SUTD researchers use nanoscale 3D printing to create high-resolution light field prints
2021-06-22
(Press-News.org) Wouldn't it be amazing if printed images can look three-dimensional (3D)? Unfortunately, conventional prints like photographs display two-dimensional (2D) images with a fixed appearance as they contain only intensity and colour information. These prints are unable to display a 3D image because they lack directional control of light rays, hence resulting in the loss of depth information.
To address this problem, a team of researchers from the Singapore University of Technology and Design (SUTD) used a nanoscale 3D printing technique to create high-resolution light field prints (LFP). The LFP comprises an array of microlenses aligned on top of an array of structural colour pixels. When the LFP is illuminated by ordinary white light, a 3D image is displayed. The 3D image is autostereoscopic, which means that it can be viewed without needing to wear special glasses. The image changes appearance as it is viewed from varying angles, which gives the LFP a special 3D visual effect.
More importantly, high-resolution LFPs are needed to display ultra-realistic 3D images that have potential applications in artworks and security items. By using nanoscale 3D printing to create LFPs, the team achieved a maximum pixel resolution of 25,400 dots per inch (dpi), which surpasses the pixel resolution of consumer inkjet printers ~1,200 dpi. The structural colour pixels in the LFP are made of nanopillars (~300nm diameter). Perhaps the most remarkable result is that each colour pixel can be represented by a single nanopillar to produce the LFP at its maximum resolution.
SUTD Associate Professor Joel Yang, who is the principal investigator of this research, remarked: "This is possibly the first time that 3D printing is used to entirely create a multi-coloured light field print (LFP) in a single step, without the use of dyes, and without the need for manual alignment of microlenses to the colour pixels. The prints are embedded with up to 225 frames within a single LFP to generate smooth viewing transitions at unprecedented resolution. These effects will lead to 2D prints that produce ultra-realistic 3D visuals in future."
The team anticipates that high-resolution LFPs will become more readily available in the market when nanotechnology allows greater scalability and throughput. This research was published in Nature Communications.
INFORMATION:
[Attachments] See images for this press release:
ELSE PRESS RELEASES FROM THIS DATE:
2021-06-22
A research team led by Professor Jang-Sik Lee of Pohang University of Science and Technology (POSTECH) has successfully developed the halide perovskite-based memory with ultra-fast switching speed. The findings from this study were published in Nature Communications on June 10, 2021.
Resistive switching memory is a promising contender for next-generation memory device due to its advantages of simple structure and low power consumption. Various materials have been previously studied for resistive switching memory. Among them, halide perovskites are receiving much attention for use in the memory because of low operation voltage and high on/off ratio. However, halide perovskite-based ...
2021-06-22
People who have contact with other social groups are more likely to be committed to social justice. However, an international study led by the University of Zurich has shown that for this to be the case, power relations and discrimination must be actively addressed and group-specific needs must be met. It is important that disadvantaged group members, such as racial minorities and LGBTIQ+ individuals, are given a voice, and that those who belong to advantaged groups do not feel labeled as biased.
People who are socially disadvantaged or discriminated against because they belong to a particular group often join forces with other disadvantaged people to fight together for better rights. Prominent examples of such political engagement are the women's rights movement, Black Lives ...
2021-06-22
Rather than levelling inequality, as the Great Depression did, the COVID-19 pandemic has exacerbated inequalities around the world allowing some wealthy investors to benefit from the crisis and make a fortune on the misfortune of others.
During March to December last year, U.S. billionaires increased their wealth by over one-third, to one trillion dollars, while millions of Americans faced deep financial hardship.
New research from Copenhagen Business School has examined how American "shadow banks"- which are less regulated and include private credit intermediaries such as private equity, venture capital, and hedge fund firms - have invested in ways that extract profit from the misfortunes of frontline workers, struggling companies, ...
2021-06-22
People who have experienced childhood trauma get a more pleasurable "high" from morphine, new research suggests.
