Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > O-FIB: Far-field-induced near-field breakdown for direct nanowriting in an atmospheric environment

a, Schematic plot of the evanescent wave (Eew) around two nanoholes with different sizes on a dielectric. For the larger nanohole with a diameter comparable to the wavelength, the evanescent fields at each edge of the nanohole are independent and decay rapidly from the boundary. For the smaller nanohole with a deep-subwavelength aperture, the strong interaction between the two boundaries constructively enhances the optical intensity inside the nanohole and confines the light on a deep-subwavelength scale. b, Simulations of the E-field strength distribution for a titanium oxide film with a nanohole shown by the central white-out region (the intensity of the light inside the nanohole is close to maximum but is not shown for a better visualization). c, Schematic of the direct nanowriting of O-FIB (left) and the image of the free-form patterning obtained by birefringence microscope (right, upper) and scanning electron microscope (right, lower).

CREDIT
by Zhen-Ze Li, Lei Wang, Hua Fan, Yan-Hao Yu, Qi-Dai Chen, Saulius Juodkazis and Hong-Bo Sun
a, Schematic plot of the evanescent wave (Eew) around two nanoholes with different sizes on a dielectric. For the larger nanohole with a diameter comparable to the wavelength, the evanescent fields at each edge of the nanohole are independent and decay rapidly from the boundary. For the smaller nanohole with a deep-subwavelength aperture, the strong interaction between the two boundaries constructively enhances the optical intensity inside the nanohole and confines the light on a deep-subwavelength scale. b, Simulations of the E-field strength distribution for a titanium oxide film with a nanohole shown by the central white-out region (the intensity of the light inside the nanohole is close to maximum but is not shown for a better visualization). c, Schematic of the direct nanowriting of O-FIB (left) and the image of the free-form patterning obtained by birefringence microscope (right, upper) and scanning electron microscope (right, lower). CREDIT by Zhen-Ze Li, Lei Wang, Hua Fan, Yan-Hao Yu, Qi-Dai Chen, Saulius Juodkazis and Hong-Bo Sun

Abstract:
Lasers are becoming one of the dominant tools in the current manufacturing industry. Much effort has been devoted to improving the processing accuracy, and spatial resolutions as low as micrometers have been achieved in laser cutting, wedding, marking and stereolithography in an atmospheric environment. The femtosecond laser (fs-laser) is a particularly promising approach from this point of view, in addition to its three-dimensional (3D) processing capability and broad-spectrum material usability. Super-diffraction-limited feature sizes at a level of tens of nanometers based on multiphoton absorption thresholding, shrinkage and stimulation emission depletion effects have also been realized in fs-laser induced photocuring of polymers, which unfortunately are not applicable to solid materials. Optical near-field techniques provide an alternative super-resolution scheme by localizing light fields to nanometer scales with the physical shapes of sharp tips, tiny apertures, nanoparticles and small protrusions. Nevertheless, these approaches often rely on heavy movement and alignment systems to maintain precise probe-substrate spacing for practical fabrication/patterning throughput due to the evanescent nature of the near field. An innovative optical patterning technology that permits vacuum-free high-resolution processing comparable to conventional FIB processing is highly desired.In a new paper published in Light Science & Application, scientists from the State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instrument, Tsinghua University, Beijing, China, the State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, Changchun, China, and the Nanotechnology facility, Swinburne University of Technology, John st., Hawthorn, Australia reported an optical far-field-induced near-field breakdown (O-FIB) approach, allowing the nanofabrication applicable to almost any solid materials in atmosphere. The writing is initiated from nano-holes created by femtosecond laser induced multiphoton absorption and its cutting "knife edge" is sharpened by far-field regulated enhancement of the optical near field. A spatial resolution of sub-20 nm (λ/40 for light wavelength λ) is readily achieved. O-FIB is empowered by a simple polarization control of the incident light for steering nano-groove writing along the designed pattern.

O-FIB: Far-field-induced near-field breakdown for direct nanowriting in an atmospheric environment

Changchun, China | Posted on March 20th, 2020

"According to the continuous boundary condition of the normal component of electric displacement, we experimentally observed the light field nano-localization and polarization-vertical enhancement around the nanohole, which permits direct control of the near-field enhancement for nanoablation by far field. Based on this idea, we have realized free nano-writing with resolution as high as 18 nm by manipulating laser polarization and beam's trajectory in real time."

"Since for the self-regulation effect induced by the feedback between light and the initial seeds, our approach has the inherent robustness against the stochastic nature of initial ablation and the ability to manipulate line width. Besides, our approach demonstrates free-form stitchless writing of nano-grooves with controllable length, separation and trajectory. Meanwhile, the universality of seeding effect enables a large-area printing mode which is superior to the conventional FIB."

"Our presented technique has opened a new era of high-efficient nanomachining. It is applicable for various materials and surface in the fields of nanoelectronics, nanofluids, and nanomedicines. The possibility we show here to direct manipulating the near field through the far field, may inspire the researchers to push the femtosecond laser nanofabrication or even other domains of the optical processing to a higher level." The scientists forecast.

