RESEARCH HIGHLIGHTS

BACK ISSUES

[ Vol. 67 ]
2D Electronics Could Be One Drop Away

A research team at MANA has developed a surprisingly simple method for fabricating highly organized mono- and multilayers of 2D nanosheets. All you need is a pipette and a hotplate. [...]

[ Vol. 66 ]
New EDLT-DAC Provides Insights Into High-Pressure Environments

MANA researchers have devised a way to control the carrier density in various materials under high pressure by combining an electric double-layer transistor (EDLT) with a diamond anvil cell (DAC) and applying the resulting EDLT-DAC to thin films. [...]

[ Vol. 65 ]
New Laser-Assisted Non-Volatile Memory Based on 2D van-der-Waals Heterostructures

A research team at MANA has demonstrated a laser-assisted non-volatile memory device based on two-dimensional van-der-Waals heterostructures. [...]

[ Vol. 64 ]
Biogenic Iron Sulfide Nanoparticles Enable Electron Uptake in Bacteria

A MANA team has identified the mechanism underlying the synthesis of long, electrically conductive pathways via iron sulfide (FeS) nanoparticles (NPs) in bacteria. This has implications in the development of new ways to inhibit microbial iron corrosion, as well as understanding the pathways of organic matter preservation in marine systems. [...]

[ Vol. 63 ]
On/Off Boundary of Photocatalytic Activity between Single- and Bilayer MoS2

A team at MANA has succeeded in spatially resolving the photocatalytic activity of molybdenum disulfide (MoS2) as a model catalyst. The findings advance our understanding of the potential photocatalytic activity of 2D nanophotocatalysts. [...]

[ Vol. 62 ]
Thermoelectric Device Combined with Wavelength-selective Thermal Emitter Generates Continuous Power, Day and Night

A team at MANA has created a thermoelectric device that can generate power continuously, 24 hours a day, without the problem of voltage dropping to zero when night falls and temperatures drop. [...]

[ Vol. 61 ]
First Fabrication of fBBLG/hBN Superlattices

A team at MANA has demonstrated for the first time the fabrication of folded bilayer-bilayer graphene (fBBLG)/hexagonal boron nitride (hBN) superlattices. This achievement could pave the way for expanded applications of superlattices, such as in a variety of quantum devices. [...]

[ Vol. 60 ]
New Solid Materials Enable Broader Application of Medical Gases

Hydrogen sulfide (H2S) and nitric oxide (NO) are gases with useful bio-activities, such as anti-oxidation, anti-inflammation and vasodilation. H2S is an ingredient in hot spring and long known to have positive effects on the skin and cardiovascular system. [...]

[ Vol. 59 ]
AFM’s Probe Used to Induce Chemical Reactions at Specific Sites on Single Molecule

A team at MANA has demonstrated controlled addition reactions at specific sites on a single molecule by using an atomic force microscope’s (AFM) local probe at low temperature. This work enables the synthesis of functional carbon nanostructures that cannot be obtained by conventional chemistry. [...]

[ Vol. 58 ]
New Insights into Structure of Layered Hydrogen Borides

A team of MANA researchers has determined the structure of a layered hydrogen boride synthesized via a soft chemical route. The team found that the structure consists of B-H-B bridging bonds and B-H terminal bonds, [...]

[ Vol. 57 ]
‘Liquid Electret’ Could Offer New Power Source for Wearable Electronics

Researchers at MANA have created a material that could power a new generation of wearable electronic mobile devices. [...]

[ Vol. 56 ]
How Do Neuromorphic Nanowire Networks Find Routes to Convey Signals?

Researchers at MANA have investigated the dynamical behavior of neuromorphic systems made of memristive nano-switches connected together forming complex networks. They have shown experimentally the interplay between network topology and memristor dynamics giving rise to self-organized states. [...]