University of Exeter scientists compared the effects of morphine on 52 healthy people - 27 with a history of childhood abuse and neglect, and 25 who reported no such experiences in childhood.
Those with childhood trauma liked morphine (an opioid drug) more, felt more euphoric and had a stronger desire for another dose.
Those with no childhood trauma were more likely to dislike the effects and feel dizzy or nauseous.
"There are high rates of childhood trauma in people with addictions. Our findings ...
2021-06-22
Warm mix asphalt (WMA) is gaining attention in the asphalt industry as an eco-friendly and sustainable technology. WMA reduces energy consumption while simultaneously minimizing vapors and greenhouse gas emissions during the production of asphalt mixtures in comparison to conventional asphalt. However, high moisture susceptibility and ageing of asphalt make WMA less durable on the roads.
To address both issues in WMA technology, a team from the Energy Safety Research Institute (ESRI) at Swansea University and Braunschweig Pavement Engineering Centre (ISBS) at the Technical University of Braunschweig have discovered ...
2021-06-22
Listening to music while running might be the key to improving people's performance when they feel mentally fatigued a study suggests.
The performance of runners who listened to a self-selected playlist after completing a demanding thinking task was at the same level as when they were not mentally fatigued, the research found.
The study is the first to investigate the effect of listening to music playlists on endurance running capacity and performance when mentally fatigued.
Researchers at the University of Edinburgh used two tests to study how listening to music affected the running performance of ...
2021-06-22
Skoltech researchers and their colleagues from Russia and Serbia have reviewed almost a thousand patents held by some two hundred organizations involved in the New Space economy. The analysis helped draw a comprehensive picture of technology trends in the field. The paper was published in the journal Progress in Aerospace Sciences.
"New Space" is a loosely defined term that encompasses the recent flurry of space-related activities coming from smaller actors rather than a handful of space-faring nations. Put somewhat simply, while the Apollo missions were more traditional, SpaceX, Rocket Lab (launching small satellites from New Zealand) or LeoLabs (a space junk tracking company) are undeniably parts of a new and different ...
2021-06-22
In 2020, as many states of emergency were declared around the world during the first wave of the COVID-19 pandemic as there were in the entire previous decade. The influence of neighbouring countries on each other, weak democracies and poor pandemic preparedness are some of the explanations, according to research from the University of Gothenburg and Stockholm University.
A state of emergency is a situation in which a country's ordinary laws and rights are suspended and authorities are given increased powers. A state of emergency is declared by the government of a country, often as a result of war, civil unrest or natural disasters. The introduction of a curfew is ...
2021-06-22
Protected Satellite Communications (SatComs) exhibit specific characteristics such as security, intelligence, anti-jamming, and nuclear disaster survivability. They constitute one of the key research topics in modern communications. Currently, the United States is using the latest Advanced Extremely High-Frequency (AEHF) system to provide protected communications. Other countries are also employing their own protected SatCom systems to meet future operational requirements. Furthermore, in the modern intelligent age, many intelligent-related technologies are introduced into the protected SatCom ...
2021-06-22
New York, NY (June 22, 2021) - A new class of drugs that inhibits a "master switch" involved in the vast majority of cases of mantle cell lymphoma (MCL), a fatal subtype of non-Hodgkin's lymphoma, has been discovered by researchers at Mount Sinai.
In a study in Clinical Cancer Research published in June, the team reported that the drugs, known as small-molecule inhibitors of the SOX 11 oncogene, are toxic to MCL tumor development in human cells studied outside the body. If the effect is replicated in living patients, the discovery could lead to new therapies for a disease that is highly resistant to existing treatments.
"The SOX 11 protein, which is expressed in up to 90 percent of mantle cell lymphoma patients, is an attractive target for therapy," said senior author Samir Parekh, MD, ...
LAST 30 PRESS RELEASES:
[Press-News.org] SUTD researchers use nanoscale 3D printing to create high-resolution light field prints
