Connect with us

Hacking Matter

Single Molecule Sensors For Ultra-High Resolution Microscopy

Published

on

Using single molecule sensors, scientists in Jülich have mapped electric fields with unprecedented precision. The ultrahigh-resolution images provide information on the distribution of charges in the electron shells of single molecules and even atoms. The technique is relevant for diverse scientific fields, including investigations into biomolecules and semiconductor materials.

“Our method is the first to image electric fields near the surface of a sample quantitatively with atomic precision on the sub-nanometre scale,” said research group leader Ruslan Temirov. Such electric fields surround all nanostructures like an aura. Their properties provide information, for instance, on the distribution of charges in atoms or molecules.

Electric Field Maps With Unprecedented Nanometer Resolution

Electric field mappingThe research paper, published on Physical Review Letters and titled “Scanning Quantum Dot Microscopy,” is freely available. “We have reported a scanning probe technique that is able to provide truly three-dimensional, so far elusive, maps of the electrostatic potential field with nanometer resolution,” reads the conclusion of the paper.

The scientists “have pushed the capabilities of force microscopy to a new level by attaching a single molecule at the sharp end of an STM probe and exploiting it as a quantum dot capable of sensing electrostatic fields,” notes a review of the work.

To achieve ultra-high resolution, the scientists attached a single molecule – a quantum dot – to the tip of an atomic force microscope. Quantum dots are tiny structures, measuring no more than a few nanometres across, which due to quantum confinement can only assume certain, discrete states comparable to the energy level of a single atom. The molecular quantum dot terminating the tip of the microscope is very sensitive to electric fields, and allows the electrostatic potential to be mapped out around a target atom or molecule.

“Because the whole molecular balance is so small, comprising only 38 atoms, we can create a very sharp image of the electric field of the sample,” explains researcher Christian Wagner.

It’s a bit like a camera with very small pixels.

A patent is pending for the method, which is particularly suitable for measuring rough surfaces, for example those of semiconductor structures for electronic devices or folded biomolecules. “In contrast to many other forms of scanning probe microscopy, scanning quantum dot microscopy can even work at a distance of several nanometres. In the nanoworld, this is quite a considerable distance,” says Wagner.

The technique has only been applied in high vacuum and at low temperatures so far, but the scientists believe that future versions of the technique could be used in less extreme conditions.

“The increased sensitivity offered by this technique could be used to characterize rough surfaces, adsorbed materials on semiconductors, or artificial nanostructures,” says reviewer Philip Moriarty, University of Nottingham. “There are also fascinating possibilities for combining quantum dot microscopy with single-atom or single-molecule positioning, in which a scanning probe is used to construct nanostructures element-by-element.”

Images from Forschungszentrum Jülich.

Important: Never invest (trade with) money you can't afford to comfortably lose. Always do your own research and due diligence before placing a trade. Read our Terms & Conditions here. Trade recommendations and analysis are written by our analysts which might have different opinions. Read my 6 Golden Steps to Financial Freedom here. Best regards, Jonas Borchgrevink.

Rate this post:

Important for improving the service. Please add a comment in the comment field below explaining what you rated and why you gave it that rate. Failed Trade Recommendations should not be rated as that is considered a failure either way.
0 votes, average: 0.00 out of 50 votes, average: 0.00 out of 50 votes, average: 0.00 out of 50 votes, average: 0.00 out of 50 votes, average: 0.00 out of 5 (0 votes, average: 0.00 out of 5)
You need to be a registered member to rate this.
Loading...

Giulio Prisco is a freelance writer specialized in science, technology, business and future studies.




Feedback or Requests?

Click to comment

You must be logged in to post a comment Login

Leave a Reply

Altcoins

Crypto Market Development: South Korea’s National Policy Committee Chair Calls For ICO Legalization

Published

on

  • A member of South Korea’s governing Democratic party and the chairman of Korea’s National Policy Committee, Min Byung-Doo, is urging to ease the current regulations on Initial Coin Offerings (ICOs).
  • Min Byung-Doo wants to introduce necessary regulatory framework, allowing ICOs in the country.

