InGaAsP photonic crystal slot nanobeam waveguides for refractive index sensing

Results are presented on the use of InGaAsP photonic crystal nanobeam slot waveguides for refractive index sensing. These sensors are read remote-optically through photoluminescence, which is generated by built-in InGaAs quantum dots. The nanobeams are designed to maximize the electromagnetic field intensity in the slot region, which resulted in record-high sensitivities in the order of 700 nm/RIU (refractive index unit). A cavity, created by locally deflecting the two beams towards each other through overetching, is shown to improve the sensitivity by about 20%

Crystal structure of methyl (6-(2-fluorobenzoyl)-5-chloro-2-benzoxazolinon-3-yl)-acetate, C17H11CIFNO5

C17H11CIFNO5, monoclinic, P12(1)/cl (no. 14), a = 7.489(5) angstrom, b = 18.367(5) angstrom, c = 11.752(5) angstrom, beta = 94.222(5)degrees. V = 1612.1 angstrom(3), Z = 4, R-gt(F) = 0.032, wR(ref)(F-2) = 0.083, T = 293 K

The role of radiotherapy in local control of nonextremity Ewing sarcomas

WOS: 000377541800009PubMed ID: 26917407Purpose: To evaluate the results of radiotherapy and the prognostic factors affecting local control in nonextremity Ewing sarcomas. Methods: Between 1995 and 2011, 44 patients with nonextremity Ewing sarcomas were treated with radiotherapy. Tumor localizations were pelvis in 23, spine in 13, thoracic region in 5, and cranium in 3 patients. Tumor size was >= 8 cm in 56.8% of patients. Distant metastases were present in 19 of the patients at the time of diagnosis (43.1%). All patients were treated with 12 weeks of neoadjuvant chemotherapy followed by surgery and radiotherapy (45-54 Gy) or radiotherapy alone (54-64.8 Gy). Radiotherapy was applied due to microscopic residue (R1) in 5 patients after the operation and macroscopic tumor in 39 patients (macroscopic residue [R2] and nonresectable tumor). Results: Median follow-up was 49 months (range 9-195). Local failures developed in 7 patients (15.9%) and local control at 5 years was 81.4%. Local recurrence was detected in 6 patients (6/38) who did not have residual tumor after RT. Progression was detected in 1 patient (1/6) who had residual tumor. All those patients with local failure experienced further distant metastases. Possible prognostic factors such as age ( 17), tumor localization, tumor volume ( 8 cm), and M status at diagnosis (0 vs 1) were not related to local control. Conclusions: Radiotherapy, either alone or adjuvant to surgery, provides local control in 80% of nonextremity Ewing sarcomas and plays an important role in treatment

Lithographic and optical tuning of InGaAsP membrane photonic crystal nanocavities with embedded InAs quantum dots

Hexagonal symmetry InGaAsP membrane type cavities with embedded InAs quantum dots as active emitters were investigated by room temperature photoluminescence experiments at wavelengths near 1.50 μm. Cavities consisting of simple defects of just removing

Tuning of narrow-bandwidth photonic crystal devices etched in InGaAsP planar waveguides by Liquid Crystal infiltration

Photonic crystal (PC) devices in the InP/InGaAsP/InP planar waveguide system exhibiting narrow bandwidth features were investigated for use as ultrasmall and tunable building blocks for photonic integrated circuits at the telecom wavelength of 1.55 μm.