Biomedical subjects

E Slot

Publications and source records attributed to E Slot.

At least 19 recordsLinked to original sources

PubMed2006

In-chain tunneling through charge-density-wave nanoconstrictions and break junctions.

We have fabricated longitudinal nanoconstrictions in the charge-density wave conductor (CDW) NbSe3 using a focused ion beam and using a mechanically controlled break-junction technique. Conductance peaks are observed below the TP1=145 K and TP2=59 K CDW transitions, which correspond closely with previous values of the full CDW gaps 2Delta1 and 2Delta2 obtained from photoemission. These results can be explained by assuming CDW-CDW tunneling in the presence of an energy gap corrugation epsilon2 comparable to Delta2, which eliminates expected peaks at +/-|Delta1+Delta2|. The nanometer length scales our experiments imply indicate that an alternative explanation based on tunneling through back-to-back CDW-normal-conductor junctions is unlikely.

Journal Article↗

PubMed2004

One-dimensional conduction in charge-density-wave nanowires.

We report a systematic study of the transport properties of coupled one-dimensional metallic chains as a function of the number of parallel chains. When the number of parallel chains is less than 2000, the transport properties show power-law behavior on temperature and voltage, characteristic for one-dimensional systems.

Journal Article↗

PubMed2001

Negative resistance and local charge-density-wave dynamics.

Charge-density-wave (CDW) dynamics is studied on a submicron length scale in NbSe(3) and o-TaS(3). Regions of negative absolute resistance are observed in the CDW sliding regime at sufficiently low temperatures. The origin of the negative resistance is attributed to the different forces that the deformed CDW and quasiparticles feel: the force on the CDW is merely caused by a difference of the electric potentials, while the quasiparticle current is governed by a difference of the electrochemical potentials.

Journal Article↗

PubMed1980

Cytogenetics of carcinoma of the endometrium. I. The study on ploidy.

98 patients suffering from carcinoma of the endometrium were cytogenetically examined with positive results in 31 cases. The majority of positive cytogenetic examinations of tumors showed hypodiploid stemlines with most frequently appearing modal number 44 chromosomes. Polyploid stemline was observed in 9 and in 2 cases. In the group of 20 well-differentiated carcinomas of the endometrium, 17 tumors hypodiploid and out of 9 poorly-differentiated carcinomas, 7 exhibited stemlines in the polyploid region. It is presumed that cytogenetic development of carcinoma of he endometrium leads from a diploid cell to a hypodiploid one and is terminated by the outgrowth of polyploid cell clones.

Adult↗

PubMed1979