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Highly Reproducible and Sensitive SERS Substrates with Ag Inter-Nanoparticle Gaps of 5 nm Fabricated by Ultrathin Aluminum Mask Technique.
Publication Type: Academic Journal
Source(s): ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2015 Jun 24; Vol. 7 (24), pp. 13322-8. Date of Electronic Publication: 2015 Jun 09.
Abstract: Applicable surface enhanced Raman scattering (SERS) active substrates require high enhancement factor (EF), excellent spatial reproducibility, and low-cost fabrication method on a large area. Although several SERS substrates with high EF and relative s...
Aggregation of gold nanoframes reduces, rather than enhances, SERS efficiency due to the trade-off of the inter- and intraparticle plasmonic fields.
Publication Type: Academic Journal
Source(s): Nano letters [Nano Lett] 2009 Aug; Vol. 9 (8), pp. 3025-31.
Abstract: It is usually observed and understood that aggregation of silver and gold solid nanoparticles gives rise to enhanced SERS spectra due to the increased plasmon field between the particles. In the present work, we observed that the increase of aggregatio...
Carbon Nanotube Inter- and Intramolecular Logic Gates
Publication Type: Periodical
Source(s): Nano Letters; September 12, 2001, Vol. 1 Issue: 9 p453-456, 4p
Abstract: Single wall carbon nanotubes (SWCNTs) have been used as the active channels of field effect transistors (FET). The next development step involves the integration of CNTFETs to form logic gates; the basic units of computers. For this we need to have bot...
Pressure Dependence of Intra- and Interlayer Excitons in 2H-MoS2Bilayers
Publication Type: Periodical
Source(s): Nano Letters; October 2023, Vol. 23 Issue: 19 p8947-8952, 6p
Abstract: The optical and electronic properties of multilayer transition metal dichalcogenides differ significantly from their monolayer counterparts due to interlayer interactions. The separation of individual layers can be tuned in a controlled way by applying...
Quantum Hall Effect Measurement of Spin–Orbit Coupling Strengths in Ultraclean Bilayer Graphene/WSe2Heterostructures
Publication Type: Periodical
Source(s): Nano Letters; October 2019, Vol. 19 Issue: 10 p7028-7034, 7p
Abstract: We study proximity-induced spin–orbit coupling (SOC) in bilayer graphene/few-layer WSe2heterostructure devices. Contact mode atomic force microscopy (AFM) cleaning yields ultraclean interfaces and high-mobility devices. In a perpendicular magnetic fiel...
Unconventional Defects in a Quasi-One-Dimensional KMn6Bi5
Publication Type: Periodical
Source(s): Nano Letters; October 2019, Vol. 19 Issue: 10 p7476-7486, 11p
Abstract: Quasi-one-dimensional (Q1D) structures comprising a compact array of indefinitely long 1D nanowires (NWs) are scarce, especially in a bulk device-scale showing metallic and semiconducting behaviors along different axes. Unlike plentiful observations of...
Competition between Depletion Effects and Coupling in the Plasmon Modulation of Doped Metal Oxide Nanocrystals
Publication Type: Periodical
Source(s): Nano Letters; March 2019, Vol. 19 Issue: 3 p2012-2019, 8p
Abstract: Degenerately doped semiconductor nanocrystals (NCs) exhibit strong light–matter interactions due to localized surface plasmon resonance (LSPR) in the near- to mid-infrared region. Besides being readily tuned through dopant concentration introduced duri...
Tracking Ultrafast Change of Multiterahertz Broadband Response Functions in a Photoexcited Dirac Semimetal Cd3As2Thin Film
Publication Type: Periodical
Source(s): Nano Letters; March 2022, Vol. 22 Issue: 6 p2358-2364, 7p
Abstract: The electromagnetic response of Dirac semimetals in the infrared and terahertz frequency ranges is attracting growing interest for potential applications in optoelectronics and nonlinear optics. The interplay between the free-carrier response and inter...
Assembling Inorganic Nanocrystal Gels
Publication Type: Periodical
Source(s): Nano Letters; February 2022, Vol. 22 Issue: 4 p1457-1466, 10p
Abstract: Inorganic nanocrystal gels retain distinct properties of individual nanocrystals while offering tunable, network-structure-dependent characteristics. We review different mechanisms for assembling gels from colloidal nanocrystals including (1) controlle...
Ring-in-a-Triangle Nanoframes: Integrating with Intra- and Interhotspots for Highly Amplified Near-Field Focusing
Publication Type: Periodical
Source(s): Nano Letters; February 2022, Vol. 22 Issue: 4 p1734-1740, 7p
Abstract: The development of a stepwise synthetic strategy for Au ring-in-a-triangle nanoframes with a high degree of structural solidity is essential to the advancement of highly amplified near-field focusing. This strategy leads to the formation of an inscribe...