[ Vol. 55 ]
A New On-chip Sensor for Infrared Spectrography

A team at MANA has created a new type of multi-wavelength infrared sensor capable of detecting thermal radiation of specific wavelengths. It could have a range of applications, including temperature/materials-specific imaging and remote sensing of air pollution. [...]

[ Vol. 54 ]
A Low-cost, Safe and High-performance Iron Oxide Photocatalyst

A team at MANA has devised a technique for boosting the performance of iron oxide photocatalysts, which could lead to low-cost, non-toxic and environment-friendly alternatives to current materials, as well as new uses, such as photocatalytic applications in living bodies.[...]

[ Vol. 53 ]
NA New Way to Observe Heat Flows at Nanoscale

A team at MANA has devised a method for visualizing heat conduction pathways at nanoscale -- a development that could lead to progress in the energy efficiency of materials. [...]

[ Vol. 52 ]
Polymeric Particles with Anti-Inflammatory Potential for Neurodegenerative Disease Treatment

One of the pathological mechanisms observed in neurodegenerative diseases in the central nervous system, including Alzheimer’s and Parkinson’s disease, is the accumulation of so-called microglia — cells that perform functions such as removing dead cells and excess synapses in the brain. When over-activated, microglia can also produce cytokines (small proteins) causing inflammation. [...]

[ Vol. 51 ]
Enhanced Thermoelectric Conversion in Magnetic Materials through Spin Fluctuations

Rather than letting ‘waste’ heat dissipate, it is possible to use it and convert it into electrical energy. Such thermoelectric conversion is an important technology, especially in today’s context of alternative energy sources. Yet, achieving high recovery efficiency is difficult. [...]

[ Vol. 50 ]
High-Performance Solar Cells Based on Silicon Nanopencil Structures

Solar cells are an important alternative energy source. The traditional solar-cell material of choice is crystalline silicon, which enables high power conversion efficiency, is stable, and has a well-established manufacturing process. Drawbacks with crystalline silicon are the high production cost and its fundamental efficiency limit. [...]

[ Vol. 49 ]
Porous Structure of a Layered Silicate with Selective Adsorption Properties Revealed

It is not always easy to precisely determine the crystal structure of layered materials — but in order to fully understand and exploit their properties, detailed structural information is needed. Magadiite is such a layered material, used as an adsorbent and a catalyst. It is known that magadiite is a kind of layered silicates: tetrahedra, each with oxygen atoms at the vertices and a silicon atom in the center, grouped in planar arrangements. [...]

[ Vol. 48 ]
Origins of Macroscopic Friction Linked to Energy Landscape on the Nanoscale

Everybody is familiar with friction — the phenomenon plays an important role in our daily lives. Yet, although phenomenological laws exist that describe friction on the macroscale, a detailed understanding of the processes involved on the microscale is lacking. Now, Hiroshi Sakuma and Shigeru Suehara with their colleagues have studied friction forces in mica, both theoretically and experimentally, and have found the origin of molecular friction in this system. [...]

[ Vol. 47 ]
Photonic Circuits Hosting Electromagnetic Waves with Pseudospin

Metamaterials are purposely built devices mimicking structural features of normal materials, but with unusual physical properties. Photonic crystals, for example, are periodic nanostructures consisting of material components with different refractive indices. They have lattice symmetries like solids, but the constituents of the unit cell of a photonic crystal are ‘bits’ of the different bulk materials. [...]

[ Vol. 46 ]
New Material That is Both a Thermoelectric and a Superconductor Identified by High-Throughput Materials Discovery

Researchers used materials discovery methods to identify and synthesize a material that has thermoelectric properties and, under pressure, is a superconductor. [...]

[ Vol. 45 ]
Artificial Intelligence Learns to Predict Photo-Functional Molecules

Artificial intelligence can be used to design new molecules; it is becoming a popular tool because of its potential for discovering molecules in unexplored chemical spaces, its ability to screen a huge number of potential molecules in a short amount of time and its tendency to find unconventional ways of solving problems. [...]

