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Objective: To present a novel surgical approach to performing bulbar urethroplasty and to assess its initial outcomes and safety.Materials and Methods: From January 2016 to March 2019, anastomotic urethroplasty without full mobilization and dissection of corpus spongiosum dorsal semicircumference was performed in 8 males with bulbar strictures by a single surgeon. Patients were given uroflowmetry, urethrography, and International Index of Erectile Function (IIEF) questionnaires at their 3- and 12- month follow-up visits postoperatively.Results: Mean stricture length was 2.3 cm (±0.59 cm) and mean surgery time was 131 minutes. No early or late postoperative complications were observed. Median maximum flow rate (Qmax) assessed 3 months after surgery was 22.35 mL/sec (±6.4 mL/sec). There were no significant changes in median IIEF score postoperatively (preoperative IIEF = 18.4 vs postoperative IIEF = 19.6; P >.05). During patients' 1-year observation period, no signs of constriction in the anastomosis were revealed with urethrography. One of the limitations of this technique is a necessity of more precise corpus spongiosum preparation to ensure perioperative hemostasis and good visualization. This outcome may, however, require additional time and increased blood loss during a surgeon's learning curve of the procedure.Conclusion: The initial experience of this minimally invasive urethroplasty technique showed high efficiency and no early stricture recurrences. However, the clinical significance of additional preservation of innervation and blood supply, the potential to further optimize this technique's functional outcomes, and applicability of this technique in patients with spongiofibrosis requires further investigation. Our results make it possible to consider this technique as a possible alternative to classic anastomotic urethroplasty. [ABSTRACT FROM AUTHOR]

• SPP launch is enhanced by a spherical metal (au) or all-dielectric (Si) nanoantenna. • Spectral position of peak efficiency is related to Mie resonances of nanoantennas. • The enhancement originates from electric dipole and electric quadrupole modes. • The peak value of the energy conversion efficiency reaches up to 25%. In order to design a viable nanoplasmonic device it is essential to be able to control the excitation of plasmon polaritons using an external voltage bias. To achieve this we can employ the phenomenon of electron inelastic tunneling followed by photon excitation and a subsequent launch of the plasmon polariton. Unfortunately, this process suffers from low efficiency. In this paper, we propose the use of spherical Si and Au nanoantennas to increase the energy conversion from photon to plasmon. We show that size-governed Mie resonances of nanoantenna determine the spectral position of peak efficiency. The size of the nanoantenna also determines the efficiency value, which can reach up to 25%. This is an order of magnitude higher compared to the case without nanoantenna. An analysis of thermal stability proves that both types of nanoantennas can operate under high current rates at room temperature. [ABSTRACT FROM AUTHOR]