Controlled assembly and single electron charging of monolayer protected Au144 clusters: an electrochemistry and scanning tunneling spectroscopy study.

Single gold particles may serve as room temperature single electron memory units because of their size dependent electronic level spacing. Here, we present a proof-of-concept study by electrochemically controlled scanning probe experiments performed on tailor-made Au particles of narrow dispersity. In particular, the charge transport characteristics through chemically synthesized hexane-1-thiol and 4-pyridylbenzene-1-thiol mixed monolayer protected Au(144) clusters (MPCs) by differential pulse voltammetry (DPV) and electrochemical scanning tunneling spectroscopy (EC-STS) are reported.

STM vizualization of thiol-containing peptide dendrimers on Au(111).

Peptide dendrimers assembled by solid-phase peptide synthesis using a branching diamino acid at every 2(nd) or 3(rd) position provide readily accessible synthetic model systems for proteins and enzymes. They adopt a globular shape by topology rather than by folding. Peptide dendrimers of 2(nd) and 3(rd) generation functionalized with a cysteine or cystine residue in the core were adsorbed on Au(111) surface and imaged by STM at air, under UHV, or in solution.

Diffuse layer properties of thiol-modified gold electrodes probed by direct force measurements.

The diffuse layer properties of modified gold electrodes under potentiostatic control have been determined by direct force measurements. These measurements have been performed with a colloidal probe consisting of a silica particle attached to the cantilever of an atomic force microscope. The gold electrodes were modified by self-assembled monolayers (SAMs) of different thickness.

Structures of surfactant films: a scanning force microscopy study.

The alveolar lining layer is thought to consist of a continuous duplex layer, i.e., an aqueous hypophase covered by a thin surfactant film which is a monolayer with dipalmitoyl-phosphatidylcholine (DPPC) as its most important component.

[Effectiveness of local treatment using a PVP-iodine compound for retained placenta in cows].

106 cattle with retained placenta were treated either with Vetisept-bolus or Tetran-bolus (controls) after an attempt to remove fetal membranes. Uterine involution judged by rectal palpation on the 28th day was the same in both groups, but more treatments were necessary for cows of the experimental group. Cows treated with Vetisept came in heat nine days earlier than controls (p < 0.

Dose-finding study with bopindolol in arterial hypertension.

Bopindolol is a new beta blocker with a long duration of action which exerts antihypertensive effects at very low dosage. The aim of this study was to define the optimal dosage of bopindolol in outpatients with mild to moderate hypertension and to compare it to atenolol in term of tolerance and efficacy, both administered once daily. Forty physicians (the Swiss Cooperative Study Group) participated as investigators in this study.

[Curative-pedagogic aspects of mental deficiency].

Curative pedagogy is nothing else but a theory on education and teaching of the mentally handicapped. The author presents the following seven thesis: 1. Mental deficiency is not a definite state.