Enhancement of superconductivity by the small size effect in In nanoparticles

Design and characterization of antitumor drug paclitaxel-loaded chitosan nanoparticles by W/O emulsions

“…Due to the target property to specific tissue and drug controllable release [20], also the general properties of nano materials, such as surface effect [21], small size effect [22], quantum size effect [23], CS nanoparticles have been widely studied for the drug delivery [24] and gene carrier [25]. Up to now, CS nanoparticles were generally prepared by ionic crosslinking method, self-assembled method and emulsification-crosslinking method.…”

Possible origins of the low-temperature anomaly in CeRu2

“…An X-ray absorption spectroscopy study with limit resolution might shed light on this issue. Second, the anomaly comes from CeRu 2 nano-clusters embedded in the bulk, originated from the disruption of lattice periodicity which have higher H c2 [4]. Hence the T * is a superconducting transition temperature of the …”

Effect of screening current induced pair breaking on magnetization of superconducting lead nanoparticles

“…Studying various phenomena in nano-scale materials and in particular superconducting particles [1][2][3][4] and nano-wires [5,6] of dimensions much smaller or comparable to the superconducting penetration depth k and coherence length n is of current interest. According to the Anderson criterion [7], Cooper pairing is possible as long as the separation of the electronic levels d (%1/N(0)V where N(0) is the density of states at the Fermi surface and V is the volume of the particle) at the Fermi surface in the normal state is smaller than the superconducting energy gap D. In lead and other elemental superconductors, the critical particle size r c below which this criterion breaks down is approximately an order of magnitude smaller than the coherence length n. It is indeed experimentally confirmed that the critical temperature T c of nanoparticles of lead (Pb) remains unaffected down to about 5-10 nm of size, while n % 83 nm [8].…”