Allow ICOs In South Korea

The South Korean National Policy Committee Chief, Min Byung-Doo, is calling for a regulatory framework to be explored. This would be to allow for Initial Coin Offerings (ICOs) to take place within the country. He stated that the current prohibiting of ICOs weakens the industry’s competitiveness appeal with foreign markets. Further boldly adding, this would be preventing growth.

In his statement at to lawmakers, Byung-Doo said, “We can see that the flow of investment is clearly changing compared to ICO and angel fundraising. The ICO has raised $1.7 billion for Telegram and $4 billion for Block.One, it is getting bigger and bigger.”

Further in the statement, Min Byung-Doo said, “Let the government, the National Assembly and the blockchain association quickly create a working group to block fraud, speculation, money laundering and develop the block-chain industry,”. However, he acknowledged the government’s reluctance to create the needed framework.

In September 2017, the Financial Services Commission in South Korea announced a ban on ICOs. The law has not yet been enacted.

Crypto Market Reaction

A lack of reaction has been observed for now, despite this determination to help further legitimize the digital currency market in South Korea. Crypto market developments in the country are always watched very carefully. This is given their large crypto market participation. It was reported in December 2017 that South Korea accounted for as much as 17% of all Ethereum trades occurring in cryptocurrency markets.

Market Reactions To South Korean Related News

Ripple (XRP) crashed in January, following CoinMarketCap’s decision to remove XRP price data from Korean exchange desks. This as a result largely brought down the total average.

XRP/USD Coinmarketcap update triggered drop

On 11th January, Korean crypto exchange Coinrail was hacked, and over $40 million in tokens were stolen. Bitcoin initially dropped over 11% on this.

BTC/USD Coinrail hack triggered drop

One final example, UPbit, a South Korean exchange, was investigated by authorities for illicitly moving customer funds to the account of its executives. Bitcoin initially dropped over 7% on the news.

BTC/USD UPbit investigation triggered drop

Given the above mentioned, one should keep an eye on any developments coming out of South Korea, for the foreseeable future.

Disclaimer: The author owns bitcoin, Ethereum and other cryptocurrencies. He holds investment positions in the coins, but does not engage in short-term or day-trading.

Featured image courtesy of Shutterstock.

Important: Never invest (trade with) money you can't afford to comfortably lose. Always do your own research and due diligence before placing a trade. Read our Terms & Conditions here. Trade recommendations and analysis are written by our analysts which might have different opinions. Read my 6 Golden Steps to Financial Freedom here. Best regards, Jonas Borchgrevink.

Rate this post:

Important for improving the service. Please add a comment in the comment field below explaining what you rated and why you gave it that rate. Failed Trade Recommendations should not be rated as that is considered a failure either way.
1 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 5 (1 votes, average: 5.00 out of 5)
You need to be a registered member to rate this.
Loading...

4.5 stars on average, based on 33 rated postsKen has over 8 years exposure to the financial markets. During a large part of his career, he worked as an analyst, covering a variety of asset classes; forex, fixed income, commodities, equities and cryptocurrencies. Ken has gone on to become a regular contributor across several large news and analysis outlets.




Feedback or Requests?

Continue Reading

Altcoins

Crypto Market Update: Japan’s Self-Regulatory Group (JVCEA) Readying Tighter Rules on Digital Assets

Published

on

  • A group of cryptocurrency exchange operators in Japan is readying to tighten up measures following recent cyber breach.
  • Action follows reported hack earlier in the month; cryptocurrency exchange Zaif lost an estimated $59.67 million.

Self-Regulatory Group Set To Tighten Rules

The Japan Virtual Currency Exchange Association (JVCEA) is exploring new rules to safeguard against cyber theft, including setting a cap on the amount of digital currencies managed online. This is citing informed sources, being reported by local news outlet, the Japan Times.

Informed sources detailed that the cap will likely to be around 10 – 20% of customer deposits. The JVCEA are said to be soon revising its rules, which were originally drawn up in June following multiple cyber attacks. These will be implemented once all has been approved by the Financial Services Agency. This is as part of the payment services law process in the country.

The move likely received large motive due to the reported hack earlier in September. The Japanese start-up Tech Bureau said that its cryptocurrency exchange, known as Zaif, had been hacked. Losses were estimated around $59.67 million of Bitcoin and two other digital currencies -Bitcoin Cash and Monacoin.

