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Ultro-thin benzocyclobutene（BCB）bonding process has been proposed as a solution of InGaAs/Si optoelectronic heterogeneous integration. Here, we present a process of InGaAs PIN photodetector bonding onto silicon photonic chip, an ultra-thin bonding layer below 400nm is applied. Silicon photonic chip was fabricated by CMOS compatible process. In order to importing and exporting the light, a focal grating coupler was designed and fabricated, and fiber-to-chip efficiency was 37.7%. InGaAs PIN photodetector responsivity was 0.95A/W which taped out on 3 inch standard InP process. The result presented that the responsivity deterioration coefficient was below 1dB, and the coupling efficiency from Si waveguide to InGaAs photodetector was 41.8%.

We propose and experimentally demonstrate a silicon based ultra-compact and low loss higher order mode bandpass filter (HMF), which was inversely designed by a direct-binary search topology optimization algorithm. The proposed HMF is a directional coupler with optimally positioned etched circular air holes in the coupling region which footprint is only 1.8 × 3 μm2. The experimental results show that the HMF has low insertion loss of

Functional electrical stimulation (FES) to patients early after stroke has been proved to improve walking ability. The effects on abilities in activities of daily living (ADL) are not clear. OBJECTIVE: To investigate the effectiveness of FES in improving lower limb function and ability in ADL of early stroke patients. METHODS: Thirty-seven stroke patients were randomly allocated to standard rehabilitation (SR) group (n = 18), and FES group with FES and SR (n = 19). SR included 60 minutes each for physiotherapy and occupational therapy. FES was delivered for 30 min to induce ankle dorsiflexion and eversion. Treatments were 5 days per week for 3 weeks. Evaluations including the composite spasticity scale (CSS), lower-extremity subscale of Fugl-Myer Assessment (FMA), postural assessment scale for stroke patients (PASS), Berg Balance Scale (BBS), and modified Barthel Index (MBI) assessed before treatment, after 2 and 3 week treatment respectively. RESULTS: After 2 week treatment, FES group showed a significant reduction of CSS and improvements of FMA, MBI and PASS. After 3 week treatment, FES group showed a further reduction of CSS and also improvement of FMA, MBI and BBS as well. CONCLUSIONS: FES on the paretic lower limbs early after stroke improved the mobility and ability in ADL.

To observe the clinical efficacy on cognitive impairment after traumatic brain injury (TBD treated with acupuncture and cognitive training.Sixty patients were randomized into an observation group and a control group, 30 cases in each one, and 5 cases of them were dropped out due to the earlier discharge. Finally, there were 28 cases in the observation group and 27 cases in the control group. In the control group, the cognitive training and conventional treatment were applied. In the observation group, on the basis of the treatment as the control group, acupuncture was applied to Baihui (GV 20), Fengchi (GB 20), Geshu (BL 17) and Fenglong (ST 40), once a day, for 4 weeks totally. The mini-mental state examination (MMSE) and Montreal cognitive assessment (MoCA) were adopted to evaluate the cognitive function in the patients of post-TBI cognitive impairment.(1) After treatment, the total score in MMSE and the score of each item were increased significantly as compared with those before treatment in the two groups (all P0. 05). Except for the score of immediate recall, the score in MMSE and the score of each of the other items were increased significantly in the observation group as compared with those in the control group after treatment (all P0. 05). (2)After treatment, the total score in MoCA and the score of each item were increased significantly as compared with those before treatment in the two groups (all P. 05). Except for the score of nomenclature item, the total score in MoCA and the score of each of the other items were increased significantly in the observation group as compared with those in the control group after treatment (all P0. 05).Both the simple cognitive training and the combined therapy of acupuncture and cognitive training improve MMSE and MoCA scores and relieve the cognitive impairment induced by TBI. But the combined therapy achieves the much better efficacy.