[ Vol. 44 ]
Ionic Devices Learn How to Make Decisions

Decision-making processes require the examination of complex data in order to effectively adapt to dynamic changes in the environment and make decisions about the most appropriate way to behave. Emulating these processes with computers requires enormous resources, so new avenues need to be explored. [...]

[ Vol. 43 ]
New Approach for the Synthesis of Carbon Nanosheets

Carbon nanosheets — thin materials consisting of only carbon — have many useful properties, including energy-storage and catalytic functionality. The large-scale production of carbon nanosheets, however, has been challenging. [...]

[ Vol. 42 ]
Flexible Organic Electronic Devices for Three-Valued Logic Circuitry

Wearable and flexible integrated-circuit technology is on the rise, especially in the context of the ‘internet of things (IoT)’ — devices sharing information through the internet. So-called organic field-effect transistors (OFETs), built from organic molecules, are mechanically flexible, and therefore suitable for IoT electronics. [...]

[ Vol. 41 ]
Evidence of a New Type of Quantum Effect

The quantum Hall effect (QHE) is a phenomenon that can occur in a two-dimensional electron gas — a system in which electrons can move in a plane but not perpendicularly to it. Such a system is typically realized in a heterostructure of thinly stacked layers of different semiconductors. [...]

[ Vol. 40 ]
Breakthrough in Printed Electronics Enables Device Formation at Room Temperature

Printing electronic devices and circuits on flexible substrates offers the possibility of low cost, mass production of high performance organic thin film devices using technology such as “roll-to-roll”. [...]

[ Vol. 39 ]
Pair Distribution Function Analysis Offers New Insights into the Structure and Identity of Nanomaterials

Satoshi Tominaka is a scientist at International Center for Materials Nanoarchitectonics (MANA) and internationally acknowledged for research on the applications of pair distribution functions (PDF) for the analysis of nanomaterials. [...]

[ Vol. 38 ]
Quantifying Smell with Nanoparticles-functionalized Membrane-type Surface Stress Sensor and “Data-Driven” Analysis

Chromatography is widely used for the quantitative identification of specific components in mixtures of compounds. For example, quantifying smell requires analysis of a complex mixture composed of thousands of chemical compounds. [...]

[ Vol. 37 ]
Metal Oxide/Graphene Nanosheet Composite Exhibits Unprecedented Energy Storage Properties

Single-layer metal oxide nanosheets sandwiched between graphene layers exhibit record energy storage figures of merit. [...]

[ Vol. 36 ]
Modulating Superconductivity of Two Dimensional Atomic Layers of Indium with Charge Transfer from Self-Assembled Organic Molecules

Charge and spin transfer from copper-phthalocyanine organic molecules self-assembled on superconducting atomic layers of indium modifies the superconducting transition temperature of the indium. [...]

[ Vol. 35 ]
Environmental Monitoring of Air Pollution: ‘Detect to Warn’ Sensing System for Monitoring Formaldehyde

Compact ‘referenced—chemiresistive-sensors’ consisting of network-assembly of semiconducting carbon nanotubes and hydroxylamine hydrochloride enable highly selective and continuous measurement of formaldehyde for environmental monitoring. [...]

[ Vol. 34 ]
Atomically Thin Perovskites Boost for Future Electronics

WPI-MANA has developed the world's highest performance dielectric nanofilms using atomically thin perovskites. This technology may revolutionize the next-generation of electronics. [...]

[ Vol. 33 ]
Innovative Transistors Based on Magnetically Induced Movement of Ions

Just as magnets attract iron particles in sandpits, permanent magnetics only attract one type of ion in an electrochemical solution, constituting the basis of magnetically controlled electrochemical transistors. [...]

