scholarly journals Video‐based actigraphy is an effective contact‐free method of assessing sleep in preterm infants

2020 ◽  
Author(s):  
Xi Long ◽  
Javier Espina ◽  
Renee A. Otte ◽  
Wenjin Wang ◽  
Ronald M. Aarts ◽  
...  
Keyword(s):  
Preterm Infants ◽  
Effective Contact ◽  
Contact Free

scholarly journals Long-range transport of 2D excitons in dynamic acoustic lattice

2021 ◽  
Author(s):  
Ruoming Peng ◽  
Adina Ripin ◽  
Yusen Ye ◽  
Jiayi Zhu ◽  
Changming Wu ◽  
...  
Keyword(s):  
Acoustic Waves ◽  
Diffusion Length ◽  
Surface Acoustic Waves ◽  
Optical Excitation ◽  
Acoustic Power ◽  
2D Semiconductors ◽  
Effective Contact ◽  
Dynamic Potential ◽  
Range Transport ◽  
Contact Free

Abstract Excitons are elementary optical excitation in semiconductors. The ability to manipulate and transport these quasiparticles would enable excitonic circuits and devices for quantum photonic technologies. Recently, interlayer excitons in 2D semiconductors have emerged as a promising candidate for engineering excitonic devices due to long lifetime, large exciton binding energy, and gate tunability. However, the charge-neutral nature of the excitons leads to a weak response to the in-plane electric field and thus inhibits transport beyond the diffusion length. Here, we demonstrate the directional transport of interlayer excitons in bilayer WSe2 driven by the dynamic potential lattice induced by surface acoustic waves (SAW). We show that at 100 K, the SAW-driven excitonic transport is activated above a threshold acoustic power and reaches a distance at least ten times longer than the diffusion length, only limited by the device size. Temperature-dependent measurement reveals the transition from the diffusion-limited regime at low temperature to an acoustic field-driven regime at elevated temperature. Our work shows that acoustic waves are an effective, contact-free means to control exciton dynamics and transport, promising for realizing 2D materials-based excitonic devices such as exciton transistors, switches, and transducers.

Auditory Arousal in Preterm Infants

1984 ◽  
Vol 11 ◽  
pp. 3-9 ◽  
Author(s):  
Kay Lynn Copriviza ◽  
Cynthia Gayle Lima
Keyword(s):  
Preterm Infants

Spinal anaesthesia and meningitis in former preterm infants: cause-effect?

1999 ◽  
Vol 9 (3) ◽  
pp. 262-264 ◽  
Author(s):  
G Luz ◽  
H Buchele ◽  
P Innerhofer ◽  
H Maurer
Keyword(s):  
Preterm Infants ◽  
Spinal Anaesthesia

Developmental outcome and types of chronic-stage EEG abnormalities in preterm infants

2002 ◽  
Vol 44 (11) ◽  
Author(s):  
Akihisa Okumura ◽  
Fumio Hayakawa ◽  
Toru Kato ◽  
Kuniyoshi Kuno ◽  
Kazuyoshi Watanabe
Keyword(s):  
Preterm Infants ◽  
Developmental Outcome ◽  
Chronic Stage ◽  
Eeg Abnormalities

Visual development in preterm infants

2005 ◽  
Vol 47 (4) ◽  
pp. 276-280 ◽  
Author(s):  
Ashima Madan ◽  
James E Jan ◽  
William V Good
Keyword(s):  
Preterm Infants ◽  
Visual Development
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