Market Reaction

No initial reaction was observed across the cryptocurrency market on this latest update, coming out of Japan as of Sunday 30th September. Despite this, however, Japan and crypto sell-off are not uncommon to have been used in the same sentence over the past years and even months. This means volatility could be in store for digital assets in the short term.

Back in January of this year, the largest reported hack on a Japanese exchange took place with Coincheck losing $530 million worth of NEM in a coordinated attack. This incident massively spooked the market, and was  a heavy contributor to the large sell-off in January. As we’ve observed over the past eight months, the market has yet to reclaim January’s peak (although this can’t be solely attributed to the theft). At the time, South Korea’s Attorney General had already spooked investors with FUD related to the possible banning of digital currencies in the country.

Against this backdrop, investors are advised to pay attention to Japan-related volatility.

BTC/USD weekly chart

Most recently, looking in the month of June, another sell-off was seen. This one came after Japan’s financial regulator ordered several cryptocurrency exchanges to improve their practices against money laundering. The action led bitFlyer — the country’s largest crypto exchange — to suspend new account creation. This was initiated to improve internal processes in order to curb money laundering and terrorist financing.

Disclaimer: The author owns bitcoin, Ethereum and other cryptocurrencies. He holds investment positions in the coins, but does not engage in short-term or day-trading.

Featured image courtesy of Shutterstock.

Important: Never invest (trade with) money you can't afford to comfortably lose. Always do your own research and due diligence before placing a trade. Read our Terms & Conditions here. Trade recommendations and analysis are written by our analysts which might have different opinions. Read my 6 Golden Steps to Financial Freedom here. Best regards, Jonas Borchgrevink.

Rate this post:

Important for improving the service. Please add a comment in the comment field below explaining what you rated and why you gave it that rate. Failed Trade Recommendations should not be rated as that is considered a failure either way.
1 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 51 vote, average: 5.00 out of 5 (1 votes, average: 5.00 out of 5)
You need to be a registered member to rate this.
Loading...

4.5 stars on average, based on 33 rated postsKen has over 8 years exposure to the financial markets. During a large part of his career, he worked as an analyst, covering a variety of asset classes; forex, fixed income, commodities, equities and cryptocurrencies. Ken has gone on to become a regular contributor across several large news and analysis outlets.




Feedback or Requests?

Continue Reading

Hacking Matter

The 2016 Nobel Prize in Chemistry Vindicates Radical Visions of Molecular Nanotechnology

Published

on

The Nobel Prize in Chemistry 2016 was awarded jointly to Jean-Pierre Sauvage, Sir J. Fraser Stoddart and Bernard L. Feringa “for the design and synthesis of molecular machines.” The award vindicates the dreams of nanotechnology enthusiasts, and points the way to the molecular nanotechnology proposed by Drexler in the eighties.

(more…)

Important: Never invest (trade with) money you can't afford to comfortably lose. Always do your own research and due diligence before placing a trade. Read our Terms & Conditions here. Trade recommendations and analysis are written by our analysts which might have different opinions. Read my 6 Golden Steps to Financial Freedom here. Best regards, Jonas Borchgrevink.

Rate this post:

Important for improving the service. Please add a comment in the comment field below explaining what you rated and why you gave it that rate. Failed Trade Recommendations should not be rated as that is considered a failure either way.
0 votes, average: 0.00 out of 50 votes, average: 0.00 out of 50 votes, average: 0.00 out of 50 votes, average: 0.00 out of 50 votes, average: 0.00 out of 5 (0 votes, average: 0.00 out of 5)
You need to be a registered member to rate this.
Loading...

Giulio Prisco is a freelance writer specialized in science, technology, business and future studies.




Feedback or Requests?

Continue Reading

Recent Comments

Recent Posts

A part of CCN

Hacked.com is Neutral and Unbiased

Hacked.com and its team members have pledged to reject any form of advertisement or sponsorships from 3rd parties. We will always be neutral and we strive towards a fully unbiased view on all topics. Whenever an author has a conflicting interest, that should be clearly stated in the post itself with a disclaimer. If you suspect that one of our team members are biased, please notify me immediately at jonas.borchgrevink(at)hacked.com.

Trending