[ Vol. 32 ]
Driving Soft Molecular Vehicles on a Metallic Surface

Soft molecules deposited on metallic surfaces were driven using a scanning tunneling microscope (STM) without mechanically pulling or pushing them, but by inducing inelastic excitations with the tunneling current. [...]

[ Vol. 31 ]
Atomic Switch Reaching Outer Space

10-year journey of the atomic switch in nanospace is finally reaching practical use in space satellites several thousand kilometers above earth. [...]

[ Vol. 30 ]
Topological Photonic Crystal Made of Silicon

WPI-MANA researchers derive topological photonic states purely based on silicon, which can lead to the development of new functions and devices through integration with semiconductor electronics. [...]

[ Vol. 29 ]
Tuning Magnetic Properties for Better Data Storage

New high-density data storage and spintronic devices could be achieved by reversibly controlling the electrical and magnetic properties of thin films. [...]

[ Vol. 28 ]
Opening the Way to Mobile Olfaction with Nanomechanical Sensors

An alliance between six organizations is setting a de facto standard for smell sensors employing a small, sensitive and versatile sensor element called the Membrane-type Surface stress Sensor (MSS). [...]

[ Vol. 27 ]
A Nanoparticle Boost for Solar-Powered Water Heating

A highly-efficient, nanoparticle-based method for heating water and generating water vapor from sunlight is demonstrated by WPI-MANA scientists. [...]

[ Vol. 26 ]
Electromagnetic Metamaterials with Zero-Refractive Index for Sub-Wavelength Photonics

A new class of optical topological transitions in electromagnetic metamaterials induced by the non-locality of the electromagnetic response is reported. [...]

[ Vol. 25 ]
Majorana Particles in Topological Superconductors: Search for Illusive Particles Equivalent to Their Own Anti-Particles

Theoreticians at MANA report on the existence of Majorana-type particles based on analysis of independent scanning tunneling spectroscopy measurements on thin film of topological insulator bismuth telluride on substrate of superconducting niobium selenide. The findings are important for robust topological quantum computing. [...]

[ Vol. 24 ]
Autonomous Decision-Making by Single Photons

Efficient and adaptive autonomous decision-making has been implemented based on a purely physical mechanism exploiting the quantum nature of photons. [...]

[ Vol. 23 ]
Seeding Better Efficiencies in Monocrystalline Silicon Solar Cells

New ‘single-seed cast method’ for producing high quality monocrystalline solar cells has tremendous potential for the manufacture of low cost, high efficiency silicon solar cells. [...]

[ Vol. 22 ]
Holes in Gold Enhance Molecular Sensing

Electrochemical techniques produce tuneable porous gold films, where the empty spaces enhance light scattering and sensing signals. [...]

[ Vol. 21 ]
Supercomputing in Materials Science: First-Principles Simulations of Large Molecules

Large-scale calculation capable of handling material systems containing 100 to 1,000 times more atoms than conventional methods. [...]

[ Vol. 20 ]
Hydrocarbon Photocatalysts Get in Shape and Go for Gold

A combination of semiconductor catalysts, optimum catalyst shape, gold-copper co-catalyst alloy nanoparticles and hydrous hydrazine reducing agent enables an increase of hydrocarbon generation from CO2 by a factor of ten. [...]

[ Vol. 19 ]
Visualizing Superconductive Coupling over Atomic Steps

Scanning tunnelling microscopy imaging under differing magnetic fields gives fundamental insights into the behavior of supercurrents and vortices on the surface of indium-doped silicon films. [...]

[ Vol. 18 ]
Intracellular Imaging Gets Interactive

A so-called bioparallel chemistry approach is successfully used to image and activate an essential metabolism compound inside a cell. [...]

[ Vol. 17 ]
Atomic Switch Networks for Cognitive Technology

A self-organized network of inorganic synapses provides a unique approach toward the development of brain-like computers. [...]

[ Vol. 16 ]
A Cool Approach to Flexible Electronics

A nanoparticle ink that can be used for printing electronics without high-temperature annealing presents a possible profitable approach for manufacturing flexible electronics. [...]

