Tag Archives: nanoparticles

How to design a plasmonic sensor more sensitive to the environment?

Noble metal nanoparticles (NPs) such as Au NPs and Ag NPs support localized surface plasmon resonances (LSPRs), which are the light-coupled coherent oscillations of free electrons confined within the NPs. The LSPRs, which are characterized by the

The passion of electrons for naked “green gold” in water to develop new nanotechnology applications

Electrons are negatively charged particles that are critical to the chemical reactions. Chemical reactions in living organisms, including humans, involve the movement and transfer of electrons. Indeed, the source of energy for life involves the transportation of

Transformative nanomaterial synthesis using biological conditions

One area of promise and concern when using nanomaterials is their potentially high level of reactivity. This comes from the massively increased surface area of the material when it is segmented into much smaller pieces. A copper

A study to establishing the structural integrity of core−shell nanoparticles

Lanthanide – doped core – shell nanoparticles, such as NaYF4:Yb/Er@NaYF4, have attracted increasing attention for applications in photonics, photovoltaics, and biological imaging and therapeutics. When compared to conventional nanoparticles that suffer from extensive and uncontrollable dopant −

The “luminous” gold nanorod: direct observation of electron transfer

Photoluminescence (PL), in which photon is emitted after the absorption of another photon, has been important for many technologies. The first observation of visible PL of gold dates back to 1969, when Mooradian studied bulk gold and

The new photoelectrochemical aptamer biosensor

The photoelectrochemical (PEC) biosensing is a new and promising analytical technique to detect biomolecules with high sensitivity. As core unit of PEC biosensor, photoelectrode materials play an irreplaceable role for its detecting performance. Among them, titanium dioxide