A Lio

A Nitzan

AJ White

B Kim

B Pellegrini

D Scaini

D Xiang

FN Hooge

G-Y Liu

GE Poirier

GK Ramachandran

H Li

H Song

JG Kushmerick

JL Wilbur

L Patrone

MG Sung

MM Pérez-Madrigal

MM Thuo

N Clement

NJ Tao

O Adak

R Ochs

RL McCreery

SV Aradhya

T Kim

T Sawaguchi

TA Su

VA Sydoruk

WY Wang

Y Kim

Z Huang

ZJ Donhauser

Scientific Reports

AbstractWe report a noise mapping strategy for the reliable identification and analysis of noise sources in molecular wire junctions. Here, different molecular wires were patterned on a gold substrate, and the current-noise map on the pattern was measured and analyzed, enabling the quantitative study of noise sources in the patterned molecular wires. The frequency spectra of the noise from the molecular wire junctions exhibited characteristic 1/f2 behavior, which was used to identify the electrical signals from molecular wires. This method was applied to analyze the molecular junctions comprising various thiol molecules on a gold substrate, revealing that the noise in the junctions mainly came from the fluctuation of the thiol bonds. Furthermore, we quantitatively compared the frequencies of such bond fluctuations in different molecular wire junctions and identified molecular wires with lower electrical noise, which can provide critical information for designing low-noise molecular electronic devices. Our method provides valuable insights regarding noise phenomena in molecular wires and can be a powerful tool for the development of molecular electronic devices.</jats:p

Direct mapping of electrical noise sources in molecular wire-based devices

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