[ Vol. 15 ]
Revealing the "Scotch-Tape" Technique Mechanism

First In-Tandem Experimental and Theoretical Modeling of a Famous “Scotch-Tape” Technique for Making Two-Dimensional Graphene-like Nanosheets. [...]

[ Vol. 14 ]
Nanomechanical Sensors Detect Cancer from Breath

An array of functionalised membrane-type surface stress sensors (MSS) distinguishes cancer patients from healthy people through a signature response to breath samples. [...]

[ Vol. 13 ]
Oxide Nanosheets Trump Current State-of-the-Art Capacitor Materials

Researchers developed ultrathin high-performance capacitors using LEGO-like game of oxide nanosheets. [...]

[ Vol. 12 ]
Heart Cells Respond to Stiff Environments

Proteins associated with the regulation of organ size and shape have been found to respond to the mechanics of the microenvironment in ways that specifically affect the decision of adult cardiac stem cells to generate muscular or vascular cells. [...]

[ Vol. 11 ]
A Simple Way to Treat Kidney Failure

A new technique for purifying blood using a nanofiber mesh could prove useful as a cheap, wearable alternative to kidney dialysis. [...]

[ Vol. 10 ]
In Situ Bandgap Tuning of Graphene Oxide Achieved by Electrochemical Bias

The ability to modulate the physical properties of graphene oxide within electronic components could have numerous applications in technology. [...]

[ Vol. 9 ]
3D Strutted-Graphene by a Sugar Blowing Method

Robust, highly conductive 3D graphene structures for use in super-capacitors, through a method inspired by blown sugar, created. [...]

[ Vol. 8 ]
Crystal Film Growth: Nanosheets Extend Epitaxial Growth Applications

Molecularly thin two-dimensional crystals can alleviate the lattice matching restrictions of epitaxial crystalline thin film growth, as reported by researchers in Japan. [...]

[ Vol. 7 ]
Smart Anticancer Nanofibers: Setting Treatments to Work Together

Incorporating magnetic nanoparticles and an anticancer drug into crosslinked polymer nanofibers presents a twofold treatment for fighting cancer with diminished side effects. [...]

[ Vol. 6 ]
Inorganic Materials Display Massive and Instantaneous Swelling and Shrinkage

The first observation of massive swelling and shrinkage of inorganic layered materials like a biological cell provides insights into the production of two-dimensional nanocrystals. [...]

[ Vol. 5 ]
Detecting Caesium with Naked Eyes

'Micrometre-level naked-eye detection' of caesium ions, a major source of contamination in the vicinity of radioactive leaks, is demonstrated in a material developed by researchers in Japan. [...]

[ Vol. 4 ]
On-Demand Synaptic Electronics: Circuits that Learn and Forget

Researchers in Japan and the US propose a nanoionic device with a range of neuromorphic and electrical multifunctions that may allow the fabrication of on-demand configurable circuits, analog memories and digital–neural fused networks in one device architecture. [...]

[ Vol. 3 ]
Bone Tissue Engineering: Attaching Proteins for Better Regeneration

Researchers in Japan demonstrate a new protein binding approach for effectively promoting bone regeneration. Current treatments for bone defects and bone tissue regeneration have significant limitations. Now a new method that immobilizes a fusion protein in a hybrid collagen-polymer supportive scaffold shows promise for bone tissue engineering. [...]

[ Vol. 2 ]
High-Performance Thin Film Boost for Electronics Research

MANA researchers have developed the world's highest performance thin-film capacitors using a new high-permittivity (high-κ) dielectric sheet with molecular-level thickness (~1 nm). This technology may revolutionize the next-generation electronics. [...]

[ Vol. 1 ]
Atomic Nano-Switches Emulate Human Memory

MANA scientists discover that inorganic synapses mimic the human brain. [...]