Express.js res.render dot name file

How can I use dot named file on res.render() in express.js? For instance,

There is template file named view.sample.ejs , I want to render it

app.get('/sample', function(req, res){
    res.render('view.sample');
})

The result is,

Error: Cannot find module 'sample'

How can I use dots?

(plus)

I want to name follow mvc model, like

sample.model.js
sample.controller.js
sample.view.ejs
sample.view.update.ejs ...

No problem js file, but render ejs file I couldn't.