The new technique uses a sophisticated set of algorithms to direct an electron beam at a target atom with a precision of a few picometers (one trillionth of a meter).
Image Credit: Courtesy of the researchers
(CC BY-NC-ND 3.0)
Scientific Frontline: Extended "At a Glance" Summary: Mesoscale Atomic Engineering
The Core Concept: A novel methodology for deterministically moving tens of thousands of individual atoms within the three-dimensional crystalline lattice of a solid material at room temperature.
Key Distinction/Mechanism: Unlike legacy techniques restricted to two-dimensional surface manipulation under ultracold, high-vacuum conditions, this approach utilizes an algorithmically guided electron beam. The beam uses a minimal number of electrons to map coordinates with picometer precision, then follows a carefully designed oscillating path to physically push entire columns of atoms into new internal configurations, creating robust quantum defects beneath the material's surface.
Origin/History: While single-atom surface manipulation was pioneered in 1989 using a scanning tunneling microscope, this rapid, three-dimensional internal manipulation capability was published in Nature in May 2026 by researchers from MIT, Oak Ridge National Laboratory, and collaborating institutions.
Major Frameworks/Components:
- Algorithmic Precision Mapping: The deployment of low-dose electron algorithms to locate atomic targets rapidly without inflicting unintended damage to the overarching crystal structure.
- Directed Oscillating Beams: Electron beams engineered to sweep through the material, efficiently driving atomic displacements at specific coordinates.
- Quantum Defect Engineering: The deliberate creation of customized atom-sized vacancies and interstitial pairs—demonstrated utilizing chromium atoms in chromium sulfide bromide—to simulate specific electronic structures and map them directly into a solid.
Branch of Science: Materials Science, Quantum Physics, Nanotechnology, and Solid-State Physics.
Future Application: The engineering of programmable matter to support scalable quantum computing, atomic-scale logic devices, high-density magnetic memory, and advanced optical and magnetic sensors.
Why It Matters: By enabling the rapid, three-dimensional rearrangement of atomic structures at room temperature, this technique allows researchers to realize artificial states of matter with customized, tunable quantum properties that remain stable outside of highly controlled laboratory environments.
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| “The results demonstrate the ability to deterministically move atoms repeatedly within a material’s 3D atomic lattice,” says MIT Research Scientist Julian Klein. An animation shows how researchers controlled the movement of atoms. Image Credit: Courtesy of the researchers (CC BY-NC-ND 3.0) |
It has been 37 years since scientists first demonstrated the ability to move single atoms, suggesting the possibility of designing materials atom by atom to customize their properties. Today, several techniques allow researchers to move individual atoms to give materials exotic quantum properties and improve our understanding of quantum behavior.
Existing techniques, however, can only move atoms across the surface of materials in two dimensions. Most also require painstakingly slow processes and high-vacuum, ultracold laboratory conditions.
Now, a team of researchers at the Massachusetts Institute of Technology (MIT), the Department of Energy’s Oak Ridge National Laboratory, and other institutions has created a way to precisely move tens of thousands of individual atoms within a material in minutes at room temperature. The approach uses a set of algorithms to carefully position an electron beam at specific locations within a material and then scan the beam to drive atomic motions.
“The results demonstrate the ability to deterministically move atoms repeatedly within a material’s 3D atomic lattice,” says MIT research scientist Julian Klein, who conceived of and directed the project. “We can reprogram materials to create defects at will, realizing entirely artificial states of matter not found in nature with a wide range of potential applications, including sensing, optical, and magnetic technologies. There are so many opportunities enabled by these techniques.”
“It’s like a photocopier that can create columns of identical atomic defects,” says Frances Ross, MIT’s TDK Professor in Materials Science and Engineering. “It’s especially useful because you can move a few atoms to form defects and do it again and again to build atomic arrangements in three dimensions that have tunable functions in a system that is more robust because the defects exist beneath the surface.”
In a Nature paper appearing today, the researchers described their approach and how they used it to create more than 40,000 quantum defects in a crystalline semiconductor material.
The researchers say the approach offers a new way to study quantum behavior in materials. It could also one day lead to improvements in systems that leverage quantum defects, such as quantum computers, dense magnetic memory, atomic-scale logic devices, and more.
