Plan development hybrid" approach

As a final note, we would like to mention that the development of SIESTA is certainly an ongoing task, and new capabilities are being implemented or will be in the future. Developments which are already available in a prehmi-nary stage, and which will be included shortly in the public distribution of SIESTA, include accelerated relaxations and dynamics techniques [316, 317], hybrid quantum mechanics-molecular mechanics schemes [309-311], implementations of time dependent DFT [266, 318], electronic transport properties at the nanoscale [289], and the determination of transition states [319]. In the longer term, there are plans to implement methods based on exact and Hartree-Fock exchange (including hybrid XC functionals), GW approaches for the accurate determination of electronic excitations, and the calculations of free energies from molecular dynamics simulations. 

Also molded are unreinforced or RP to metal hybrids. Plastic-metal hybrids are replacing all-steel structures in automotive front end modules at an accelerated rate. Technical approaches to hybrids are multiplying as more resin suppliers develop alternatives to the overmolding method first established by Bayer. Tier One automotive part suppliers, while tight-lipped on their plans, are also working on proprietary hybrid concepts. 

---