Eight-channel SiNx microring-resonator based photonic biosensor for label-free fluid analysis in the optical C-band.

A lab-on-a-chip multichannel sensing platform for biomedical analysis based on optical silicon nitride (SiNx) microring-resonators (MRR) was established. The resonators were surface functionalized and finally combined with a microfluidic chamber for validation using an avidin-biotin ligand-binding assay. The results with a limit of detection (LOD) of 2.

Photonic-enabled beam steering at 300 GHz using a photodiode-based antenna array and a polymer-based optical phased array.

For wireless networks beyond 5G, directivity and reconfigurability of antennas are highly relevant. Therefore, we propose a linear antenna array based on photodiodes operating at 300 GHz, and an optical phased array based on polymer waveguides to orchestrate the antennas. Due to its low thermal conductivity and high thermo-optical coefficient, the polymer chip enables highly efficient and crosstalk-free phase shifting.

Fiber Coupled Transceiver with 6.5 THz Bandwidth for Terahertz Time-Domain Spectroscopy in Reflection Geometry.

We present a fiber coupled transceiver head for terahertz (THz) time-domain reflection measurements. The monolithically integrated transceiver chip is based on iron (Fe) doped InGaAs (InGaAs:Fe) grown by molecular beam epitaxy. Due to its ultrashort electron lifetime and high mobility, InGaAs:Fe is very well suited as both THz emitter and receiver.

Wireless Data Transmission at Terahertz Carrier Waves Generated from a Hybrid InP-Polymer Dual Tunable DBR Laser Photonic Integrated Circuit.

We report for the first time the successful wavelength stabilization of two hybrid integrated InP/Polymer DBR lasers through optical injection. The two InP/Polymer DBR lasers are integrated into a photonic integrated circuit, providing an ideal source for millimeter and Terahertz wave generation by optical heterodyne technique. These lasers offer the widest tuning range of the carrier wave demonstrated to date up into the Terahertz range, about 20 nm (2.

Switchable dual-polarization external cavity tunable laser.

An external cavity laser is demonstrated based on the hybrid integration of an InP-based gain element, a half-wave plate, and thermally drivable polymer waveguide circuits. The laser has one oscillation region but two outputs for TE and TM emissions. The central wavelength can be tuned 20 nm at 20 mW heater electrical power.

Primary meningeal Burkitt-type lymphoma presenting as the first clinical manifestation of acquired immunodeficiency syndrome.

The purpose of this study is to report a rare case of primary meningeal high grade Burkitt-type lymphoma presenting as the first clinical manifestation of acquired immunodeficiency syndrome. A 38-year-old Caucasian man, with a negative past medical history, sought treatment after experiencing global headache for five days. CT-Scan revealed a right front-temporo-parietal hyperdense subdural expansive mass.

Cardiac pacing in balloon aortic valvuloplasty.

Objective: To evaluate the rapid ventricular pacing in balloon aortic valvuloplasty to achieve balloon stability.

Material And Methods: From September 2004 to July 2005, a prospective protocol was carried out: ten patients with aortic valve stenosis were treated with this method. Patient's age ranged from 3 to 16 years with mean age of 10.

[Balloon stabilization by means of cardiac stimulation during aortic valvuloplasty].

Objective: To evaluate rapid ventricular pacing in balloon aortic valvuloplasty, an initial strategy to achieve balloon stability.

Material And Methods: From September to December 2004, a prospective protocol was started: three male consecutive patients with aortic valve stenosis were treated by this strategy. Age of the patients were 13, 6 and 5 years old.

[Scimitar syndrome associated to pulmonary atresia with interventricular communication. First reported case].

We present the case of a 15 months-old male with Scimitar Syndrome associated with ventricular septal defect and pulmonary atresia. The diagnosis was made by cardiac catheterization and angiography and was confirmed by the necropsy. Clinical and surgical considerations of this exceptional association were made.

[Congenital percutaneous aortic valvuloplasty in 70 subjects with congenital aortic stenosis, mid-term results].

Objective: To evaluate mid-term results with Percutaneous aortic valvuloplasty (PAV).

Material And Methods: Records of 70 patients treated with percutaneous aortic valvuloplasty with at least 6 months follow-up were reviewed.

Results: The 70 patients with PAV aged 3 months to 36 years, mean 10.

Tricuspid atresia associated with common arterial trunk and 22q11 chromosome deletion.

The case of a four-months old male with coexistent tricuspid atresia and common arterial trunk is presented. The diagnosis was made by cardiac catheterization and selective angiocardiography. Clinical considerations are discussed and the review of the available literature reveals this patient to be the tenth case reported of this very unusual association of cardiovascular defects, and the first with positive deletion of the 22q11 chromosome.

Transcatheter closure of secundum atrial septal defects and fenestrated Fontan using the Amplatzer septal occluder. Initial prospective study.

Objective: To evaluate the safety and efficacy of transcatheter closure of secundum atrial septal defects and fenestrated Fontan with the Amplatzer septal occluder.

Methods: Fifteen consecutive patients, with a significant interatrial communications, were considered for the procedure; four patients with defects that were too large or with deficient margins were excluded after initial transesophageal echocardiography.

Results: Eleven procedures were performed in 11 patients (10 atrial septal defects and 1 fenestrated Fontan) aged 9 to 38 years, mean 17.

Intraluminal aortoplasty vs. surgical aortic resection in congenital aortic coarctation. A clinical random study in pediatric patients.

Background: Our objective was to compare results of two therapeutic modalities to treat congenital aortic coarctation: intraluminal aortoplasty without endoluminal stent installation (patients in group A) vs. surgical aortic resection (patients in group B). Trans-coarctation gradient pressure was evaluated prior to and immediately after treatment.

Percutaneous aortic valvoplasty in congenital aortic valvar stenosis.

Objective: To evaluate immediate and midterm results with percutaneous aortic valvoplasty.

Material And Methods: We reviewed the records of 141 patients undergoing percutaneous aortic valvopasty over a period of 13 years.

Results: The patients were aged from 2 months to 40 years, with a mean of 10.

Types of obstructions in double-chambered right ventricle: mid-term results.

Background: The double-chambered right ventricle (DCRV) is increasingly recognized as a distinct obstruction entity. The nature of the obstruction is not well defined.

Methods: Patients with DCRV were prospectively studied during the last 4 years according to the following criteria: 1) pressure gradient by echo Doppler and cardiac catheterization within the right ventricle; 2) angiographic demonstration, and 3) surgical confirmation.