Boosting the nonlinear conversion rate in nanoscale is pivotal for practical applications such as highly sensitive biosensors, extreme ultra-violate light sources, and frequency combs. Here, we theoretically study the enhancement of second-harmonic generation (SHG) in a plasmonic trimer assisted by breathing modes. The geometry of the trimer is fine-tuned to produce strong plasmonic resonances at both the fundamental and SH wavelengths to boost SHG intensity. Moreover, it is found that breathing modes show remarkable ability to augment SHG by increasing the enhancement area. In particular, these breathing modes ensure a substantial spatial mode overlap at the fundamental and SH wavelengths, resulting in further promotion of the SHG conversation rate. We envision that our findings could enable applications in nanoscale frequency converters with high efficiency.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1364/OL.44.003813 | DOI Listing |
Importance: Classification of persons with long COVID (LC) or post-COVID-19 condition must encompass the complexity and heterogeneity of the condition. Iterative refinement of the classification index for research is needed to incorporate newly available data as the field rapidly evolves.
Objective: To update the 2023 research index for adults with LC using additional participant data from the Researching COVID to Enhance Recovery (RECOVER-Adult) study and an expanded symptom list based on input from patient communities.
Pediatr Int
December 2024
Department of Pediatrics, Korea University Anam Hospital, Seoul, South Korea.
Background: Evidence to show that neurally adjusted ventilatory assist (NAVA) improves clinical outcomes is lacking. We aimed to analyze whether NAVA improves respiratory outcomes in preterm infants who require invasive mechanical ventilation.
Methods: A retrospective cohort study was conducted in 122 very low birthweight infants who required invasive mechanical ventilation for more than 24 h at one tertiary neonatal intensive care unit in Korea from January 2016 to June 2023.
ERJ Open Res
November 2024
Anaesthesia and Intensive Care Unit, Department of Medical and Surgical Sciences, "Magna Graecia" University, Catanzaro, Italy.
Introduction: High-frequency percussive ventilation (HFPV) is a ventilation mode characterised by high-frequency breaths. This study investigated the impact of HFPV on gas exchange and clinical outcomes in acute respiratory failure (ARF) patients during spontaneous breathing, noninvasive ventilation (NIV) and invasive mechanical ventilation (iMV).
Methods: This systematic review included randomised and nonrandomised studies up to August 2023.
Diagnostics (Basel)
November 2024
Faculty of Engineering, North-West University, Potchefstroom 2531, South Africa.
Background: Mechanical ventilation is a critical but resource-intensive treatment. Automated tools are common in screening diagnostics, whereas real-time, continuous trend analysis in mechanical ventilation remains rare. Current techniques for monitoring lung conditions are often invasive, lack accuracy, and fail to isolate respiratory resistance-making them impractical for continuous monitoring and diagnosis.
View Article and Find Full Text PDFNiger J Clin Pract
November 2024
Department of Intensive Care Unit, Basaksehir Cam and Sakura Training and Research City Hospital, Istanbul, Turkey.
Background: INTELLIVENT-Adaptive Support Ventilation (I-ASV; C6; Hamilton Medical; Bonaduz, Switzerland) is a closed-loop ventilation mode that continuously controls the patient's ventilation and oxygenation. It sets the minute ventilation, PEEP, and oxygen levels based on the targets set by the clinician and on physiological input from the patient.
Aim: The aim was to compare I-ASV and PSV modes regarding weaning in intensive care patients.
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!