Designing Matter
In a now-famous 1989 demonstration, IBM researchers used a scanning tunneling microscope to arrange 35 atoms on the surface of a chilled crystal to spell out “IBM.” It was the first time atoms had been precisely positioned, representing an important milestone. The approach enabled scientists to engineer specific defects, such as atom-sized vacancies and surface atoms in crystalline materials, leading to major advances in quantum science. However, placing those 35 atoms had taken researchers many hours, if not days.
In parallel with those developments, researchers also developed two additional approaches for manipulating atoms in a vacuum: using optical tweezers to trap neutral atoms and using oscillating electric fields to trap ions.
While those approaches have enabled remarkable progress, they remain limited to either surfaces or highly controlled experimental systems. Another factor limiting the design of materials for applications such as quantum computers is the inability of atomic manipulation techniques to move atoms in three dimensions: the patterns are created on the surface of a material, where they are exposed to the environment and cannot survive outside tightly controlled laboratory settings.
Engineering usable materials with custom quantum properties would require researchers to rearrange many more atoms, preferably within the interior of materials. The MIT researchers demonstrated this capability in their Nature study.
“We were trying to improve the number of atoms we could move in a reasonable length of time,” Ross explains. “You want to place the atoms close to each other so they can interact, and you want to have a lot of them arranged as you’d like—thousands or millions of atoms in specific locations you’ve chosen. That’s been challenging with existing techniques.”
The researchers used high-performance microscopes at the Department of Energy’s Oak Ridge National Laboratory for their work. Their new technique uses a sophisticated set of algorithms to direct an electron beam at a target atom with a precision of a few picometers (one-trillionth of a meter). The beam executes a tight loop to help zero in on its target, then sends a beam of electrons through the material in a carefully designed oscillating path, spending about a second at each location.
“We developed algorithms that allow us to quickly obtain information on where the beam is in the material,” Klein explains. “The trick is to use very few electrons in the process of getting that information, so the whole process is fast and does not unintentionally damage your crystal. It took many years to develop these algorithms and determine the minimum required information needed to infer where the atoms are located with the highest precision.”
The motion of the beam as it delivers electrons, an oscillating path devised by the researchers, pushes entire columns of atoms to new locations in much the same way a person might swipe a smartphone screen.
In their experiments, the researchers used this approach to direct the movement of columns of chromium atoms in a stable semiconductor material, chromium sulfide bromide, using a crystal about 13 nanometers thick. The beam created atom-sized vacancies in the material—each vacancy paired with the displaced atom—that they calculated would give the crystal exotic quantum properties.
To show how well their approach scaled, the researchers created over 40,000 defects in about 40 minutes, creating vacancies and interstitials across different distances and in different patterns, calculating that different atomic arrangements should give rise to different quantum mechanical properties.
“Each of these defects has certain ways to interact with its neighbors,” Ross says. “If you place them in a pattern, you could essentially simulate the interactions between the electrons within a molecule, so the whole electronic structure of that molecule can, in a sense, be mapped onto a pattern that you can write into a solid material.”
Probing Quantum Systems
The success of the approach was likely aided by the way chromium binds within the semiconductor, which has a unique electronic structure. The researchers are further investigating other crystals in which this might work, though they suspect it will be applicable to a diverse range of materials.
In the materials where it works, the approach has several advantages over existing techniques.
“Moving atoms within solids enables the creation of quantum properties in materials that are stable in the air outside of vacuum conditions,” Klein explains. “And this approach is also scalable to many atomic manipulations, so moving thousands or millions of atoms to create artificial structures would represent completely new physics. We’d like to study those systems.”
The researchers say their technique lays the foundation for a new class of programmable matter, which could aid the development of a range of stable quantum devices.
“This is a way of accessing physical phenomena that involve a lot of atoms placed in a certain specified arrangement and cannot be done by self-assembly,” Ross says. “You can create individually tuned atomic arrangements, and you can have so many of them, each arranged exactly how you like over areas that are tens and hundreds of nanometers. That leads to collective physics we are excited to explore.”
Funding: The work was supported, in part, by the Department of Energy and the National Science Foundation.
Published in journal: Nature
Title: Mesoscale atomic engineering in a crystal lattice
Authors: Julian Klein, Kevin M. Roccapriore, Mads Weile, Sergii Grytsiuk, Andrew R. Lupini, Zdenek Sofer, Dimitar Pashov, Mark van Schilfgaarde, Swagata Acharya, Malte Rösner, and Frances M. Ross
Source/Credit: Massachusetts Institute of Technology | Zach Winn
Reference Number: ms051326_01
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