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

Limiting incident NA for efficient wavefront shaping through thin anisotropic scattering media

Limiting incident NA for efficient wavefront shaping through thin anisotropic scattering media
2021-07-14
(Press-News.org) A team of researchers, affiliated with UNIST has succeeded in developing a new optical microscope technology, capable of deeper imaging beyond the biological tissues. This breakthrough has been led by Professor Jung-Hoon Park and his research team in the Department of Biomedical Engineering at UNIST.

Optical imaging technology has emerged as an essential research tool for biomedical studies due to its high resolution and good tomography capability. However, the limited penetration depth of the optical microscope makes it difficult to observe biological tissues of more than 100 μm thickness. This is because strong light scattering, caused by various components of biological tissues, notably lipids and proteins, makes the subject out of focus, which then causes image blurring.

In this study, the research team showed that for wavefront shaping in thin anisotropic scattering media, such as biological tissues, they can optimize the wavefront shaping quality by simply limiting the numerical aperture (NA) of the incident wavefront.

In addition, using the same number of controlled modes, and therefore the same wavefront measurement time, the research team demonstrated that the wavefront shaped focus peak to background ratio can be increased by a factor of 2.1 while the energy delivery throughput can be increased by a factor of 8.9 through 710 μm thick brain tissue by just limiting the incident NA.

The research team anticipates that the new approach can open new avenues in a variety of biomedical applications where energy delivery enhancement or high-resolution imaging/photostimulation is required in a limited decorrelation time window or in light-starved environments.

INFORMATION:

Their findings have been published in the April 2021 edition of Optica, an open-access journal that focuses on the rapid dissemination of high-impact results in all areas of optics and photonics. This study has been jointly carried out by Byungjae Hwang and Sangwon Lee in the Department of Biomedical Engineering at UNIST. It has also been carried out with the support of the National Research Foundation of Korea (NRF) and the TJ Park Foundation.

Journal Reference Hyungwon Jin, Byungjae Hwang, Sangwon Lee, and Jung-Hoon Park, "Limiting the incident NA for efficient wavefront shaping through thin anisotropic scattering media," Optica, (2021).


[Attachments] See images for this press release:
Limiting incident NA for efficient wavefront shaping through thin anisotropic scattering media

ELSE PRESS RELEASES FROM THIS DATE:

Encrypting photos on the cloud to keep them private

2021-07-14
New York, NY--July 13, 2021--The past decade has witnessed scandal after scandal over private images maliciously or accidentally made public. A new study from computer scientists at Columbia Engineering reveals what may be the first way to encrypt personal images on popular cloud photo services, such as those from Google, Apple, Flickr and others, all without requiring any changes to -- or trust in -- those services. Smartphones now make it easy for virtually everyone to snap photos, with market research firm InfoTrends estimating that people now take more than a trillion photos each year. The limited ...

Banishing bandits: Other countries bear the cost

Banishing bandits: Other countries bear the cost
2021-07-14
A new study reveals the strategies that stop bandits from illegally fishing in Australian waters--but warns there is a cost to the region's poorer countries. Co-author Dr Brock Bergseth, from the ARC Centre of Excellence for Coral Reef Studies at James Cook University, said poachers are simply following the recurring history of human fishing: intensively fish and devastate local resources, then move further afield to--in these cases--fish illegally or poach in other countries' waters. "Millions of people rely on fish and seafood and when offered no alternative choice, will chose banditry and illegal fishing ...

Cocoa bean DNA testing offers path to end slavery and child labour in chocolate industry

2021-07-14
A new method of DNA testing on cocoa beans could revolutionise the chocolate industry, offering consumers greater reassurance about the origins and ethics of their beloved confectionery, and giving the global cocoa industry a precision tool to help end slavery and child labour. Researchers from the University of Bath, University of the West of England, and Surrey Business School have proven a low-cost method which compares DNA in chocolate products to the cocoa when it is farmed. This means cocoa can be reliably traced back from an individual chocolate bar to the specific farms which cultivated the cocoa in it, a major advance on current fairtrading, certification and sustainability practices. "This has the potential to ...

Genome studies: More is not always better

Genome studies: More is not always better
2021-07-14
What the fruit fly is to zoologists, the thale cress is to botanists. The widespread herb with the botanical name Arabidopsis thaliana serves them as a model organism from which knowledge can be gained for other plants. It is therefore extremely well researched - also genetically. For example, it is now known that the genetic material of Arabidopsis thaliana (its genome) comprises around 125 million base pairs. It's like having a Lego manual in front of you that is 125 million letters long and contains everything you need to know to build an Arabidopsis plant. Similar to humans, different Arabidopsis specimens are generally not genetically identical. If you were to compare the construction manual of all plants of this species, you would encounter differences in about 10 million places, ...

A star in a distant galaxy blew up in a powerful explosion, solving an astronomical mystery

A star in a distant galaxy blew up in a powerful explosion, solving an astronomical mystery
2021-07-14
Dr. Iair Arcavi, a Tel Aviv University researcher at the Raymond and Beverly Sackler Faculty of Exact Sciences, participated in a study that discovered a new type of stellar explosion - an electron-capture supernova. While they have been theorized for 40 years, real-world examples have been elusive. Such supernovas arise from the explosions of stars 8-9 times the mass of the sun. The discovery also sheds new light on the thousand-year mystery of the supernova from A.D. 1054 that was seen by ancient astronomers, before eventually becoming the Crab Nebula, that we know today. A supernova is the explosion of a star following a ...

