Home
Rice researchers map diffusion graphene and hexagonal boron nitride aqueous
Rice researchers map the diffusion of graphene and hexagonal boron nitride in aqueous solutions
Rice University researchers have mapped out how bits of 2D materials move in liquid ⎯ which that could help scientists assemble macroscopic-scale materials with the same useful properties as their 2D counterparts.In order to maintain these special properties in bulk form, sheets of 2D materials have to be properly aligned ⎯ a process that often occurs in solution phase. The Rice team focused on graphene and hexagonal boron nitride, a material with a similar structure to graphene but composed of boron and nitrogen atoms. “We were particularly interested in hexagonal boron nitride, which is sometimes called ‘white graphene’ and which, unlike graphene, doesn’t conduct electricity but has high tensile strength and is chemically resistant,” said Angel Martí, a professor of chemistry, bioengineering, materials science and nanoengineering and chair of Rice’s chemistry department. “One of the things that we realized is that the diffusion of hexagonal boron nitride in solution was not very well understood.“In fact, when we consulted the literature, we found that the same was true for graphene. We couldn’t find an account of diffusion dynamics at the single molecule level for these materials, which is what motivated us to tackle this problem.”The researchers used a fluorescent surfactant to tag the nanomaterial samples and render their motion visible. Videos of this motion allowed researchers to map out the trajectories of the samples and determine the relationship between their size and how they move.“From our observation, we found an interesting trend between the speed of their movement and their size,” said Utana Umezaki, a Rice graduate student who is a lead author on the recent study. “We could express the trend with a relatively simple equation, which means we can predict the movement mathematically.” Graphene was found to move slower in the liquid solution, possibly due to the fact that its layers are thinner and more flexible than hexagonal boron nitride, giving rise to more friction. Researchers believe that the formula derived from the experiment could be used to describe how other 2D materials move in similar contexts.“Understanding how diffusion in a confined environment works for these materials is important because ⎯ if we want to make fibers, for example ⎯ we extrude these materials through very thin injectors or spinnerets,” Martí said. “So this is the first step toward understanding how these materials start to assemble and behave when they are in this confined environment.”As one of the first studies to investigate the hydrodynamics of 2D nanosheet materials, the research helps fill a gap in the field and could be instrumental to overcoming 2D material fabrication challenges.“Our final objective with studying these building blocks is to be able to generate macroscopic materials,” Martí said.
Source:
ACS Nano
news.rice.edu
Tags:
Boron Nitride
Technical / Research
Rice University
Posted: Feb 04,2024 by Roni Peleg
Add new comment
{
"@context": "http://schema.org", "@type": "NewsArticle", "headline": "Rice researchers map the diffusion of graphene and hexagonal boron nitride in aqueous solutions", "mainEntityOfPage": {"@type": "WebPage","@id": "https://www.graphene-info.com/rice-researchers-map-diffusion-graphene-and-hexagonal-boron-nitride-aqueous"},"publisher": {"@type": "Organization", "name": "Graphene-Info",
"logo": {"@type": "ImageObject","url": "https://www.graphene-info.com/img/misc/publisher-logo/graphene-info-logo.jpg","width": 600,"height": 60}},"datePublished": "2024-02-04T06:00:00+02:00", "dateModified": "2024-02-04T06:00:00+02:00",
"author": { "@type": "Person", "name": ""}
}
Add new comment
.adslot_afterarticle{ min-width:234px;max-width:234px;width:100%;height:60px } @media (min-width:800px) { .adslot_afterarticle{min-width:728px;max-width:728px;width:100%;height:90px } }(adsbygoogle = window.adsbygoogle || []).push({});
Researchers design graphene biosensor that uses sound waves for chemical fingerprinting of ultrathin biolayers
Researchers use graphene and boron nitride to develop new brain-like transistor that mimics human intelligence
Researchers develop 'golden rules' for controlling alignment of supermoiré lattices
Researchers study ‘sandwich’ of graphene and boron nitride for next-gen microelectronics
Researchers use graphene to design transformable nano-scale electronic devices
Graphene quantum dots could improve magnetic field sensors
Graphene used to grow the world's smallest microLEDs and highest-density microLED arrays
.adslot_rightside { min-width:234px;max-width:234px;width:100%;height:60px }@media (min-width:800px) { .adslot_rightside {min-width:160px;max-width:160px;width:100%;height:600px } }(adsbygoogle = window.adsbygoogle || []).push({});
WeeklyMonthlyYearly
Researchers develop self-assembling graphene sensors for modular wearable electronics
Graphene oxide gives a boost to new intranasal flu vaccine
Development of graphene-based sensor tattoos for sweat analysis gets funding boost
Nanoxplore expands capacity in Quebec plant to accommodate higher customer volumes
New graphene center launched in Kerala, India
Researchers design copper-graphene composites with improved electrical conductivity
Lyten secures $4 Million grant from Department of Energy
Graphene oxide gives a boost to new intranasal flu vaccine
Development of graphene-based sensor tattoos for sweat analysis gets funding boost
Sparc Technologies and Swinburne University team up to advance graphene coatings and composites
Graphene oxide gives a boost to new intranasal flu vaccine
Researchers succeed in creating graphene-based functional semiconductor
Nanotech Energy announces its graphene-based batteries are available for pre-order
Researchers use graphene and boron nitride to develop new brain-like transistor that mimics human intelligence
Researchers examine brucite/graphene composites for improved electronics
©2009-2024 Metalgrass LTD | Privacy Policy | contact us
Get our free monthly newsletter!