected 1,952 hospitalized patients diagnosed with ACLF between January 2010 and June 2018. This cohort was used to develop new prognostic scores, which were subsequently validated in external groups. Results The study included 1,386 ACLF patients and identified six independent ...

Identification and validation of the Hsa_circ_0001726/miR-140-3p/KRAS axis in hepatocellular carcinoma based on microarray analyses and experiments

Identification and validation of the Hsa_circ_0001726/miR-140-3p/KRAS axis in hepatocellular carcinoma based on microarray analyses and experiments
2024-10-27
Background and Aims Hepatocellular carcinoma (HCC) is one of the most fatal malignancies. Epigenetic mechanisms have revealed that noncoding RNAs, such as microRNAs (miRNAs) and circular RNAs (circRNAs), are involved in HCC progression. This study aimed to construct a circRNA-miRNA-mRNA network in HCC and validate one axis within the network. Methods HCC-related transcriptome data were obtained from the Gene Expression Omnibus, and HCC-related genes were sourced from GeneCards to identify differentially expressed circRNAs and miRNAs. ...

New study warns that melting Arctic sea-ice could affect global ocean circulation

New study warns that melting Arctic sea-ice could affect global ocean circulation
2024-10-27
“Our finding that enhanced melting of Arctic sea-ice likely resulted in significant cooling in northern Europe in the earth’s past is alarming,” says Mohamed Ezat from the iC3 Polar Research Hub, lead author of the new study. “This reminds us that the planet’s climate is a delicate balance, easily disrupted by changes in temperature and ice cover.”  Ice-free summer conditions are expected to occur in the Arctic Ocean from the year 2050 onwards.  Earlier this ...

Researchers test imlifidase enzyme versus plasma exchange in removing donor-specific antibodies in kidney transplant rejection trial

2024-10-27
San Diego, CA (October 26, 2024) — For kidney transplant recipients experiencing antibody-mediated rejection, the current standard of care involves removing donor-specific antibodies (DSAs) through plasmapheresis (PLEX)—a procedure that removes antibodies from the plasma portion of the blood. Results from a recent clinical trial reveal that an investigational drug called imlifidase, which cleaves and inactivates the type of antibodies that include DSAs, is more effective than PLEX. The research will be presented at ASN Kidney ...

Preclinical studies test novel gene therapy for treating IgA nephropathy

2024-10-26
San Diego, CA (October 26, 2024) — IgA nephropathy is an autoimmune kidney disease, and complement, a component of the innate immune system, plays a role in the condition’s pathogenesis. Investigators have developed and tested a novel gene therapy that enters kidney cells and enables them to block complement activation. The research will be presented at ASN Kidney Week 2024 October 23– 27. The gene therapy, called PS-002, uses a modified virus to treat kidney cells called podocytes. Administration of PS-002 in a mouse model of IgA nephropathy reduced signs of kidney dysfunction, lowered complement ...

Trial assesses antibody therapy for chronic active antibody-mediated kidney transplant rejection

2024-10-26
San Diego, CA (October 26, 2024) — Chronic active antibody-mediated rejection (caAMR) is a common cause of allograft loss after transplantation, with no approved therapies. Clazakizumab, a monoclonal antibody that targets the inflammatory cytokine interleukin-6 (IL-6), stabilized kidney transplant recipients’ kidney function in a phase 2 trial. Investigators now have data from a phase 3 trial with clazakizumab. The findings from the Phase 3 IMAGINE trial, the largest placebo-controlled study in kidney transplant recipients with caAMR, will be ...

LAST 30 PRESS RELEASES:

Mysterious ‘Dark Dwarfs’ may be hiding at the heart of the Milky Way

Real-world data shows teclistamab can benefit many multiple myeloma patients who would have been ineligible for pivotal trial

Scientists reveal how a key inflammatory molecule triggers esophageal muscle contraction

Duration of heat waves accelerating faster than global warming

New mathematical insights into Lagrangian turbulence

Clinical trials reveal promising alternatives to high-toxicity tuberculosis drug

Artificial solar eclipses in space could shed light on Sun

Probing the cosmic Dark Ages from the far side of the Moon

UK hopes to bolster space weather forecasts with Europe's first solar storm monitor

Can one video change a teen's mindset? New study says yes - but there’s a catch

How lakes connect to groundwater critical for resilience to climate change, research finds

Youngest basaltic lunar meteorite fills nearly one billion-year gap in Moon’s volcanic history

Cal Poly Chemistry professor among three U.S. faculty to be honored for contributions to chemistry instruction

Stoichiometric crystal shows promise in quantum memory

Study sheds light on why some prostate tumors are resistant to treatment

Tree pollen reveals 150,000 years of monsoon history—and a warning for Australia’s northern rainfall

Best skin care ingredients revealed in thorough, national review

MicroRNA is awarded an Impact Factor Ranking for 2024

From COVID to cancer, new at-home test spots disease with startling accuracy

Now accepting submissions: Special Collection on Cognitive Aging

Young adult literature is not as young as it used to be

Can ChatGPT actually “see” red? New results of Google-funded study are nuanced

Turning quantum bottlenecks into breakthroughs

Cancer-fighting herpes virus shown to be an effective treatment for some advanced melanoma

Eliminating invasive rats may restore the flow of nutrients across food chain networks in Seychelles

World’s first: Lithuanian scientists’ discovery may transform OLED technology and explosives detection

Rice researchers develop superstrong, eco-friendly materials from bacteria

Itani studying translation potential of secure & efficient software updates in industrial internet of things architectures

Elucidating the source process of the 2021 south sandwich islands tsunami earthquake

Zhu studying use of big data in verification of route choice models

[Press-News.org] A single thin film perfectly absorbs all electromagnetic waves!
KIMS developed world's first multi-band electromagnetic wave absorption material