How corporate managers try to fix workplace injustices by giving employees secret perks

2021-07-14
A new study co-authored by the UBC Sauder School of Business has found that when senior managers mistreat workers, middle managers often attempt to quietly smooth things over. Robin Hood was known for stealing from the rich and giving to the poor -- but while he may have lived in Sherwood Forest centuries ago, he would have fit right in as a middle manager in today's business world. Studies have shown that when employees are mistreated by senior leaders, employees can often get back at them by doing things like gossiping, stealing office supplies or calling in sick when they're well. But according to new research from UBC Sauder, middle managers also get in on the act, and attempt to address workplace injustices by secretly helping out their subordinates ...

LETI's research will help apply magnetotactic bacteria in oncology

LETIs research will help apply magnetotactic bacteria in oncology
2021-07-14
Kamil Gareev, Associate Professor at ETU "LETI," justified the prospects of using magnetotactic bacteria to treat malignant tumors. LETI researchers identified the main properties of magnetotactic bacteria and described the possibilities of their application in medicine. The results obtained will help create theranostic agents in neurooncology and cardioprotection. The results of the joint study with colleagues from St. Petersburg State University, RAS Institute of Cytology, and RAS Institute of Biotechnology were published as an overview article in the journal Magnetochemistry. Magnetotactic bacteria (MTB) are distinguished by their ability to synthesize magnetosomes, special cellular organelles in which magnetite biomineralization occurs. Thanks ...

'Greta Thunberg Effect' belies challenges for autistic community in going green

2021-07-14
Autistic people need extra help in going green say researchers behind a new study which argues for a more inclusive environmental agenda. Climate action movements are gathering extraordinary pace due to international campaigners like Greta Thunberg, whose autism has been well documented. Being autistic has been used to explain and celebrate, but also diminish and denigrate, her activism. Thunberg, for example, reports that being autistic is a psychological "gift" and "superpower" that underpins her environmental attitudes and behaviours. This has fuelled speculation - in the media and the general public - that autistic ...

Methamphetamine use drove surge in heart failure hospitalizations, costs in California

2021-07-14
DALLAS, July 14, 2021 -- Heart failure hospitalizations and costs related to methamphetamine use jumped sharply over a decade in California, according to new research published today in Circulation: Cardiovascular Quality and Outcomes, an American Heart Association journal. "Our study results should bring urgent attention to this insidious yet rapidly growing form of severe heart failure - methamphetamine-related heart failure, which is taking the lives of young people, straining health care resources and threatening to spread like wildfire in California, the West and to the rest of the nation," ...

Like priming a pump, cells damaged by chronic lung disease can result in severe COVID

2021-07-14
PHOENIX, Ariz. -- July 14, 2021 -- The results of a study by an international scientific team co-led by the Translational Genomics Research Institute (TGen), an affiliate of City of Hope, suggest that -- like pouring water atop a wellhead before pumping -- the airway cells of patients with chronic lung diseases are "primed" for infection by the COVID-19 virus, resulting in more severe symptoms, poorer outcomes and a greater likelihood of death. The study -- published today in Nature Communications -- details the genetic changes caused by chronic lung disease in the molecular makeup of a variety of cells, including the epithelial cells that line the lung and airways. The ...

LAST 30 PRESS RELEASES:

Modesty and boastfulness – perception depends on usual performance

Do sweeteners increase your appetite? New evidence from randomised controlled trial says no 

Women with obesity do not need to gain weight during pregnancy, new study suggests

Individuals with multiple sclerosis face substantially greater risk of hospitalisation and death from COVID-19, despite high rates of vaccination

Study shows obesity in childhood associated with a more than doubling of risk of developing multiple sclerosis in early adulthood

Rice Emerging Scholars Program receives $2.5M NSF grant to boost STEM education

Virtual rehabilitation provides benefits for stroke recovery

Generative AI develops potential new drugs for antibiotic-resistant bacteria

Biofuels could help island nations survive a global catastrophe, study suggests

NJIT research team discovering how fluids behave in nanopores with NSF grant

New study shows association of historical housing discrimination and shortfalls in colon cancer treatment

Social media use may help to empower plastic surgery patients

Q&A: How to train AI when you don't have enough data

Wayne State University researchers uncover potential treatment targets for Zika virus-related eye abnormalities

Discovering Van Gogh in the wild: scientists unveil a new gecko species

Small birds spice up the already diverse diet of spotted hyenas in Namibia

Imaging detects transient “hypoxic pockets” in the mouse brain

Dissolved organic matter could be used to track and improve the health of freshwaters

Indoor air quality standards in public buildings would boost health and economy, say international experts

Positive associations between premenstrual disorders and perinatal depression

New imaging method illuminates oxygen's journey in the brain

Researchers discover key gene for toxic alkaloid in barley

New approach to monitoring freshwater quality can identify sources of pollution, and predict their effects

Bidirectional link between premenstrual disorders and perinatal depression

Cell division quality control ‘stopwatch’ uncovered

Vaccine protects cattle from bovine tuberculosis, may eliminate disease

Andrew Siemion to receive the SETI Institute’s 2024 Drake Award

New study shows how the Crimean-Congo hemorrhagic fever virus enters our cells

Neoadjuvant chemotherapy proves effective for locally advanced penile squamous cell carcinoma

Study flips treatment paradigm in bilateral Wilms tumor, shows resistance to chemotherapy may point toward favorable outcomes

[Press-News.org] Limiting incident NA for efficient wavefront shaping through thin anisotropic scattering media