The on-substrate fabrication of a bio-conjugated Au nanoring (NRI) solution with the localized surface plasmon (LSP) resonance wavelength in the 1200-1300 nm range is demonstrated. Also, the effects of photothermal therapy through LSP resonance-induced absorption enhancement are illustrated by applying the bio-conjugated Au NRIs to human liver cancer cells and illuminating the cells with a laser of 1315 nm in wavelength. The Au NRI fabrication is based on the techniques of nano-imprint lithography and metal secondary sputtering. The procedure for on-substrate surface modification of Au NRIs leads to a high production yield of bio-conjugated NRIs. The threshold levels of the local laser intensity for injuring cancer cells based on the LSP resonances of Au NRIs of two different samples are determined.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1088/0957-4484/24/6/065102 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Lignin alkali regulated interfacial polymerization towards ultra-selective and highly permeable nanofiltration membrane.
Nat Commun
January 2025
School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China.
Thin-film composite polyamide (TFC PA) membranes hold promise for energy-efficient liquid separation, but achieving high permeance and precise separation membrane via a facile approach that is compatible with present manufacturing line remains a great challenge. Herein, we demonstrate the use of lignin alkali (LA) derived from waste of paper pulp as an aqueous phase additive to regulate interfacial polymerization (IP) process for achieving high performance nanofiltration (NF) membrane. Various characterizations and molecular dynamics simulations revealed that LA can promote the diffusion and partition of aqueous phase monomer piperazine (PIP) molecules into organic phase and their uniform dispersion on substrate, accelerating the IP reaction and promoting greater interfacial instabilities, thus endowing formation of TFC NF membrane with an ultrathin, highly cross-linked, and crumpled PA layer.
View Article and Find Full Text PDFFacile On-Substrate Fabrication of Silver Coordination Polymer Nanowires for Sustainable and Efficient Water Disinfection.
ACS Appl Mater Interfaces
December 2024
Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
Silver, as the oldest antibacterial material, has been almost replaced by other alternatives for its insufficient activity or potential side-effects on the ecosystem due to the over-release of Ag ions (Ag). Herein, a facile and general strategy is developed to on-substrate fabricate silver coordination polymer nanowire arrays (Ag CPN) by simply immersing Ag-containing substrates into cationic surfactant solution at room temperature. Such a Ag CPN not only provides high-surface-area nano-biointerfaces for destroying microorganisms via physicomechanical interactions but also acts as a safe Ag reservoir, steadily releasing Ag at a relatively high but safe level (∼40 ppb, but lower than the safe level of 100 ppb).
View Article and Find Full Text PDFImplantation of web-like cellulose nanofibrils on electrospun fibrous membrane for boosting filtration performance.
Int J Biol Macromol
December 2024
Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China. Electronic address:
Air pollution such as particulate matter is always a serious threat to public health, thus many disposable and degradable air filters were designed to deal with this severe challenge avoiding the secondary pollution after discarding. Herein, inspired by the natural spider web structure, a hierarchical porous composite fibrous membrane containing web-like cellulose nanofibrils (CNF) was developed. The implanted porous CNF membranes with web-like among the inter-fiber voids of electrospun poly(ethylene-co-viny alcohol) fibrous membrane were realized via a layer-by-layer (LBL) method followed by an elevated-temperature drying, which exhibit a smaller diameter with one or two orders of magnitude reduction comparing with the substrate fibers.
View Article and Find Full Text PDFRecrystallization-Enabled Fabrication of Single-Crystalline Gold Flakes for Plasmonic Applications.
ACS Appl Mater Interfaces
December 2024
State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou 310027, China.
Gold films with a single-crystalline structure and an ultrasmooth surface are highly desired for fabricating plasmonic nanostructures with low loss. Here, we report a recrystallization-based approach to synthesize on-substrate single-crystalline gold flakes with high efficiency. By dissolving a multicrystalline gold film with tetraoctylammonium bromide at ∼140 °C and then recrystallizing at ∼160 °C for 2 h, high-density (>1000 pieces per cm) gold flakes can be obtained directly on a substrate, which have a thin thickness concentrated around 30 nm and a maximum lateral size up to 0.
View Article and Find Full Text PDFOn-Substrate Preparation of a Poly(triphenylamino azomethine) for Electrochromic Devices.
Polymers (Basel)
August 2024
Laboratoire de Caractérisation Photophysique des Matériaux Conjugués, Département de Chimie, Université de Montréal, Montreal, QC H3C 3J7, Canada.
An electroactive polyazomethine was prepared directly on a transparent electrode by the polycondensation of bis(triphenylamine) dialdehyde and its complementary methoxytriphenylamine diamine. The method of coating the electrode for preparing electrochromic layers could be upscaled to prepare working devices larger than standard test devices. The film prepared by thermally annealing the complementary monomers was both electroactive and switched its color with an applied potential.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!