####

For more information, please click here

Contacts:
Hong-Bo Sun

Copyright © Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Microfluidics/Nanofluidics

A path to new nanofluidic devices applying spintronics technology: Substantial increase in the energy conversion efficiency of hydrodynamic power generation via spin currents July 3rd, 2020

SUTD developed a simple method to print planar microstructures of polysiloxane: The new method, embedded ink writing (EIW), enables direct writing of polysiloxane which helps in the fabrication of microfluidic devices, flexible wearables, and soft actuators May 29th, 2020

Nanofabrication

SUWA: A hyperstable artificial protein that does not denature in high temperatures above 100°C February 28th, 2020

Theorem explains why quantities such as heat and power can fluctuate in microscopic system: Brazilian researchers participate in theoretical study that could have practical applications in nanoscale machine optimization November 26th, 2019

Large scale integrated circuits produced in printing press: All-printed large-scale integrated circuits based on organic electrochemical transistors November 15th, 2019

CCNY physicists score double hit in LED research September 27th, 2019

Govt.-Legislation/Regulation/Funding/Policy

Physicists find misaligned carbon sheets yield unparalleled properties July 31st, 2020

Scientists discover new class of semiconducting entropy-stabilized materials July 31st, 2020

Nanoreactor strategy generates superior supported bimetallic catalysts July 31st, 2020

Study: Mapping crystal shapes could fast-track 2D materials: Experts call for global effort to clear hurdles to mass production July 27th, 2020

Possible Futures

Physicists find misaligned carbon sheets yield unparalleled properties July 31st, 2020

Way, shape and form: Synthesis conditions define the nanostructure of manganese dioxide July 31st, 2020

New printing process advances 3D capabilities: Technology aims to improve quality of products used in business, industry and at home July 31st, 2020

Scientists discover new class of semiconducting entropy-stabilized materials July 31st, 2020

Nanomedicine

Izon Science receives $10.5M investment from Bolton Equities: Christchurch-headquartered nanotech company secures investment to accelerate global growth; appoints top board chairman and directors July 28th, 2020

Arrowhead Pharmaceuticals Hosts Key Opinion Leader Webinar on ARO-ENaC for Treatment of Cystic Fibrosis July 28th, 2020

Silver-plated gold nanostars detect early cancer biomarkers: New optical sensing platform can detect genomic cancer biomarkers directly in patient tissues July 24th, 2020

HORIBA Medical and CEA-Leti Strengthen Their Partnership to Develop Tomorrow’s Diagnostics at the Point of Care July 21st, 2020

Nanoelectronics

Oriented hexagonal boron nitride foster new type of information carrier May 22nd, 2020

A new strategy to create 2D magnetic order April 10th, 2020

Double-walled nanotubes have electro-optical advantages :Rice University calculations show they could be highly useful for solar panels March 27th, 2020

A Carbon Nanotube Microprocessor Mature Enough to Say Hello: Three new breakthroughs make commercial nanotube processors possible March 2nd, 2020

Discoveries

When Dirac meets frustrated magnetism August 3rd, 2020

Way, shape and form: Synthesis conditions define the nanostructure of manganese dioxide July 31st, 2020

New printing process advances 3D capabilities: Technology aims to improve quality of products used in business, industry and at home July 31st, 2020

TU Graz researchers synthesize nanoparticles tailored for special applications July 31st, 2020

Announcements

When Dirac meets frustrated magnetism August 3rd, 2020

New printing process advances 3D capabilities: Technology aims to improve quality of products used in business, industry and at home July 31st, 2020

TU Graz researchers synthesize nanoparticles tailored for special applications July 31st, 2020

Scientists discover new class of semiconducting entropy-stabilized materials July 31st, 2020

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

When Dirac meets frustrated magnetism August 3rd, 2020

Way, shape and form: Synthesis conditions define the nanostructure of manganese dioxide July 31st, 2020

New printing process advances 3D capabilities: Technology aims to improve quality of products used in business, industry and at home July 31st, 2020

TU Graz researchers synthesize nanoparticles tailored for special applications July 31st, 2020

Grants/Sponsored Research/Awards/Scholarships/Gifts/Contests/Honors/Records

Study: Mapping crystal shapes could fast-track 2D materials: Experts call for global effort to clear hurdles to mass production July 27th, 2020

'Blinking" crystals may convert CO2 into fuels: Unusual nanoparticles could benefit the quest to build a quantum computer July 17th, 2020

Membrane technology could cut emissions and energy use in oil refining July 17th, 2020

Purifying water with the help of wood, bacteria and the sun July 10th, 2020

Photonics/Optics/Lasers

Scientists discover new class of semiconducting entropy-stabilized materials July 31st, 2020

Brazilian researchers develop an optical fiber made of gel derived from marine algae: Edible, biocompatible and biodegradable, these fibers have potential for various medical applications. The results are described in the journal Scientific Reports. July 24th, 2020

Manipulating non-magnetic atoms in a chromium halide enables tuning of magnetic properties: New approach creates synthetic layered magnets with unprecedented level of control over their magnetic properties July 24th, 2020

Photochromic bismuth complexes show great promise for optical memory elements July 24th, 2020

Research partnerships

Discovery of disordered nanolayers in intermetallic alloys: Resolving alloys' strength-ductility trade-off and thermal instability July 24th, 2020

Russian scientists identified energy storage mechanism of sodium-ion battery anode July 24th, 2020

HORIBA Medical and CEA-Leti Strengthen Their Partnership to Develop Tomorrow’s Diagnostics at the Point of Care July 21st, 2020

'Blinking" crystals may convert CO2 into fuels: Unusual nanoparticles could benefit the quest to build a quantum computer July 17th, 2020

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project